CN110919968A - Forming method of lower inner cavity sealing element of right B column for automobile - Google Patents
Forming method of lower inner cavity sealing element of right B column for automobile Download PDFInfo
- Publication number
- CN110919968A CN110919968A CN201911242724.6A CN201911242724A CN110919968A CN 110919968 A CN110919968 A CN 110919968A CN 201911242724 A CN201911242724 A CN 201911242724A CN 110919968 A CN110919968 A CN 110919968A
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- CN
- China
- Prior art keywords
- raw material
- eva
- hours
- inner cavity
- namely
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- 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.)
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/022—Melting the material to be shaped
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1615—The materials being injected at different moulding stations
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- 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
- B29K2023/08—Copolymers of ethylene
- B29K2023/083—EVA, i.e. ethylene vinyl acetate copolymer
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- 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
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
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- 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
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
- B29L2031/265—Packings, Gaskets
Abstract
The invention provides a method for forming a lower inner cavity sealing element of a right B column for an automobile, which belongs to the field of manufacturing processes of automobile parts and comprises the following steps of preparing materials, namely a raw material PA66 which is black; EVA raw material, yellow; secondly, drying treatment, namely drying the PA66 raw material in the first step in hot air of more than 80 ℃ for 16 hours when the humidity is more than 0.2%; if the PA66 material is exposed for more than 8 hours, drying the material in vacuum for more than 8 hours at 105 ℃; and (3) performing sealed preservation, a third step, heat treatment, a fourth step, casting and molding, a fifth step and cooling, after the fourth step is completed, performing a sixth step when the mold is cooled to below 20 ℃, opening the mold to take a piece, opening the mold to complete the demolding action of the product and the mold, then taking the piece by using a manipulator, and performing inspection in the seventh step. The invention embodies the specific steps and parameters and improves the working efficiency and the product percent of pass.
Description
Technical Field
The invention belongs to the field of manufacturing processes of automobile parts, and particularly relates to a forming method of a right B-pillar lower inner cavity sealing element for an automobile.
Background
With the continuous development of the automobile industry, people pay more and more attention to the comfort level in the automobile while pursuing the power performance of the automobile, wherein the noise in the automobile is high and low during driving, so that people can feel the longest and continuous experience, and meanwhile, the evaluation of the automobile owner on the whole automobile is directly influenced in the aspect.
The A column is arranged between the engine compartment and the cockpit and above the left rear-view mirror and the right rear-view mirror; the B column is arranged between a front seat and a rear seat of the cab, the C column extends from the roof to the bottom of the cab to support the rear windshield, the ABC column not only supports a metal column of the roof of the cab, but also has an important protection effect on members in the cab, and when a vehicle rolls or overturns, the ABC column can effectively avoid the cab from being extruded and deformed, so that the strength of the ABC column is of great significance to the life in the vehicle, the ABC columns of some high-grade vehicles are integrated with the vehicle body including the vehicle frame, and the safety is greatly improved. On the other hand, the ABC column is also a 'necessary path' for some devices, such as part of electrical lines, safety belts (B columns), lighting sound devices, and even airbags can be arranged on the ABC column, and the cavity sealing element in the lower inner cavity of the right B column is easy to deform in the manufacturing process.
Disclosure of Invention
In view of the above, the invention aims to provide a forming method of a right B-pillar lower inner cavity sealing element for an automobile, which has the advantages of clear flow, high output efficiency and high product qualification rate.
In order to achieve the purpose, the technical scheme of the invention is realized as follows: the forming method of the lower inner cavity sealing element of the right B column for the automobile comprises the first step of preparing materials, wherein the materials are PA66 raw materials and are black; the EVA raw material is yellow, the dosage ratio of PA66 to EVA is 3:1, and the PA66 raw material is used for manufacturing;
secondly, drying treatment, namely drying the PA66 raw material in the first step in hot air of more than 80 ℃ for 16 hours when the humidity is more than 0.2%; if the PA66 material is exposed for more than 8 hours, drying the material in vacuum for more than 8 hours at 105 ℃;
sealing and storing the EVA raw material;
thirdly, performing heat treatment, namely respectively heating the PA66 raw material and the EVA raw material in the first step, wherein the heating temperature of the PA66 raw material is 250-280 ℃, heating to a molten state, and performing heat preservation treatment;
step four, casting and molding, namely casting a PA66 raw material, wherein the mold temperature is 80-90 ℃, the injection pressure is 750-1250 bar, the aperture of a sprue is not less than 0.5 t, and t is the thickness of a molded part; casting and cooling the PA66 for 8 minutes, and then casting an EVA raw material;
step five, cooling, and after the step four is finished, carrying out next operation when the mould is cooled to below 20 ℃;
sixthly, opening the die to take the part, opening the die to complete the demoulding action of the product and the die, and then taking the part by adopting a manipulator;
and seventhly, checking.
