CN110696384A - Production process of PP plate automobile roof - Google Patents
Production process of PP plate automobile roof Download PDFInfo
- Publication number
- CN110696384A CN110696384A CN201910999702.8A CN201910999702A CN110696384A CN 110696384 A CN110696384 A CN 110696384A CN 201910999702 A CN201910999702 A CN 201910999702A CN 110696384 A CN110696384 A CN 110696384A
- Authority
- CN
- China
- Prior art keywords
- adhesive film
- production process
- cutting
- base material
- automobile roof
- 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.)
- Pending
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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
- 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
- B29C69/001—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 a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
- B29C43/146—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps for making multilayered articles
-
- 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
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- 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
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
- B29L2031/3011—Roof linings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The invention provides a production process of a PP sheet material automobile roof, which comprises the following steps: 1) baking the base material: placing the laid base material into an automatic feeding mechanism for baking and heating, wherein the base material comprises an upper-layer adhesive film, a main material, a lower-layer adhesive film and non-woven fabric from top to bottom, and the main material is prepared by mixing PP fibers, glass fiber fibers and a foaming agent; 2) and (3) pressing and forming: pressing the material heated in the step 1) and the fabric in a cooling mould into a semi-finished product by adopting a hydraulic forming machine; 3) cutting with a water jet cutter: and positioning the semi-finished product obtained by compression molding, and cutting by a water jet to obtain the automobile roof. The production process of the PP plate automobile roof solves the performance indexes of sound absorption, sound insulation, environmental protection, light weight and the like of the automobile roof assembly; in the material processing process, a steel die is adopted for hot material cold press molding, the process is stable, the operation safety and accuracy are ensured, and the operation efficiency is improved; the product will not wrinkle.
Description
Technical Field
The invention belongs to the processing technology of automotive interior parts, and particularly relates to a production process of a PP plate automotive ceiling.
Background
The automobile roof is arranged at the top of the automobile carriage and plays roles in heat insulation, sound insulation and sound absorption. In the era of pursuing high performance, environmental protection, energy saving, light weight and individuation, the interior trim of the automobile is the same as the appearance of the automobile, and becomes an important factor for people to select and purchase the automobile. Therefore, the demand for automotive interior parts is also increasing. In the prior art, performance indexes of high sound absorption, high sound insulation, low gram weight, strong heat insulation, environmental protection and the like of the automobile roof become bottlenecks, and the development of the automobile roof is restricted. The existing automobile roof mainly has the following problems: 1. the sound absorption index can not meet the requirement; 2. the sound insulation index can not meet the requirement; 3. poor thermal insulation; 4. the product material is not environment-friendly, the production process is complicated, and the production efficiency is low; 5. the product weight is big, is unfavorable for whole car lightweight, energy-conservation.
Disclosure of Invention
The invention aims to provide a production process of a PP plate automobile roof, which aims to solve the problems that the automobile roof in the prior art does not reach the standard in sound absorption, sound insulation and heat insulation performance, is heavy in product weight and is low in production efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
a production process of a PP plate automobile ceiling comprises the following steps:
1) baking the base material: placing the laid base material into an automatic feeding mechanism for baking and heating, wherein the base material comprises an upper-layer adhesive film, a main material, a lower-layer adhesive film and non-woven fabric from top to bottom, and the main material is prepared by mixing PP fibers, glass fiber fibers and a foaming agent; when the temperature is heated, setting the temperature of an upper oven: 260-290 ℃, setting the following oven temperature: the temperature is between 250 and 300 ℃, and the drying time is between 60 and 70 seconds;
2) and (3) pressing and forming: pressing the material heated in the step 1) and the fabric in a cooling mould into a semi-finished product by adopting a hydraulic forming machine; when in compression molding, the molding pressure is 16MPa to 17MPa, and the molding pressure maintaining time is 30s to 35 s;
3) cutting with a water jet cutter: positioning the semi-finished product obtained by compression molding, and cutting by a water jet to obtain the automobile roof;
4) assembling accessories: mounting a supporting iron piece on the back of the roof by using an assembly tool;
5) and (4) checking: after inspection, boxing and warehousing.
