CN112318805A - Process method for molding polyester material automotive interior by adopting low-temperature compression molding - Google Patents
Process method for molding polyester material automotive interior by adopting low-temperature compression molding Download PDFInfo
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- CN112318805A CN112318805A CN202010928993.4A CN202010928993A CN112318805A CN 112318805 A CN112318805 A CN 112318805A CN 202010928993 A CN202010928993 A CN 202010928993A CN 112318805 A CN112318805 A CN 112318805A
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- 239000000463 material Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 79
- 229920000728 polyester Polymers 0.000 title claims abstract description 73
- 230000008569 process Effects 0.000 title claims abstract description 37
- 238000000748 compression moulding Methods 0.000 title claims abstract description 24
- 238000000465 moulding Methods 0.000 title claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 238000002791 soaking Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 32
- 239000012535 impurity Substances 0.000 claims description 12
- 238000005498 polishing Methods 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 8
- 238000005034 decoration Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 238000007605 air drying Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000002950 deficient Effects 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims 1
- 238000007790 scraping Methods 0.000 claims 1
- 239000004576 sand Substances 0.000 abstract description 4
- 239000012778 molding material Substances 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/20—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of plastics
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/60—Releasing, lubricating or separating agents
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/70—Maintenance
- B29C33/72—Cleaning
-
- 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
-
- 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
- B29C43/32—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
-
- 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
- B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The application discloses a process method for molding a polyester material automotive interior by low-temperature compression molding, which comprises the following steps: cleaning the mold, soaking and cleaning the mold subjected to low-temperature compression molding; preheating the mould, and carrying out preheating treatment on the mould; coating a release agent; preparing materials; loading, namely putting clean polyester materials and other raw materials into a mold; closing the die and forming, closing the upper die and the lower die, and pressing the product; demolding to obtain a finished product of the polyester material automobile interior trim; deburring to polish the finished product, so that the surface of the product is smooth and tidy; and (6) surface finishing. The process method for preparing the automotive trim can improve the quality of the polyester material automotive trim and reduce the generation of bubbles, sand holes, layering and the like of finished products of the polyester material automotive trim.
Description
Technical Field
The application relates to a process method for automobile interior decoration, in particular to a process method for adopting low-temperature compression molding forming polyester material for automobile interior decoration.
Background
The automobile interior mainly refers to an automobile product used for refitting the interior of an automobile, and relates to the square surface of the interior of the automobile, an automobile interior system is an important component of an automobile body, and the design workload of the interior system accounts for more than 60% of the design workload of the automobile shape, far exceeds the appearance of the automobile, and is one of the most important parts of the automobile body. Each vehicle plant usually has a large vehicle interior team to perform a lot of engineering work related to interior, and broadly speaking, interior is not only interior. The investigation shows that the owner of the vehicle in a certain period especially gives the details of the internal space.
At present, because the traditional manufacturing mode has certain limitation, the quality of the polyester material automotive interior is poor, and the use requirement of an automobile is difficult to meet. Therefore, a process method for molding the polyester material by low-temperature compression molding for the automotive interior is provided for solving the problems.
Disclosure of Invention
A process method for molding a polyester material automotive interior by low-temperature compression molding comprises the following steps:
s1, cleaning the die, soaking and cleaning the die formed by low-temperature compression molding, cleaning sundries such as resin, oil stains and the like remained in the die, drying the die, and then placing the die for 0.5-1.5 hours at room temperature to cool the die and restore the die to the room temperature;
s2, preheating the die, and carrying out preheating treatment on the die to enable the die to reach a certain temperature;
s3, coating a release agent, and coating a certain amount of release agent in the mold forming groove to prevent the product and the mold from being stuck together and difficult to release;
s4, preparing materials, namely cleaning the raw materials such as the polyester material and the like, removing impurities such as dust, oil stains and the like on the raw materials such as the polyester material and the like, and then air-drying the raw materials such as the polyester material and the like at room temperature for 0.3-1.2 hours;
s5, charging, namely putting the clean raw materials such as the polyester material obtained in the step S4 into a mold;
s6, carrying out die assembly forming, closing the upper die and the lower die, pressing the product, and carrying out pressure maintaining solidification on the product, wherein the pressure maintaining time is 0.1-0.35 hour;
s7, demolding, namely demolding the mold in the step S6 to obtain a finished product of the polyester material automobile interior trim;
s8, deburring, namely cleaning the residual materials on the surface of the finished product taken out in the step S7 by using a cleaning brush, polishing the finished product, and deburring to enable the surface of the product to be smooth and tidy;
and S9, surface finishing, namely performing surface finishing on the product obtained in the S8, namely performing treatment such as oil stain resistance on the product to obtain a finished product of the polyester material automobile interior decoration with the functions of oil stain resistance and the like.
