KR20170075362A - Mold device for forming vehicle body part and method of manufacturing vehicle body part using the mold device - Google Patents

Mold device for forming vehicle body part and method of manufacturing vehicle body part using the mold device Download PDF

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Publication number
KR20170075362A
KR20170075362A KR1020150184921A KR20150184921A KR20170075362A KR 20170075362 A KR20170075362 A KR 20170075362A KR 1020150184921 A KR1020150184921 A KR 1020150184921A KR 20150184921 A KR20150184921 A KR 20150184921A KR 20170075362 A KR20170075362 A KR 20170075362A
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KR
South Korea
Prior art keywords
mold
body part
steel blank
prepreg
upper mold
Prior art date
Application number
KR1020150184921A
Other languages
Korean (ko)
Inventor
김대근
서종덕
임창용
남재두
Original Assignee
주식회사 신영
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 신영 filed Critical 주식회사 신영
Priority to KR1020150184921A priority Critical patent/KR20170075362A/en
Publication of KR20170075362A publication Critical patent/KR20170075362A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/16—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Abstract

The present invention relates to a mold apparatus for molding a body part and a method of manufacturing a body part using the same. A mold apparatus for molding a vehicle body part comprises a lower mold for loading a steel blank in which a prepreg patch is laminated, a mold for molding a body part in a state in which a prepreg patch is laminated on a steel blank, A heating unit for heating the lower mold and the upper mold, and a sealing member mounted on the lower surface of the upper mold to seal the periphery of the prepreg patch in a state where the upper mold and the lower mold are combined.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold apparatus for molding a body part and a method for manufacturing a body part using the same,

The present invention relates to techniques for manufacturing body parts such as side outer complete.

The side outer complete is a body part that is installed on each side of the vehicle to support the roof and keep the door. In general, side outer complete is manufactured by hot stamping method for light weight and high strength, but it has high initial equipment investment cost, work space limitation, and post processing such as product trimming and piercing are difficult. Particularly, a product manufactured by the hot stamping method has high mechanical properties, but has a problem that the impact absorbing ability is low when the vehicle side collides due to brittleness.

The object of the present invention is to provide a mold apparatus for molding a vehicle body part capable of manufacturing a vehicle body part having improved shock absorbing capability and capable of preventing contamination of a vehicle body part or upper and lower metal molds in the course of manufacturing a vehicle body part, .

According to an aspect of the present invention, there is provided a mold apparatus for molding a body part, comprising a prepreg patch stacked on a steel blank, A heating unit for heating the lower mold and the upper mold, and a heating unit for heating the periphery of the prepreg patch in a state where the upper mold and the lower mold are combined with each other, And a sealing member mounted on a lower surface of the upper mold.

The method for manufacturing a body part using the mold apparatus according to the present invention is a manufacturing method using the above-described mold apparatus, comprising the steps of: preparing a steel blank and a prepreg patch; partially joining the prepreg patch on the steel blank, A step of stacking the steel blank on which the lag patch is joined on the lower mold in a separated state so that the prepreg is surrounded by the sealing member, and a step of combining the upper mold and the lower mold to simultaneously press the prepreg patch and the steel blank, And simultaneously heating the prepreg patch and the steel blank by the heating unit to mold the body part.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to manufacture a vehicle component having improved impact absorbing capability.

According to the present invention, since the resin flowing out of the prepreg patch can be prevented from flowing to the surface of the steel blank and adhering to the surface of the steel blank during the process of simultaneously pressing and heating the steel blank and the prepreg patch to form the body blank, The surface of the portion formed by the steel blank in the region can be easily managed. Later, spot welding or the like can be performed without performing any surface treatment on the steel blank forming portion of the body part.

In addition, since the outflow resin does not leak to the outside from the molding space between the upper mold and the lower mold, the mold can be easily managed. As a result, it is possible to prevent contamination of the vehicle body parts or the upper and lower dies during the manufacturing process of the vehicle body parts.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing an example of a body part molded by a body mold for molding a body part according to an embodiment of the present invention; FIG.
2 is a configuration diagram of a mold apparatus for molding a body part according to an embodiment of the present invention.
Fig. 3 is a perspective view showing the lower surface of the upper mold in Fig. 2. Fig.
FIG. 4 is an exploded perspective view of FIG. 3. FIG.
FIG. 5 is a view showing a state in which the upper mold and the lower mold are combined in FIG.
6 is a view for explaining a process of manufacturing a vehicle body part by a mold apparatus for molding a body part according to an embodiment of the present invention.

The present invention will now be described in detail with reference to the accompanying drawings. Here, the same reference numerals are used for the same components, and a detailed description of known functions and configurations that may unnecessarily obscure the gist of the present invention will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing an example of a body part molded by a body mold for molding a body part according to an embodiment of the present invention; FIG.

The body part shown in Fig. 1 corresponds to a side outer complete. The side outer complete parts are respectively installed on the left and right sides of the vehicle to support the roof and to hold the door. The side outer parts include a side sill 11, a center pillar 12, a roof side 13, A front pillar upper 14, and a front pillar lower 15.