Particularly, the upper adhesive film in the step 1) adopts a single-layer PP adhesive film.
Particularly, the lower adhesive film in the step 1) comprises a PE adhesive film, a PA adhesive film and a PE adhesive film which are arranged from top to bottom.
In particular, the gram weight of the base material in the step 1) is 680g/m2～715g/m2(ii) a The thickness is 1.5 mm-2.5 mm.
Particularly, the water pressure for cutting in the step 3) is 40000 psi-50000 psi; the cutting pressure is 0.6MPa to 0.8 MPa.
Compared with the prior art, the production process of the PP plate automobile ceiling has the beneficial effects that the performance indexes of the automobile ceiling assembly, such as sound absorption, sound insulation, environmental protection, light weight and the like, are solved; the weight of the automobile roof is greatly reduced, and the requirement of the light weight design of the whole automobile is met; the composite material is selected to reduce the cost of raw materials and is more selective; in the material processing process, a steel die is adopted for hot material cold press molding, the process is stable, the operation safety and accuracy are ensured, and the operation efficiency is improved; the product does not wrinkle; no semi-finished product is accumulated on the way, and the manufacturing cost is saved.
Detailed Description
For the purpose of facilitating an understanding of the present invention, the present invention will now be described by way of examples. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example one
In this embodiment, a production process of a PP plate automobile roof, the specification of the automobile roof (small skylight) is as follows: l2050 xW 1260 xH 193, the production process comprises the following steps:
step one, drying the base material: placing the laid raw materials into an automatic feeding mechanism for baking and heating, wherein the base material comprises an upper-layer glue film, a main material, a lower-layer glue film and a non-woven fabric from top to bottom, the main material is prepared by mixing PP fibers, glass fibers and a foaming agent, the upper-layer glue film is a single-layer PP glue film, the lower-layer glue film comprises a PE glue film, a PA glue film and a PE glue film from top to bottom, and the gram weight of the base material is 680g/m2The thickness is 1.5 mm; when the temperature is heated, setting the temperature of an upper oven: 260 ℃, setting the lower oven temperature: drying at 300 ℃ for 60 s;
step two, compression molding: pressing the materials and the fabric in a cooling mould into a semi-finished product by adopting a 200-ton hydraulic forming machine; when in compression molding, the molding pressure is 16MPa, and the molding pressure maintaining time is 30 s;
step three, water jet cutting: performing water-jet cutting on the molded semi-finished product on a double-knife robot cutting system according to a specified cutting program to obtain a required automobile roof; the cutting water pressure is controlled at 40000psi, and the cutting air pressure is controlled at 0.6 MPa; after cutting, removing excess materials, and checking the cutting size by using a checking fixture;
step four, assembling accessories: mounting a supporting iron piece on the back of the roof by using an assembly tool;
step five, checking: during inspection, the surface is required to be smooth without damage, breakage, corrugation, scorching and other defects; and (4) accurately boxing the checked automobile roof according to the packaging technical standard, and warehousing the automobile roof according to 5 sets/boxes.
