CN109501095A - Automotive trim panel PU epidermis moulding process - Google Patents
Automotive trim panel PU epidermis moulding process Download PDFInfo
- Publication number
- CN109501095A CN109501095A CN201811245931.2A CN201811245931A CN109501095A CN 109501095 A CN109501095 A CN 109501095A CN 201811245931 A CN201811245931 A CN 201811245931A CN 109501095 A CN109501095 A CN 109501095A
- Authority
- CN
- China
- Prior art keywords
- high pressure
- pressure mixing
- raw material
- spraying
- spray
- 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
Links
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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/08—Coating a former, core or other substrate by spraying or fluidisation, e.g. spraying powder
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/36—Feeding the material on to the mould, core or other substrate
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/46—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
-
- 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
- B29L2031/3041—Trim panels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
In order to solve in the prior art because compressed air influences the technical issues of spray angle caused boundary to spray, the present invention provides automotive trim panel PU epidermis moulding process.Above-mentioned technique is made of urethane raw preparatory process and spraying process.The urethane raw of two components is being pressurized to high pressure conditions after measuring equipment accurate measurement the following steps are included: the first step by urethane raw preparatory process；Second step obtains high pressure mixing raw material for static mixing is carried out in the two part polyurethane raw materials injection high-pressure mixing equipment of pressurization.In this process, high pressure mixing is carried out to two part polyurethane raw materials using high-pressure mixing equipment, without so good control can be obtained in PU spray angle, avoiding the generation of " crossing boundary's spraying " phenomenon to mold blowing compressed air so in spraying process.
Description
Technical field
The present invention relates to decorative panel for automobile manufacturing technology fields, are directed primarily to the molding work of formed automobile trim panel
Skill.
Background technique
It is constantly progressive as auto manufacturing technology is horizontal, people propose higher and higher want to automobile energy consumption is reduced
It asks, this popularization and application for plastic part in automobile industry provides wide development space.In recent years, plastic part is in vapour
Application percentage in vehicle production is increasing.At present the inner and outer decorative parts of automobile substantially realize plastic, for automobile mitigate weight,
Save the cost and reduction oil consumption play an important role.
In order to make interior trim surface obtain clear beautiful grain effect, the interior trim surface of middle and high end vehicle is mostly coated with soft
Property epidermis.Traditional epidermis forming technique mainly include vacuum forming, slush molding, female mould forming, PU injection epidermis molding with
And PU spraying epidermis molding, the raw material for being suitable for spraying process is issued as major urethane raw supplier, the world does not turn off,
So that PU spraying epidermis moulding process has been to be concerned by more and more people.However, easily occurring in PU spraying epidermis forming process
Because compressed air influences the phenomenon that spray angle caused boundary to spray, the uniformity of PU epidermis is difficult to ensure, leads to PU spraying table
The molding yield rate of skin is low.
Summary of the invention
The object of the present invention is to provide a kind of techniques of raising inside gadget PU spraying epidermis molding qualification rate.
In order to achieve the above objectives, technical scheme is as follows:
Automotive trim panel PU epidermis moulding process, is made of urethane raw preparatory process and spraying process；
The urethane raw preparatory process the following steps are included:
The urethane raw of two components is being pressurized to high pressure conditions after measuring equipment accurate measurement by the first step；
Second step obtains high pressure for static mixing is carried out in the two part polyurethane raw materials injection high-pressure mixing equipment of pressurization
Mixed raw material；
The spraying process the following steps are included:
The first step is sprayed in the mould for eliminating electrostatic in the intracavitary spraying of the type of nickel shell mold tool and is painted；
Second step, quantitative injected system inject the quantitative high pressure mixing raw material into heating equipment；Heating equipment will
High pressure mixing raw material is kept the temperature after being heated to certain temperature；
High pressure mixing raw material after heating is sprayed into nickel shell mold using rotary cup spray head by third step at an angle
The type of tool is intracavitary；
Spray coated nickel shell mold tool is transferred to cooling work area, is cured by forced ventilation or water-spraying control by the 4th step,
Curing time is 60s~90s.
It is preferable that, temperature sensor is installed in the rotary cup spray head as one kind of the invention, with monitoring
The temperature of high pressure mixing raw material.
As one kind of the invention, it is preferable that, the rotary cup spray head has spray-coating surface perpendicular to the nickel shell mold,
The spray angle of formation is 90 °.
Compared with prior art, the invention has the following advantages:
1. carrying out high pressure mixing to two part polyurethane raw materials using high-pressure mixing equipment, so it is not necessarily in spraying process
To mold blowing compressed air, so good control can be obtained in PU spray angle, the generation of " crossing boundary's spraying " phenomenon is avoided；
2. rotary cup spray head is by high pressure mixing raw material, mode is sprayed on nickel shell mold tool rotate at high speed, it is ensured that PU table
Therefore the uniformity of skin, raw material also greatly save；
3. temperature sensor monitors the temperature of high pressure mixing raw material, to guarantee the mobility of raw material, guarantee the equal of PU epidermis
Evenness.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below.