The roof side (13) is disposed above the side chamber (11) with an interval therebetween. The upper end of the center pillar 12 is coupled to the central portion of the side chamber 11 and the lower end thereof is coupled to the central portion of the roof side 13. The front filler upper 14 is joined at its upper end to the front end of the roof side 13. The front pillow lower 15 has an upper end coupled to the lower end of the front filler upper 14 and a lower end coupled to a front end portion of the side seal 11. [ The front filler upper 14 and the front filler lower 15 form a front filler.

The mold apparatus for molding a body part according to an embodiment of the present invention includes a side seal 11, a center pillar 12, a roof side 13, a front filler upper 14 and a front filler lower 15, Can be molded. Of course, a mold apparatus for molding a body part can also form other body parts such as a floor panel, a roof panel and the like. Hereinafter, the molding of the side chamber 11 will be exemplified.

2 is a configuration diagram of a mold apparatus for molding a body part according to an embodiment of the present invention. Fig. 3 is a perspective view showing the lower surface of the upper mold in Fig. 2. Fig. FIG. 4 is an exploded perspective view of FIG. 3. FIG. FIG. 5 is a view showing a state in which the upper mold and the lower mold are combined in FIG.

2 to 5, a mold apparatus for molding a body part 100 according to an embodiment of the present invention is provided with a prepreg patch 22 laminated on a steel blank 21 So as to mold the body part 11.

Here, the steel blank 21 may be made of a steel material having strength of 980PMa or less. The prepreg patch 22 is a patch made of a composite material preliminarily impregnated with a resin in the reinforcing fiber. The prepreg may be a CFRP (Carbon Fiber Reinforced Plastics) prepreg. The prepreg patches 22 may be disposed on the steel blank 21 in a size smaller than the steel blank 21.

The vehicle body part molding die apparatus 100 includes a lower mold 110, an upper mold 120, a heating unit 130, and a sealing member 140.

The lower mold 110 is loaded with a steel blank 21 on which prepreg patches 22 are stacked. The lower mold 110 has a molding portion on its upper surface. The forming portion of the lower mold 110 has a shape reverse to the bottom shape of the body part 11. [

The upper mold 120 is fitted or separated from the lower mold 110. The upper mold 120 can move up and down with respect to the lower mold 110. In this case, the upper mold 120 is connected to a movable frame (not shown) of a hydraulic or mechanical press apparatus, and can move up and down together with the movable frame when the movable frame moves up and down.

The upper mold 120 has a molding part on the lower surface. The forming portion of the upper mold 120 has a shape opposite to that of the top surface of the body part 11. [ The upper mold 120 is molded with the lower mold 110 so that the steel blank 21 with the prepreg patch 22 laminated thereon can be pressed into the body part 11.

The heating unit 130 is for heating the lower mold 110 and the upper mold 120. When the upper mold 120 and the lower mold 110 are combined to press the prepreg patch 22 and the steel blank 21, the heating unit 130 heats the lower mold 110 and the upper mold 120 do. Therefore, the prepreg patch 22 and the steel blank 21 can be heated while being pressurized. The heating unit 130 may include a lower heater 131 mounted on the lower mold 110 and an upper heater 132 mounted on the upper mold 110. For example, the lower heater 131 and the upper heater 132 may be respectively composed of a plurality of heater cartridges.

The sealing member 140 is mounted on the lower surface of the upper mold 120 so as to seal the periphery of the prepreg patch 22 in a state where the upper mold 120 and the lower mold 110 are engaged. The sealing member 140 may be in the form of a closed-loop such as an o-ring or the like. The sealing member 140 may be made of an elastic material such as rubber, urethane, or silicone having excellent heat resistance.

The upper mold 120 may have a mounting groove 121 for mounting the sealing member 140 thereon. The mounting groove 121 may be sized to partially fit the upper portion of the sealing member 140 and to protrude the lower portion of the sealing member 140. The mounting groove 121 may have various cross-sectional shapes such as a trapezoid, a circle, and a polygon.

The sealing member 140 is elastically deformed and can be brought into close contact with the upper surface of the steel blank 21 along the periphery of the prepreg patch 22 when the upper mold 120 is formed with the lower mold 110. [ Accordingly, the sealing member 140 can form a sealing space along the periphery of the prepreg patch 22 between the upper mold 120 and the steel blank 21. Therefore, since the prepreg patch 22 can be disposed in the sealing space and sealed, the following effects can be obtained.

When the prepreg patch 22 is heated in the process of being molded simultaneously with the steel blank 21, the resin impregnated in the prepreg may flow out, and the resin may not leak out of the sealing space by the sealing member 140 It is possible to prevent the flowing resin from flowing to the surface of the steel blank 21 to adhere thereto. Therefore, it is possible to easily manage the surface of the portion formed by the steel blank 21 in the region of the body part 11. It is possible to perform spot welding or the like without any additional surface treatment at the molding site of the steel blank 21 of the body part 11 in the future.