Further, in the second step, the temperature of the mould is 83-98 ℃, and the injection pressure is 850-1000 bar.
Further, in the sixth step, the manipulator is a six-axis manipulator, and one end of the manipulator, which is far away from the mold, is an AGV rack.
Compared with the prior art, the invention has the advantages and positive effects that: 1. the method has the advantages that specific steps and more detailed parameters are set, the specification is stricter, the influence of human operation factors is reduced, the qualified rate of products is improved, and the working efficiency is improved.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are relative positional relationships, are used merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The following is a detailed description of specific embodiments of the invention.
The invention relates to a method for forming a lower inner cavity sealing element of a right B column for an automobile, which comprises the steps of preparing materials, namely, adopting a raw material of PA66, wherein the raw material is black; the EVA raw material is yellow, the dosage ratio of PA66 to EVA is 3:1, and the PA66 raw material is used for manufacturing;
secondly, drying treatment, namely drying the PA66 raw material in the first step in hot air of more than 80 ℃ for 16 hours when the humidity is more than 0.2%; if the PA66 material is exposed for more than 8 hours, vacuum drying is carried out for more than 8 hours under the condition of 105 ℃, because the PA66 can easily absorb moisture, the drying before processing is particularly noted, if the material is packaged and supplied by waterproof materials, the container is kept closed, the PA66 is the nylon 6 material, and the EVA is ethylene-vinyl acetate copolymer;
sealing and storing the EVA raw material;
thirdly, performing heat treatment, namely respectively heating the PA66 raw material and the EVA raw material in the first step, wherein the heating temperature of the PA66 raw material is 250-280 ℃, heating to a molten state, and performing heat preservation treatment;
step four, casting and molding, namely casting a PA66 raw material, wherein the mold temperature is 80-90 ℃, the injection pressure is 750-1250 bar, the aperture of a sprue is not less than 0.5 t, and t is the thickness of a molded part; after 8 minutes of cooling in the PA66 casting, the EVA material is cast with a gate of smaller size than if a hot runner were used, as the hot runner can help prevent premature solidification of the material, and if a submerged gate is used, the minimum diameter of the gate should be 0.75 mm;
step five, cooling, and after the step four is finished, carrying out next operation when the mould is cooled to below 20 ℃;
sixthly, opening the die to take the part, opening the die to complete the demoulding action of the product and the die, and then taking the part by adopting a manipulator;
and seventhly, in the process of inspection, inspection can be carried out through three coordinates, rapid pipeline inspection can also be carried out through a specific inspection tool, and the inspection is determined according to the quantization degree of the product.
Preferably, in the second step, the temperature of the mold is 83-98 ℃, the injection pressure is 850-1000 bar, and the temperature of the mold should be correspondingly increased and the injection pressure should be increased with the higher melting temperature of the material and the structural design of the product, so as to ensure the rapid transfer in place and the part molding.
Preferably, in the sixth step, the manipulator is six manipulators, and the one end that the mould was kept away from to the manipulator is AGV goods shelves, and AGV goods shelves can transport appointed position with the work piece after the unloading according to the regulation of setting for, has avoided artificial part transmission, has promoted work efficiency, adopts six manipulators, and the flexibility ratio is high, satisfies more easily and does not use grabbing and taking and putting operation of part, and a six manipulators can replace a lot of frocks moreover for the structure is simpler.
