CN112297460A - Engine decoration cover - Google Patents
Engine decoration cover Download PDFInfo
- Publication number
- CN112297460A CN112297460A CN201910687076.9A CN201910687076A CN112297460A CN 112297460 A CN112297460 A CN 112297460A CN 201910687076 A CN201910687076 A CN 201910687076A CN 112297460 A CN112297460 A CN 112297460A
- Authority
- CN
- China
- Prior art keywords
- skin
- polyurethane foaming
- engine
- product
- forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
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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
- B29C44/02—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
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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
- B29C44/60—Measuring, controlling or regulating
-
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/10—Forming by pressure difference, e.g. vacuum
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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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/46—Measuring, controlling or regulating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/11—Thermal or acoustic insulation
- F02B77/13—Acoustic insulation
Abstract
The invention discloses an engine decorative cover, which comprises a surface skin and polyurethane foaming raw materials, wherein the surface skin is heated and then softened and plastic-absorbed to the surface of a mold; then closing the mold, and injecting polyurethane foaming raw materials into the mold through foaming equipment; injecting polyurethane foaming raw materials into the mould and then reacting with the skin for forming; the product is taken out after reaction forming and is placed on a forming tool for cooling and forming, and the selected surface is used as the appearance surface of the product, so that the traditional engine cover surface treatment process is replaced, and the environmental protection requirement is improved; meanwhile, the polyurethane foaming formula is simplified, the product is light, the cost of parts is reduced finally, and benefits are created for the cost and the light weight of the automobile.
Description
Technical Field
The invention relates to the field of automobile accessories, in particular to an engine decorative cover.
Background
An engine decorative cover is generally arranged between the top of an engine and a cabin cover and used for shielding noise emitted by the engine, keeping the cleanliness of the engine and visually shielding the engine to improve the decorative effect in the engine cabin, the traditional engine decorative cover is formed by injection molding of plastic particles through an injection molding machine, soundproof cotton is added to the back of a plastic piece in part, strictly speaking, the engine cover is divided into two parts, namely a polyurethane foam engine cover and a layer of plastic decorative cover covering the polyurethane engine cover, the traditional engine decorative cover is formed by injection molding of PA6 (also called nylon 6) and PA66 materials, then the soundproof cotton is added behind the decorative cover and is welded on the polyurethane engine cover together to form a complete engine cover, but the traditional plastic engine cover has poor sound absorption effect and causes the reduction of the comfort of a cab; and the product has higher weight, needs paint spraying in the manufacturing process, has low qualification rate and high environmental protection treatment cost.
Disclosure of Invention
Aiming at the problems, the invention provides the engine decorative cover, which solves the problem that the comfort of a cab is reduced due to the poor sound absorption effect of the traditional plastic engine cover; and the product has higher weight, needs paint spraying in the manufacturing process, has low qualification rate and high environmental protection treatment cost.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: comprises a skin and a polyurethane foaming raw material, and the specific manufacturing process comprises the following steps: the method comprises the following steps: heating the surface and softening and plastic sucking to the surface of the mold; step two: then closing the mold, and injecting polyurethane foaming raw materials into the mold through foaming equipment; step three: injecting polyurethane foaming raw materials into the mould and then reacting with the skin for forming; step four: and taking out the product after reaction forming, and placing the product on a forming tool for cooling and forming.
Preferably, the surface skin is in a soft stripe structure.
Preferably, the thickness of the skin in the first step is 0.1-0.2 mm.
Preferably, the temperature for heating the skin in the first step is 140-170 ℃.
Preferably, the injection amount of the polyurethane foaming raw material in the second step is 500-1200 g according to different products.
Preferably, the time for the in-mold reaction molding in the third step is 3 minutes.