Further, in the step S1, the mould is placed into an ether solution to be soaked for 10-24 hours, the concentration of the ether solution is 13% -20%, and oil stains and the like in a mould forming groove are removed.
In step S1, the mold is washed with flowing clean water after being soaked in the ether solution, so as to remove impurities such as ether solution and dust remaining on the surface of the mold.
Further, the release agent in S3 is a zinc stearate release agent, and the release agent needs to be uniformly brushed when brushing.
Further, in the step S5, it is necessary to estimate the amount of the charged molded article according to the sizes of the molded articles, so as to ensure the accuracy of the geometric size of the molded article, and to prevent the defective molded article due to insufficient raw material or the waste of the raw material due to the large amount of raw material.
Further, the charge amount is estimated by comparing the densities of the molded product and the corresponding product by using a density comparison method, and the charge amount of the molded product can be estimated by knowing the weight of the corresponding product.
Further, in the step S6, when the mold is closed, the upper mold descends faster, but when the mold comes into contact with the molding material, the speed is slowed down.
Further, in the step S7, the mold is depressurized and vented to remove residual volatile substances, low-molecular compounds released by the curing reaction, and air introduced into the molding material.
Further, the cleaning brush in S8 is a copper brush, which scrapes off impurities remaining on the surface of the finished product of the polyester material automotive interior trim, and blows the surface of the finished product clean with compressed air.
Further, in S8, the finished product of the polyester material automobile interior is polished to remove burrs and burrs at the edge of the finished product of the polyester material automobile interior during molding, and attention is paid to the polishing method and direction during polishing.
The beneficial effect of this application is: the application provides a process method for molding a polyester material automotive interior by low-temperature compression molding.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic flow chart of a process according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The first embodiment is as follows:
referring to fig. 1, a process for manufacturing an automotive interior trim by using a low-temperature compression molding polyester material includes the following steps:
s1, cleaning the die, soaking and cleaning the die formed by low-temperature compression molding, cleaning sundries such as resin, oil stains and the like remained in the die, drying the die, and then placing the die for 0.5-1.5 hours at room temperature to cool the die and restore the die to the room temperature;
s2, preheating the die, and carrying out preheating treatment on the die to enable the die to reach a certain temperature;
s3, coating a release agent, and coating a certain amount of release agent in the mold forming groove to prevent the product and the mold from being stuck together and difficult to release;
s4, preparing materials, namely cleaning the raw materials such as the polyester material and the like, removing impurities such as dust, oil stains and the like on the raw materials such as the polyester material and the like, and then air-drying the raw materials such as the polyester material and the like at room temperature for 0.3-1.2 hours;
s5, charging, namely putting the clean raw materials such as the polyester material obtained in the step S4 into a mold;
s6, carrying out die assembly forming, closing the upper die and the lower die, pressing the product, and carrying out pressure maintaining solidification on the product, wherein the pressure maintaining time is 0.1-0.35 hour;
s7, demolding, namely demolding the mold in the step S6 to obtain a finished product of the polyester material automobile interior trim;
s8, deburring, namely cleaning the residual materials on the surface of the finished product taken out in the step S7 by using a cleaning brush, polishing the finished product, and deburring to enable the surface of the product to be smooth and tidy;
and S9, surface finishing, namely performing surface finishing on the product obtained in the S8, namely performing treatment such as oil stain resistance on the product to obtain a finished product of the polyester material automobile interior decoration with the functions of oil stain resistance and the like.
Further, in the step S1, the mould is placed into an ether solution to be soaked for 10-24 hours, the concentration of the ether solution is 13% -20%, and oil stains and the like in a mould forming groove are removed.
In step S1, the mold is washed with flowing clean water after being soaked in the ether solution, so as to remove impurities such as ether solution and dust remaining on the surface of the mold.
Further, the release agent in S3 is a zinc stearate release agent, and the release agent needs to be uniformly brushed when brushing.
Further, in the step S5, the charging amount is estimated according to the molded products with different sizes, so as to ensure the accuracy of the geometric size of the molded products, prevent defective products due to insufficient raw materials or waste materials due to excessive raw materials, and uniformly lay the raw materials such as polyester materials during charging.
Further, the charge amount is estimated by comparing the densities of the molded product and the corresponding product by using a density comparison method, and the charge amount of the molded product can be estimated by knowing the weight of the corresponding product.
Further, when the mold is closed in the step S6, the upper mold descends faster, which is beneficial to operation and can improve the mold closing efficiency, but when the upper mold contacts the molding material, the speed is slowed down, which is convenient to fully remove the gas in the mold, reduces the generation of the defects of bubbles and sand holes, and improves the quality of the polyester material automotive interior.
