KR20130048863A - Apparatus and method for manufacturing high-gloss product for vehicle - Google Patents

Apparatus and method for manufacturing high-gloss product for vehicle Download PDF

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Publication number
KR20130048863A
KR20130048863A KR1020110113745A KR20110113745A KR20130048863A KR 20130048863 A KR20130048863 A KR 20130048863A KR 1020110113745 A KR1020110113745 A KR 1020110113745A KR 20110113745 A KR20110113745 A KR 20110113745A KR 20130048863 A KR20130048863 A KR 20130048863A
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KR
South Korea
Prior art keywords
cavity
mold
cavity mold
molten resin
component
Prior art date
Application number
KR1020110113745A
Other languages
Korean (ko)
Inventor
정필중
구준모
김진호
Original Assignee
현대자동차주식회사
기아자동차주식회사
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Application filed by 현대자동차주식회사, 기아자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020110113745A priority Critical patent/KR20130048863A/en
Publication of KR20130048863A publication Critical patent/KR20130048863A/en

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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
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7312—Construction of heating or cooling fluid flow channels
    • 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
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C2045/0079—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping applying a coating or covering
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7312—Construction of heating or cooling fluid flow channels
    • B29C2045/7318—Construction of heating or cooling fluid flow channels multilayered fluid channel constructions

Abstract

PURPOSE: A device and a method for manufacturing a high gloss component for a vehicle are provided to improve fluidity of molten resin when ejecting the inside component and an outside component for an auxiliary vertical and to produce a component with deluxe images with high gloss. CONSTITUTION: A device for manufacturing a high gloss component for a vehicle comprises a cavity mold(10), a core mold(20), and an insulation mold(30). A cavity(12) is formed to the outer surface and molten resin is filled. The cavity mold comprises a heater(14) and a cooler(16) in the inside. The cavity mold is installed to be heated or cooled. The core mold is moved to the cavity mold and is equipped to seal the cavity. The core mold is formed in a desired shape for the inner space of the cavity. The insulation mold is installed to be supported to the cavity mold. The insulation mold comprises insulation space(32) formed to one part facing the cavity mold.

Description

Apparatus and method for manufacturing high gloss parts for vehicles {APPARATUS AND METHOD FOR MANUFACTURING HIGH-GLOSS PRODUCT FOR VEHICLE}

The present invention relates to an apparatus and method for manufacturing a high gloss component for a vehicle to improve the fluidity of a molten resin that is injection molded, to produce a part having a high gloss image, and to simplify a part manufacturing process for realizing a high gloss image. .

As a design trend in furniture or automobile interior and exterior parts (bumper grills, radiator grills, etc.) that have recently been released, there is an increasing trend of high-end designs with high glossy coatings having high gloss.

In order to realize such a high glossiness, a gloss coating and a clear coating (gloss coating) are usually applied to the surface of the product at least two times to increase the glossiness of the product.

However, in the case of ordinary polished products and parts in the situation of reducing the number of clear coating due to a cost problem in the coating process, there is a problem that the gloss of the product is significantly reduced.

However, even when the clear coating is performed several times, when the gloss coating is performed in a poor state, an additional cost is consumed in the maintenance work of the gloss coating, and there is a problem in that the cost of the high gloss operation is rapidly increased.

On the other hand, Figure 1 is a view showing an injection apparatus for manufacturing an injection molded article of a conventional synthetic resin, a cavity mold (1) having a cavity (1a) of a predetermined space is provided, so as to be sealed in the cavity mold (1) The core mold 2 is installed. At this time, the cavity mold 1 is provided with a cooling device (3).

That is, when the core mold 2 moves to the cavity mold 1 side, the molten resin is injected into the cavity 1a to inject the molded product, and together with the cooling device 3 installed in the cavity mold 1, It is operated to cool the molten resin in the cavity 1a together with the cavity mold 1.

Subsequently, after the injection molded part 4 is removed from the mold as shown in FIG. 2, the primer layer 5 is coated on the surface, and then the gloss coating layer 6 is coated to realize a desired color. Subsequently, the clear coating layer 7 is coated several times to give a glossiness and to protect the entire gloss coating, thereby making it possible to manufacture a high glossiness product.

However, in the conventional injection apparatus described above, only the cooling device is installed in the cavity mold, so that the temperature of the mold is kept at a relatively low temperature during the cooling solidification of the molten resin, which causes the molten resin to While cooling and solidifying rapidly, the flow of the molten resin is hindered, and as shown in FIG. 3, surface defects in the shape of water waves are generated on the surface of the product.

Furthermore, as described above, the cooling and solidification of the molten resin is rapidly performed. In the case of the injection mold having a plurality of molten resin inlets, the molten resin injected from each gate meets and solidifies as shown in FIG. 4. There is a problem in that weld lines are generated.

In particular, in the case of a product manufactured through such an injection mold, as the surface degree is poorly injected as described above, the gloss painting work for the implementation of the desired color must be accompanied, so that the cost and time for the gloss painting work There is an additional disadvantage.

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and improves the fluidity of the molten resin during the injection process of the interior and exterior parts of a vehicle, thereby producing a component having a high gloss image with high gloss. It is to provide a manufacturing apparatus and method.