Since the outflow resin does not leak to the outside from the molding space between the upper mold 120 and the lower mold 110, the upper mold 120 and the lower mold 110 can be easily managed. As a result, it is possible to prevent the contamination of the body part 11 or the contamination of the upper mold 120 and the lower mold 110 in the process of manufacturing the vehicle body part 11. [

A process of manufacturing the body part 11 by the mold apparatus 100 for molding a body part according to an embodiment of the present invention will now be described with reference to FIG.

First, a steel blank 21 and a prepreg patch 22 are provided. Here, the shape of the steel blank 21 and the prepreg patch 22 can be set appropriately according to the shape of the body part 11 to be molded. A plurality of prepreg patches 22 may be provided as required.

Then, the prepreg patches 22 are stacked on the steel blank 21 for partial joining. At this time, the prepreg patch 22 can be partly joined to the steel blank 21 by partially heating it to about 50 캜.

Thereafter, the steel blank 21 to which the prepreg patch 22 is bonded is placed on the lower mold 10 in a state of being separated, and the prepreg patch 22 is stacked so as to be surrounded by the sealing member 140 do.

The upper mold 120 and the lower mold 110 are then combined to press the prepreg patch 22 and the steel blank 21 at the same time and the prepreg patch 22 The steel blank 21 can be simultaneously heated to form the body part 11, and then the body part 11 can be cooled and cured. At this time, since the prepreg patch 22 is heated in a sealed state by the sealing member 130, the resin flowing out of the prepreg patch 22 does not flow to the surface of the steel flank 21.

The prepreg patch 22 is bonded to the steel blank 21 without being bonded to the steel blank 21 because the prepreg patch 22 can be bonded to the steel blank 21 when the portion contacting the steel blank 21 is melted and then cooled and hardened. A part of the component 11 can be constituted.

The body part 11 manufactured as described above is constructed so that the portion 11a formed by the steel blank 21 is resistant to impact and the portion 11b formed by the prepreg patch 22 is capable of absorbing the impact . Therefore, compared with the case where the body part 11 is manufactured by the hot stamping or the roll forming method, the shock absorbing ability can be improved.

On the other hand, by trimming the body part 11 manufactured by the above-described process, each appearance can be trimmed. At this time, since the portion made of the steel material in the body part 11 is made to have a strength capable of being cold-pressed, the press trimming method can be applied instead of the laser trimming method.

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 taken by way of limitation and that those skilled in the art will recognize that various modifications and equivalent arrangements may be made therein. It will be possible. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

21. Steel Blank
22. PREPRAG PATCH
110. Lower mold
120. Upper mold
121 .. Mounting groove
130 .. Heating unit
140.

Claims (3)

A prepreg patch is stacked on a steel blank and supplied to form a body part,
A lower mold for loading a steel blank on which prepreg patches are stacked;
An upper mold that is formed or separated from the lower mold;
A heating unit for heating the lower mold and the upper mold; And
A sealing member mounted on the lower surface of the upper mold so as to seal the periphery of the prepreg patch in a state where the upper mold and the lower mold are combined;
And a mold part for molding the body part.
The method according to claim 1,
And a mounting groove for mounting the sealing member is formed on the lower surface of the upper mold.
A manufacturing method using the mold apparatus according to claim 1 or 2,
Preparing a steel blank and a prepreg patch;
Stacking prepreg patches on a steel blank and partially joining them;
Stacking a steel blank to which the prepreg patch is bonded on a lower mold in a separated state, the prepreg being surrounded by the sealing member; And
Molding the upper mold and the lower mold to simultaneously press the prepreg patch and the steel blank, and simultaneously heating the prepreg patch and the steel blank by the heating unit to mold the body part;
Wherein the mold assembly includes a plurality of molds.
KR1020150184921A 2015-12-23 2015-12-23 Mold device for forming vehicle body part and method of manufacturing vehicle body part using the mold device KR20170075362A (en)

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Application Number Priority Date Filing Date Title
KR1020150184921A KR20170075362A (en) 2015-12-23 2015-12-23 Mold device for forming vehicle body part and method of manufacturing vehicle body part using the mold device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150184921A KR20170075362A (en) 2015-12-23 2015-12-23 Mold device for forming vehicle body part and method of manufacturing vehicle body part using the mold device

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109570353A (en) * 2017-09-29 2019-04-05 长城汽车股份有限公司 The molding die component and auto production line of side-wall outer-plate
KR102158050B1 (en) * 2020-08-27 2020-09-22 오세현 Mold device that can simultaneously mold carbon plates of various thicknesses and extended thicknesses
KR102317194B1 (en) * 2020-12-14 2021-10-25 (주)서영 Vacuum and pressure casting apparatus
EP4101615A1 (en) * 2021-06-10 2022-12-14 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Apparatus and method for producing metal-resin composite

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109570353A (en) * 2017-09-29 2019-04-05 长城汽车股份有限公司 The molding die component and auto production line of side-wall outer-plate
KR102158050B1 (en) * 2020-08-27 2020-09-22 오세현 Mold device that can simultaneously mold carbon plates of various thicknesses and extended thicknesses
KR102317194B1 (en) * 2020-12-14 2021-10-25 (주)서영 Vacuum and pressure casting apparatus
EP4101615A1 (en) * 2021-06-10 2022-12-14 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Apparatus and method for producing metal-resin composite

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