Automotive trim panel PU epidermis moulding process, is made of urethane raw preparatory process and spraying process.
Urethane raw preparatory process the following steps are included:
The urethane raw of two components is being pressurized to high pressure conditions after measuring equipment accurate measurement by the first step；
Second step obtains high pressure for static mixing is carried out in the two part polyurethane raw materials injection high-pressure mixing equipment of pressurization
Mixed raw material.
In this process, high pressure mixing is carried out to two part polyurethane raw materials using high-pressure mixing equipment, is so being sprayed
In the process it is not necessary that so good control can be obtained in PU spray angle, it is existing to avoid " crossing boundary's spraying " to mold blowing compressed air
The generation of elephant.
Spraying process the following steps are included:
The first step is sprayed in the mould for eliminating electrostatic in the intracavitary spraying of the type of nickel shell mold tool and is painted；
Second step, quantitative injected system inject quantitative high pressure mixing raw material into heating equipment；Heating equipment is by high pressure
Mixed raw material is kept the temperature after being heated to certain temperature；
Third step uses rotary cup spray head that the high pressure mixing raw material after heating is sprayed into nickel shell mold tool with 90 ° of angles
Type is intracavitary；
Spray coated nickel shell mold tool is transferred to cooling work area, is cured by forced ventilation or water-spraying control by the 4th step,
Curing time is 60s~90s.
Rotary cup spray head has spray-coating surface perpendicular to nickel shell mold, and by high pressure mixing raw material, mode is sprayed into nickel rotate at high speed
On shell mold tool, it is ensured that therefore the uniformity of PU epidermis, raw material also greatly save.
Preferably, temperature sensor is installed in rotary cup spray head, to monitor the temperature of high pressure mixing raw material.If warm
Degree sensor monitors that the temperature of high pressure mixing raw material is below or above default value, then the check valve of rotary cup spray head
It does not open.
The a variety of of these embodiments are repaired by this will be readily apparent to those skilled in the art, herein
Defined General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and new
The consistent widest scope of clever feature.
Claims (3)
1. automotive trim panel PU epidermis moulding process, is made of urethane raw preparatory process and spraying process, it is characterised in that:
The urethane raw preparatory process the following steps are included:
The urethane raw of two components is being pressurized to high pressure conditions after measuring equipment accurate measurement by the first step；
Second step obtains high pressure mixing for static mixing is carried out in the two part polyurethane raw materials injection high-pressure mixing equipment of pressurization
Raw material；
The spraying process the following steps are included:
The first step is sprayed in the mould for eliminating electrostatic in the intracavitary spraying of the type of nickel shell mold tool and is painted；
Second step, quantitative injected system inject the quantitative high pressure mixing raw material into heating equipment；Heating equipment is by high pressure
Mixed raw material is kept the temperature after being heated to certain temperature；
High pressure mixing raw material after heating is sprayed into nickel shell mold tool using rotary cup spray head by third step at an angle
Type is intracavitary；
Spray coated nickel shell mold tool is transferred to cooling work area, is cured, cured by forced ventilation or water-spraying control by the 4th step
Time is 60s~90s.
2. automotive trim panel PU epidermis moulding process according to claim 1, which is characterized in that the rotary cup spray head
In temperature sensor is installed, to monitor the temperature of high pressure mixing raw material.
3. automotive trim panel PU epidermis moulding process according to claim 1 or 2, which is characterized in that the rotary cup spray
Coating head has spray-coating surface perpendicular to the nickel shell mold, and the spray angle of formation is 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811245931.2A CN109501095A (en) | 2018-10-24 | 2018-10-24 | Automotive trim panel PU epidermis moulding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811245931.2A CN109501095A (en) | 2018-10-24 | 2018-10-24 | Automotive trim panel PU epidermis moulding process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109501095A true CN109501095A (en) | 2019-03-22 |
Family
ID=65746884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811245931.2A Pending CN109501095A (en) | 2018-10-24 | 2018-10-24 | Automotive trim panel PU epidermis moulding process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109501095A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673964A (en) * | 2020-07-07 | 2020-09-18 | 安徽鲲鹏装备模具制造有限公司 | Cooling method for molded product of automotive interior molding machine |
-
2018
- 2018-10-24 CN CN201811245931.2A patent/CN109501095A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111673964A (en) * | 2020-07-07 | 2020-09-18 | 安徽鲲鹏装备模具制造有限公司 | Cooling method for molded product of automotive interior molding machine |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190322 |