The present invention provides a manufacturing apparatus and method for manufacturing a high gloss component for a vehicle to simplify the manufacturing process for implementing a high gloss image to reduce the cost required for high gloss work.

The configuration of the present invention for achieving the above object, the cavity is formed on the outer surface is filled with a molten resin, the heating device and the cooling device is provided inside the cavity mold for heating or cooling; And a core mold provided to move to the cavity mold side to seal the cavity, and to form an inner space of the cavity in a desired shape.

It is installed so as to be supported by the cavity mold, the heat insulating mold formed with a heat insulating space in a portion facing the cavity mold; may be configured to further include.

A method of manufacturing a high gloss component for a vehicle according to the present invention includes: a cavity mold heating step of heating a cavity mold by operating a heating device installed in the cavity mold; A molten resin filling step of filling the molten resin in the cavity provided in the cavity mold by moving the core mold to be sealed to the cavity mold side; And a cavity mold cooling step of cooling and injecting a molten resin filled in the cavity together with the cavity mold by operating a cooling device installed in the cavity mold while the heating through the heating device is stopped. .

After coating the primer layer on the surface of the part injected through the cavity mold cooling step, the clear coating layer may be coated.

Through the cavity mold cooling step, a clear coating layer may be coated on the surface of the injected part.

The present invention through the above-described problem solving means, the mold is heated by the heating device during the solidification action of the molten resin, thereby improving the flowability of the molten resin, thereby greatly improving the surface degree of the parts to be injected, Due to this, the injection product itself has the effect of realizing a high gloss image of high gloss.

In addition, since the injection molding of the parts with improved surface precision of the injection parts is possible, the gloss painting work can be omitted, thereby reducing the cost and time required for the gloss painting work.

1 is a view showing an injection molding apparatus according to the prior art.
Figure 2 schematically shows the cross-sectional structure of a high gloss coated component according to the prior art.
Figure 3 is a view showing the surface degree of the part injected through the injection molding apparatus according to the prior art.
Figure 4 is a view showing a state in which the weld line of the parts injected through the injection molding apparatus according to the prior art.
5 is a view showing an apparatus for manufacturing a high gloss component for a vehicle according to the present invention.
Figure 6 is a schematic view showing a cross-sectional structure of a part manufactured through the apparatus and method for manufacturing a high gloss component according to the present invention.
7 and 8 is a view showing the surface degree of the parts manufactured by the manufacturing apparatus of the high-gloss parts according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the apparatus for manufacturing a high gloss component for a vehicle of the present invention shown through FIG. 5, a cavity 12 is formed on an outer surface thereof to fill a molten resin, and a heating device 14 and a cooling device 16 are provided therein, respectively. Alternatively, the cavity mold 10 to be cooled and the core mold moved to the cavity mold 10 and provided to seal the cavity 12 and the inner space of the cavity 12 are formed in a desired shape. 20).

That is, by providing the cooling device 16 as well as the heating device 14 in the cavity mold 10, the cavity mold 10 can be heated, thereby improving the fluidity of the molten resin and injecting the component 40. Can improve the surface accuracy.

Here, the heating device 14 installed in the cavity mold 10 may be configured such that an electric heater or the like is built into the cavity mold 10, and the cooling device 16 installed in the cavity mold 10 may have cooling water. It is possible to configure the built-in pipeline to flow. In this case, the heating device 14 and the cooling device 16 may be controlled to be sequentially operated through a controller 18 provided separately.

In the present invention, the heating device 14 and the cooling device 16 are shown to be installed on different planes, but according to the design of the mold, the heating device 14 and the cooling device 16 are arranged on the same plane. It may be installed together.

The present invention is installed to be supported by the cavity mold 10, it may be configured to further include a heat insulating mold 30, the heat insulating space 32 is formed in a portion facing the cavity mold 10.

That is, when the heat or cold heat is applied to the cavity mold 10 through the operation of the heating device 14 or the cooling device 16, it is confirmed that the heat applied to the cavity mold 10 is lost by heat conduction. Can be minimized to reduce energy loss.

5 and 6 will be described in detail the operation and effect of the present invention.

In the method for manufacturing a high gloss component for a vehicle of the present invention, the cavity mold heating step of heating the cavity mold 10 by operating the heating device 14 installed in the cavity mold 10, and the core mold 20 in the cavity mold ( 10) a molten resin filling step of filling the molten resin in the cavity 12 provided in the cavity mold 10 by moving to be sealed to the side, and the cavity mold 10 in a state in which the heating by the heating device 14 is stopped. And a cavity mold cooling step of operating and cooling the cooling device 16 installed in the cavity mold 10 to cool and inject the molten resin filled in the cavity 12 together with the cavity mold 10.

Specifically, first, the cavity mold 10 is heated by operating the heating device 14 installed in the cavity mold 10 while the core mold 20 is moved upward. At this time, the heating operation of the cavity mold 10 is rapidly heated within about 20 seconds using an electric heater capable of producing a maximum temperature of about 300 ℃.