Further, in the step S7, when the mold is removed, the mold is decompressed and exhausted to remove residual volatile matters in the molding material, low molecular compounds released by the curing reaction, and air brought into the molding material, so that the compactness of the polyester material automotive interior product is better, and the phenomena of bubbles, delamination and the like of the polyester material automotive interior product are avoided.
Further, the cleaning brush in S8 is a copper brush, which scrapes off impurities remaining on the surface of the finished product of the polyester material automotive interior trim, and blows the surface of the finished product clean with compressed air.
Further, in S8, the finished product of the polyester material automobile interior is polished to remove burrs and burrs at the edge of the finished product of the polyester material automobile interior during molding, and attention is paid to the polishing method and direction during polishing.
The process method is suitable for preparing small-batch polyester material automobile interior trims.
Example two:
referring to fig. 1, a process for manufacturing an automotive interior trim by using a low-temperature compression molding polyester material includes the following steps:
s1, cleaning the die, soaking and cleaning the die formed by low-temperature compression molding, cleaning sundries such as resin, oil stains and the like remained in the die, drying the die, and then placing the die for 3.5-4.5 hours at room temperature to cool the die and restore the die to the room temperature;
s2, preheating the die, and carrying out preheating treatment on the die to enable the die to reach a certain temperature;
s3, coating a release agent, and coating a certain amount of release agent in the mold forming groove to prevent the product and the mold from being stuck together and difficult to release;
s4, preparing materials, namely cleaning the raw materials such as the polyester material and the like, removing impurities such as dust, oil stains and the like on the raw materials such as the polyester material and the like, and then air-drying the raw materials such as the polyester material and the like at room temperature for 2.5-4.0 hours;
s5, charging, namely putting the clean raw materials such as the polyester material obtained in the step S4 into a mold;
s6, carrying out die assembly forming, closing the upper die and the lower die, pressing the product, and carrying out pressure maintaining solidification on the product for 1-1.5 hours;
s7, demolding, namely demolding the mold in the step S6 to obtain a finished product of the polyester material automobile interior trim;
s8, deburring, namely cleaning the residual materials on the surface of the finished product taken out in the step S7 by using a cleaning brush, polishing the finished product, and deburring to enable the surface of the product to be smooth and tidy;
and S9, performing surface finishing on the product obtained in the step S8, namely performing treatment such as oil stain resistance on the product to obtain a finished product of the polyester material automobile interior decoration with the oil stain resistance function.
Further, in the step S1, the mould is placed into an ether solution to be soaked for 15-33 hours, the concentration of the ether solution is 13% -20%, and oil stains and the like in a mould forming groove are removed.
In step S1, the mold is washed with flowing clean water after being soaked in the ether solution, so as to remove impurities such as ether solution and dust remaining on the surface of the mold.
Further, the release agent in S3 is a zinc stearate release agent, and the release agent needs to be uniformly brushed when brushing.
Further, in the step S5, the charging amount is estimated according to the molded products with different sizes, so as to ensure the accuracy of the geometric size of the molded products, prevent defective products due to insufficient raw materials or waste materials due to excessive raw materials, and uniformly lay the raw materials such as polyester materials during charging.
Further, the charge amount is estimated by comparing the densities of the molded product and the corresponding product by using a density comparison method, and the charge amount of the molded product can be estimated by knowing the weight of the corresponding product.
Further, when the mold is closed in the step S6, the upper mold descends faster, which is beneficial to operation and can improve the mold closing efficiency, but when the upper mold contacts the molding material, the speed is slowed down, which is convenient to fully remove the gas in the mold, reduces the generation of the defects of bubbles and sand holes, and improves the quality of the polyester material automotive interior.
Further, in the step S7, when the mold is removed, the mold is decompressed and exhausted to remove residual volatile matters in the molding material, low molecular compounds released by the curing reaction, and air brought into the molding material, so that the compactness of the polyester material automotive interior product is better, and the phenomena of bubbles, delamination and the like of the polyester material automotive interior product are avoided.
Further, the cleaning brush in S8 is a copper brush, which scrapes off impurities remaining on the surface of the finished product of the polyester material automotive interior trim, and blows the surface of the finished product clean with compressed air.
Further, in S8, the finished product of the polyester material automobile interior is polished to remove burrs and burrs at the edge of the finished product of the polyester material automobile interior during molding, and attention is paid to the polishing method and direction during polishing.
The process method is suitable for preparing the mass polyester material automobile interior trim.