The whole structure is provided with specific parameters and detailed steps, specific steps and parameters are set for the inner cavity sealing element under the specific part B column, an operator strictly operates according to requirements, the quality and the high yield of the part can be guaranteed, the operation steps are further optimized and set on the basis of the current specification, and the technical effect is more obvious.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (3)
1. The forming method of the lower inner cavity sealing element of the right B column for the automobile is characterized in that:
firstly, preparing materials, namely preparing black materials by using PA 66; the EVA raw material is yellow, the dosage ratio of PA66 to EVA is 3:1, and the PA66 raw material is used for manufacturing;
secondly, drying treatment, namely drying the PA66 raw material in the first step in hot air of more than 80 ℃ for 16 hours when the humidity is more than 0.2%; if the PA66 material is exposed for more than 8 hours, drying the material in vacuum for more than 8 hours at 105 ℃;
sealing and storing the EVA raw material;
thirdly, performing heat treatment, namely respectively heating the PA66 raw material and the EVA raw material in the first step, wherein the heating temperature of the PA66 raw material is 250-280 ℃, heating to a molten state, and performing heat preservation treatment;
step four, casting and molding, namely casting a PA66 raw material, wherein the mold temperature is 80-90 ℃, the injection pressure is 750-1250 bar, the aperture of a sprue is not less than 0.5 t, and t is the thickness of a molded part; casting and cooling the PA66 for 8 minutes, and then casting an EVA raw material;
step five, cooling, and after the step four is finished, carrying out next operation when the mould is cooled to below 20 ℃;
sixthly, opening the die to take the part, opening the die to complete the demoulding action of the product and the die, and then taking the part by adopting a manipulator;
and seventhly, checking.
2. The method for molding a right B-pillar lower inner cavity seal for an automobile according to claim 1, wherein: in the second step, the temperature of the mould is 83-98 ℃, and the injection pressure is 850-1000 bar.
3. The method for molding a right B-pillar lower inner cavity seal for an automobile according to claim 1, wherein: and in the sixth step, the manipulator is a six-axis manipulator, and one end of the manipulator, which is far away from the mould, is an AGV shelf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242724.6A CN110919968A (en) | 2019-12-06 | 2019-12-06 | Forming method of lower inner cavity sealing element of right B column for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242724.6A CN110919968A (en) | 2019-12-06 | 2019-12-06 | Forming method of lower inner cavity sealing element of right B column for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110919968A true CN110919968A (en) | 2020-03-27 |
Family
ID=69857377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911242724.6A Pending CN110919968A (en) | 2019-12-06 | 2019-12-06 | Forming method of lower inner cavity sealing element of right B column for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110919968A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19743134A1 (en) * | 1997-09-30 | 1999-04-01 | Hoechst Ag | Molded parts made of polyacetal with directly molded functional elements made of thermoplastic elastomers |
| US20090051191A1 (en) * | 2007-08-24 | 2009-02-26 | Hutchinson | Method for manufacturing a door upper module for a window panel of a vehicle, and such a module |
| CN103842145A (en) * | 2011-05-10 | 2014-06-04 | 哈特奇桑公司 | Profile section moulded by multi-injection moulding and forming a seal or a moulding for the body of a motor vehicle, and method for manufacturing same |
| CN206202438U (en) * | 2016-11-24 | 2017-05-31 | 天津优创塑胶制品有限公司 | A kind of sound insulating seal part for A pole of car inner chamber |
-
2019
- 2019-12-06 CN CN201911242724.6A patent/CN110919968A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19743134A1 (en) * | 1997-09-30 | 1999-04-01 | Hoechst Ag | Molded parts made of polyacetal with directly molded functional elements made of thermoplastic elastomers |
| US20090051191A1 (en) * | 2007-08-24 | 2009-02-26 | Hutchinson | Method for manufacturing a door upper module for a window panel of a vehicle, and such a module |
| CN103842145A (en) * | 2011-05-10 | 2014-06-04 | 哈特奇桑公司 | Profile section moulded by multi-injection moulding and forming a seal or a moulding for the body of a motor vehicle, and method for manufacturing same |
| CN206202438U (en) * | 2016-11-24 | 2017-05-31 | 天津优创塑胶制品有限公司 | A kind of sound insulating seal part for A pole of car inner chamber |
Non-Patent Citations (1)
| Title |
|---|
| 张继祥: "《工程创新实践》", 30 June 2011, 国防工业出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20200327 |