Example two
In this embodiment, a production process of a PP plate automobile roof, the specification of the automobile roof (small skylight) is as follows: l2050 xW 1260 xH 193, the production process comprises the following steps:
step one, drying the base material: placing the laid raw materials into an automatic feeding mechanism for baking and heating, wherein the base material comprises an upper-layer glue film, a main material, a lower-layer glue film and non-woven fabric from top to bottom, the main material is prepared by mixing PP fibers, glass fibers and a foaming agent, the upper-layer glue film adopts a single-layer PP glue film, the lower-layer glue film comprises a PE glue film, a PA glue film and a PE glue film from top to bottom, and the gram weight of the base material is 697g/m2The thickness is 2.0 mm; when the temperature is heated, setting the temperature of an upper oven: 275 ℃, set the lower oven temperature: the temperature is 275 ℃, and the drying time is 65 s;
step two, compression molding: pressing the materials and the fabric in a cooling mould into a semi-finished product by adopting a 200-ton hydraulic forming machine; when in compression molding, the molding pressure is 16MPa, and the molding pressure maintaining time is 32 s;
step three, water jet cutting: performing water-jet cutting on the molded semi-finished product on a double-knife robot cutting system according to a specified cutting program to obtain a required automobile roof; the cutting water pressure is controlled at 45000psi, and the cutting air pressure is controlled at 0.7 MPa; after cutting, removing excess materials, and checking the cutting size by using a checking fixture;
step four, assembling accessories: mounting a supporting iron piece on the back of the roof by using an assembly tool;
step five, checking: during inspection, the surface is required to be smooth without damage, breakage, corrugation, scorching and other defects; and (4) accurately boxing the checked automobile roof according to the packaging technical standard, and warehousing the automobile roof according to 5 sets/boxes.
EXAMPLE III
In this embodiment, a production process of a PP plate automobile roof, the specification of the automobile roof (small skylight) is as follows: l2050 xW 1260 xH 193, the production process comprises the following steps:
step one, drying the base material: placing the laid raw materials into an automatic feeding mechanism for baking and heating, wherein the base material comprises an upper layer adhesive film, a main material, a lower layer adhesive film and non-woven fabric from top to bottom, the main material is prepared by mixing PP fibers, glass fibers and a foaming agent, the upper layer adhesive film adopts a single-layer PP adhesive film, the lower layer adhesive film comprises a PE adhesive film, a PA adhesive film and a PE adhesive film from top to bottom, and the gram weight of the base material is 715g/m2The thickness is 2.5 mm; when the temperature is heated, setting the temperature of an upper oven: 290 ℃, set the lower oven temperature: drying at 300 ℃ for 70 s;
step two, compression molding: pressing the materials and the fabric in a cooling mould into a semi-finished product by adopting a 200-ton hydraulic forming machine; when in compression molding, the molding pressure is 17MPa, and the molding pressure maintaining time is 35 s;
step three, water jet cutting: performing water-jet cutting on the molded semi-finished product on a double-knife robot cutting system according to a specified cutting program to obtain a required automobile roof; the cutting water pressure is controlled at 50000psi, and the cutting air pressure is controlled at 0.8 MPa; after cutting, removing excess materials, and checking the cutting size by using a checking fixture;
step four, assembling accessories: mounting a supporting iron piece on the back of the roof by using an assembly tool;
step five, checking: during inspection, the surface is required to be smooth without damage, breakage, corrugation, scorching and other defects; and (4) accurately boxing the checked automobile roof according to the packaging technical standard, and warehousing the automobile roof according to 5 sets/boxes.
The applicant states that the present invention is illustrated by the above examples to show the detailed process equipment and process flow of the present invention, but the present invention is not limited to the above detailed process equipment and process flow, i.e. it does not mean that the present invention must rely on the above detailed process equipment and process flow to be implemented. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (5)
1. A production process of a PP plate automobile ceiling is characterized by comprising the following steps:
1) baking the base material: placing the laid base material into an automatic feeding mechanism for baking and heating, wherein the base material comprises an upper-layer adhesive film, a main material, a lower-layer adhesive film and non-woven fabric from top to bottom, and the main material is prepared by mixing PP fibers, glass fiber fibers and a foaming agent; when the temperature is heated, setting the temperature of an upper oven: 260-290 ℃, setting the following oven temperature: the temperature is between 250 and 300 ℃, and the drying time is between 60 and 70 seconds;
2) and (3) pressing and forming: pressing the material heated in the step 1) and the fabric in a cooling mould into a semi-finished product by adopting a hydraulic forming machine; when in compression molding, the molding pressure is 16MPa to 17MPa, and the molding pressure maintaining time is 30s to 35 s;
3) cutting with a water jet cutter: positioning the semi-finished product obtained by compression molding, and cutting by a water jet to obtain the automobile roof;
4) assembling accessories: mounting a supporting iron piece on the back of the roof by using an assembly tool;
5) and (4) checking: after inspection, boxing and warehousing.