Subsequently, the core mold 20 is moved downward to closely contact the cavity mold 10 so that the cavity 12 space is sealed. After the operation of the heating device 14 is stopped, the injection molding operation is performed by injecting and filling the molten resin into the cavity 12 through the injection hole 22 formed in the core mold 20.

In this case, the heating device 14 is described as stopping the heating operation before the injection of the molten resin, but in some cases, the heating device 14 may be continuously operated in the injection molding process.

Subsequently, when the filling of the molten resin is completed, the cooling device 16 is operated while the operation of the heating device 14 is stopped to cool the molten resin filled in the cavity 12 as well as the cavity 12. Complete the injection molding process of the part.

At this time, the cooling operation of the cavity mold 10 is rapidly cooled in about 30 seconds using the cooling water having a temperature of about 15 ℃.

As such, the parts to be injection-molded are in a state in which the temperature of the mold is heated by the heating device 14 during the solidification of the molten resin, so that the flow of the molten resin does not interfere even when the molten resin comes into contact with the mold surface. Is improved. Thus, as shown in FIG. 7, the degree of the surface of the part to be injected is greatly improved, and thus a high gloss part of the high gloss image can be produced.

In addition, since the fluidity is greatly improved during the solidification of the molten resin as described above, even if a plurality of injection holes 22 are provided, weld lines are formed at portions where the molten resins injected from each injection hole 22 meet each other. ) Is not generated, and as a result, the surface of the component can be uniformly formed as shown in FIG. 8.

On the other hand, the present invention after coating the primer layer 50 on the surface of the component 40 injected through the cavity mold cooling step, it may be coated with a clear coating layer (60).

In addition, the present invention may coat the clear coating layer 60 on the surface of the component 40 injected through the cavity mold cooling step.

That is, when the core mold 20 is moved upward to secure the finished part, the primer layer 50 is coated on the surface of the injected part 40 by using a primer coating liquid to corrode the surface of the part. In addition to protecting from physical shocks, the subsequent coating layer and adhesion of the parts can be made smoothly.

In addition, following the primer coating, the clear coating layer 60 is usually coated with a transparent varnish, thereby protecting the overall coating from the external environment and further highlighting the high gloss feeling of the part.

In this case, the clear coating layer 60 may be directly coated on the parts of the injected surface without applying the primer coating.

As described above, the present invention improves the fluidity of the molten resin through rapid heating or cooling of the mold to improve the surface degree of the injected part, thereby producing a part having a dark natural color (usually black) while shining as the injection product itself. Will be able to produce.

Therefore, in order to prepare for the existing injection parts, it is possible to omit the gloss painting work, thereby reducing the cost of the gloss painting work, and in particular, to produce a very high quality high gloss parts even if the gloss painting work is omitted. do.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the specific embodiments set forth herein; rather, .

10: cavity mold 12: cavity
14 heating device 16 cooling device
20: core mold 30: insulation mold
32: insulation space 40: injected parts
50: primer layer 50: clear coating layer

Claims (5)

Cavity mold 10 to form a cavity 12 on the outer surface is filled with a molten resin, the heating device 14 and the cooling device 16 is provided therein to be heated or cooled; And
The core mold 20 is provided to be moved to the cavity mold 10 to close the cavity 12, so that the internal space of the cavity 12 is formed in a desired shape. Device. The method according to claim 1,
It is installed to be supported by the cavity mold 10, the heat insulating mold 30 is formed with a heat insulating space 32 in a portion facing the cavity mold 10; apparatus for manufacturing high gloss parts for vehicles . A cavity mold heating step of operating the heating device 14 installed in the cavity mold 10 to heat the cavity mold 10;
A molten resin filling step of filling the molten resin in the cavity 12 provided in the cavity mold 10 by moving the core mold 20 to be sealed to the cavity mold 10 side; And
Cooling and injecting the molten resin filled in the cavity 12 together with the cavity mold 10 by operating the cooling device 16 installed in the cavity mold 10 while the heating through the heating device 14 is stopped. Cavity mold cooling step; manufacturing a high gloss component for a vehicle comprising a. The method according to claim 3,
After coating the primer layer (50) on the surface of the component 40 injected through the cavity mold cooling step, a method for manufacturing a high gloss component for a vehicle, characterized in that for coating a clear coating layer (60). The method according to claim 3,
Method of manufacturing a high gloss component for a vehicle, characterized in that the coating of the clear coating layer (60) on the surface of the component 40 injected through the cavity mold cooling step.
KR1020110113745A 2011-11-03 2011-11-03 Apparatus and method for manufacturing high-gloss product for vehicle KR20130048863A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150135708A (en) * 2014-05-23 2015-12-03 덕양산업 주식회사 Manufacturing method of skin for crash pad
US9499717B2 (en) 2013-09-16 2016-11-22 Hyundai Motor Company One coat painting composition for high gloss and coating method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9499717B2 (en) 2013-09-16 2016-11-22 Hyundai Motor Company One coat painting composition for high gloss and coating method thereof
KR20150135708A (en) * 2014-05-23 2015-12-03 덕양산업 주식회사 Manufacturing method of skin for crash pad

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