Preferably, the surface of the skin can be a polymer resin film with grains on the surface.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:
according to the engine decorative cover, the soft skin with the grains is used as the appearance surface of the product, the traditional engine cover surface treatment process is replaced, the environment-friendly requirement is improved, the polyurethane foaming formula is simplified, the light weight of the product is realized, the cost reduction of parts is finally realized, and benefits are created for the automobile cost and the light weight.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic bottom view of the present invention;
FIG. 3 is a schematic diagram of the right-view structure of the present invention;
FIG. 4 is a schematic top view of the present invention;
fig. 5 is a schematic view of the back structure of the present invention.
In the figure: skin-1 and polyurethane foaming raw material-2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The invention provides an engine decorative cover: the surface treatment method comprises a surface skin 1 and a polyurethane foaming raw material 2, wherein the surface skin 1 is heated and then softened and plastic-absorbed to the surface of a mold; then closing the mould, and injecting a polyurethane foaming raw material 2 into the mould through foaming equipment; injecting a polyurethane foaming raw material 2 into the mold, and then reacting with the skin 1 for molding; taking out the product after reaction forming, and placing the product on a shaping tool for cooling and shaping, wherein the specific numerical conditions are shown in the following table:
| thickness of epidermis | Skin warming temperature | Amount of polyurethane foaming material injected | Reaction forming time in mould | |
| Specific numerical values: | 0.1~0.2mm | 140~170℃ | 500g~1200g | 3 minutes |
According to the above table, the specific numerical values in the manufacturing process of the invention can be known, and the surface 1 with the soft strip texture is adopted as the appearance surface of the product, so that the traditional engine cover surface treatment process is replaced, and the environmental protection requirement is improved; meanwhile, the polyurethane foaming formula is simplified, the product is light, the cost of parts is reduced finally, benefits are created for the cost and the light weight of the automobile, and the product percent of pass is greatly improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. An engine trim cover, characterized in that: comprises a skin (1) and a polyurethane foaming raw material (2), and the specific manufacturing process comprises the following steps:
the method comprises the following steps: firstly, heating the surface skin (1) and then softening and blistering the surface skin to the surface of a mould;
step two: then closing the mould, and injecting a polyurethane foaming raw material (2) into the mould through foaming equipment;
step three: injecting a polyurethane foaming raw material (2) into the mold, and then reacting with the skin (1) for molding;
step four: and taking out the product after reaction forming, and placing the product on a forming tool for cooling and forming.
2. An engine trim cover according to claim 1, wherein: the surface skin (1) is in a soft belt line structure.
3. An engine trim cover according to claim 1, wherein: the thickness of the skin (1) in the first step is 0.1-0.2 mm.
4. An engine trim cover according to claim 1, wherein: the temperature for heating the skin (1) in the first step is 140-170 ℃.
5. An engine trim cover according to claim 1, wherein: and the injection amount of the polyurethane foaming raw material (2) in the second step is 500-1200 g according to the gram weight of different products.
6. An engine trim cover according to claim 1, wherein: and the time for reaction forming in the die in the third step is 3 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910687076.9A CN112297460A (en) | 2019-07-29 | 2019-07-29 | Engine decoration cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910687076.9A CN112297460A (en) | 2019-07-29 | 2019-07-29 | Engine decoration cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112297460A true CN112297460A (en) | 2021-02-02 |
Family
ID=74329822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910687076.9A Withdrawn CN112297460A (en) | 2019-07-29 | 2019-07-29 | Engine decoration cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112297460A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1593896A (en) * | 2004-06-25 | 2005-03-16 | 中国重型汽车集团有限公司 | Engine hood processing technology |
| CN106891589A (en) * | 2017-04-17 | 2017-06-27 | 郑州精益达汽车零部件有限公司 | A kind of composite for engine hood of passenger train and preparation method thereof |
-
2019
- 2019-07-29 CN CN201910687076.9A patent/CN112297460A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1593896A (en) * | 2004-06-25 | 2005-03-16 | 中国重型汽车集团有限公司 | Engine hood processing technology |
| CN106891589A (en) * | 2017-04-17 | 2017-06-27 | 郑州精益达汽车零部件有限公司 | A kind of composite for engine hood of passenger train and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210202 |
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| WW01 | Invention patent application withdrawn after publication |