2. The production process of the PP sheet material automobile ceiling as claimed in claim 1, wherein the upper glue film in the step 1) is a single-layer PP glue film.
3. The production process of the PP sheet material automobile ceiling as claimed in claim 1, wherein the lower adhesive film in the step 1) comprises a PE adhesive film, a PA adhesive film and a PE adhesive film which are arranged from top to bottom.
4. The production process of the PP sheet material automobile ceiling as claimed in claim 1, wherein the gram weight of the base material in the step 1) is 680g/m2～715g/m2(ii) a The thickness is 1.5 mm-2.5 mm.
5. The production process of the PP plate automobile ceiling as claimed in claim 1, wherein the cutting water pressure in the step 3) is 40000 psi-50000 psi; the cutting pressure is 0.6MPa to 0.8 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910999702.8A CN110696384A (en) | 2019-10-21 | 2019-10-21 | Production process of PP plate automobile roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910999702.8A CN110696384A (en) | 2019-10-21 | 2019-10-21 | Production process of PP plate automobile roof |
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| Publication Number | Publication Date |
|---|---|
| CN110696384A true CN110696384A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910999702.8A Pending CN110696384A (en) | 2019-10-21 | 2019-10-21 | Production process of PP plate automobile roof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112477357A (en) * | 2020-11-05 | 2021-03-12 | 如皋市伟业机械配件有限公司 | Manufacturing method of automobile interior trim trunk cover |
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| CN101654081A (en) * | 2009-09-07 | 2010-02-24 | 无锡吉兴汽车声学部件科技有限公司 | Production process for manufacturing roof by polypropylene and glass fiber plate |
| CN201484319U (en) * | 2009-06-15 | 2010-05-26 | 湖南长丰汽车内装饰有限公司 | Automobile roof inner decorative plate |
| JP2013071712A (en) * | 2011-09-29 | 2013-04-22 | Hayashi Engineering Inc | Molded article and molding method thereof |
| CN104369775A (en) * | 2014-10-16 | 2015-02-25 | 烟台正海汽车内饰件有限公司 | PP fiberglass panel car roof and production method thereof |
| CN107891638A (en) * | 2017-10-12 | 2018-04-10 | 宜兴市泰宇汽车零部件有限公司 | A kind of novel environment friendly lightweight PP composite board preparation technologies |
-
2019
- 2019-10-21 CN CN201910999702.8A patent/CN110696384A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332791A (en) * | 2008-06-23 | 2008-12-31 | 刘明春 | Production method of vehicle top using wet treatment |
| CN201484319U (en) * | 2009-06-15 | 2010-05-26 | 湖南长丰汽车内装饰有限公司 | Automobile roof inner decorative plate |
| CN101654081A (en) * | 2009-09-07 | 2010-02-24 | 无锡吉兴汽车声学部件科技有限公司 | Production process for manufacturing roof by polypropylene and glass fiber plate |
| JP2013071712A (en) * | 2011-09-29 | 2013-04-22 | Hayashi Engineering Inc | Molded article and molding method thereof |
| CN104369775A (en) * | 2014-10-16 | 2015-02-25 | 烟台正海汽车内饰件有限公司 | PP fiberglass panel car roof and production method thereof |
| CN107891638A (en) * | 2017-10-12 | 2018-04-10 | 宜兴市泰宇汽车零部件有限公司 | A kind of novel environment friendly lightweight PP composite board preparation technologies |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112477357A (en) * | 2020-11-05 | 2021-03-12 | 如皋市伟业机械配件有限公司 | Manufacturing method of automobile interior trim trunk cover |
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Application publication date: 20200117 |