The application has the advantages that:
the process method for preparing the automobile interior trim can improve the quality of the polyester material automobile interior trim, reduce the generation of bubbles, sand holes, layering and the like of finished products of the polyester material automobile interior trim, and is convenient for preparing the polyester material automobile interior trim.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A process method for molding a polyester material automotive interior by low-temperature compression molding is characterized by comprising the following steps: the process method comprises the following steps:
s1, cleaning the die, soaking and cleaning the die formed by low-temperature compression molding, cleaning sundries such as resin, oil stains and the like remained in the die, drying the die, and then placing the die for 0.5-1.5 hours at room temperature to cool the die and restore the die to the room temperature;
s2, preheating the die, and carrying out preheating treatment on the die to enable the die to reach a certain temperature;
s3, coating a release agent, and coating a certain amount of release agent in the mold forming groove to prevent the product and the mold from being stuck together and difficult to release;
s4, preparing materials, namely cleaning the raw materials such as the polyester material and the like, removing impurities such as dust, oil stains and the like on the raw materials such as the polyester material and the like, and then air-drying the raw materials such as the polyester material and the like at room temperature for 0.3-1.2 hours;
s5, charging, namely putting the clean raw materials such as the polyester material obtained in the step S4 into a mold;
s6, carrying out die assembly forming, closing the upper die and the lower die, pressing the product, and carrying out pressure maintaining solidification on the product, wherein the pressure maintaining time is 0.1-0.35 hour;
s7, demolding, namely demolding the mold in the step S6 to obtain a finished product of the polyester material automobile interior trim;
s8, deburring, namely cleaning the residual materials on the surface of the finished product taken out in the step S7 by using a cleaning brush, polishing the finished product, and deburring to enable the surface of the product to be smooth and tidy;
and S9, surface finishing, namely performing surface finishing on the product obtained in the S8, namely performing treatment such as oil stain resistance on the product to obtain a finished product of the polyester material automobile interior decoration with the functions of oil stain resistance and the like.
2. The process method for molding the automotive interior by low-temperature compression molding of the polyester material according to claim 1, wherein the process method comprises the following steps: and in the S1, the mould is placed into an ether solution for soaking for 10-24 hours, the concentration of the ether solution is 13% -20%, and oil stains and the like in a mould forming groove are removed.
3. The process method for molding the automotive interior by low-temperature compression molding of the polyester material as claimed in claim 2, wherein the process method comprises the following steps: in the step S1, the mold is washed with flowing clear water after being soaked in the ether solution, so as to remove the ether solution, dust and other impurities remaining on the surface of the mold.
4. The process method for molding the automotive interior by low-temperature compression molding of the polyester material according to claim 1, wherein the process method comprises the following steps: the release agent in the S3 is zinc stearate release agent, and the release agent needs to be uniformly coated when being coated.
5. The process method for molding the automotive interior by low-temperature compression molding of the polyester material according to claim 1, wherein the process method comprises the following steps: in the step S5, the amount of the charged molded product is estimated according to the sizes of the molded products, so as to ensure the accuracy of the geometric size of the molded product and prevent the defective products due to insufficient raw materials or the waste of materials due to excessive raw materials.
6. The process method for molding the automotive interior by low-temperature compression molding of the polyester material according to claim 5, wherein the process method comprises the following steps: the charge amount is estimated by comparing the densities of the die product and the corresponding product by a density comparison method, and the charge amount of the die-pressed product can be estimated by knowing the weight of the corresponding product.
7. The process method for molding the automotive interior by low-temperature compression molding of the polyester material according to claim 1, wherein the process method comprises the following steps: in the step S6, the upper die moves down faster when the die is closed, but the speed is slowed down when the upper die comes into contact with the die material.
8. The process method for molding the automotive interior by low-temperature compression molding of the polyester material according to claim 1, wherein the process method comprises the following steps: and in the S7 step, when the die is demolded, the die is decompressed and exhausted, and residual volatile matters in the die-pressed material, low-molecular compounds released by the curing reaction and air brought into the die-pressed material are removed.
9. The process method for molding the automotive interior by low-temperature compression molding of the polyester material according to claim 1, wherein the process method comprises the following steps: and the cleaning brush in the S8 is a copper brush, and is used for scraping impurities remained on the surface of the finished product of the polyester material automobile interior trim and blowing the surface of the finished product clean by using compressed air.
10. The process method for molding the automotive interior by low-temperature compression molding of the polyester material according to claim 1, wherein the process method comprises the following steps: in S8, the finished product of the polyester material automobile interior is polished to remove burrs and flashes at the edge of the finished product of the polyester material automobile interior when molding, and attention is paid to the polishing method and direction during polishing.
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