KR20190055306A - A sealing insert member for injection molding and a hybrid inner panel including the same - Google Patents

Abstract

Provided are a sealing insert member for injection molding and a hybrid inner panel including the same. The present invention provides a sealing insert member for injection molding arranged on an inner side of an outer panel to be coupled to a door trim, and used when injection molding an inner panel for a door including a window frame unit, a body unit and a door trim panel, whereas being inserted into an area where the part and the remaining parts come into contact to prevent mixture between the different colors or the different materials, integrally coupling the part and the remaining part to each other and being integrated with the inner panel when a part of the window frame unit. The body unit and the door trim panel and the remaining parts are integrally formed of plastic of different colors or different materials within each of the molds. The present invention arranges the sealing insert member inserted into the mold to prevent the mixture between the different colors or the different materials, whereas being integrated with the different colors or the different materials and firmly coupled to form a part of the inner panel for the door, thereby discriminating colors by each of components constituting the inner panel (in the case of different colors) or implementing different functionalities (in the case of different materials, corrosion resistance, wear resistance, high strength, etc.) easily, clearly and neatly to be able to promote high quality of the inner panel itself.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a sealing insert member for injection molding and a hybrid inner panel including the sealing insert member. 2. Description of the Related Art [0002]

More particularly, the present invention relates to a sealing insert member for injection molding, and more particularly, to a sealing insert member for injection molding, which is inserted into a mold to prevent mixing of two or more different materials during injection molding, And a hybrid inner panel including the sealing insert member.

In general, a door of an automobile is formed by an outer panel assembly, an inner panel assembly, and a door trim assembly. The outer panel assembly refers to an outer panel of a door, and the inner panel assembly includes a door trim assembly Quot; refers to a panel that is coupled with an outer panel within the interior of the door before being joined.

The inner space between the outer panel assembly and the inner panel assembly accommodates a door glass which is reciprocated upward and downward and opens and closes the side windows. An operation module for reciprocating the door glass, other convenience devices, and side beams And so on.

The outer panel assembly and the inner panel assembly are formed by joining and machining a plurality of metal parts manufactured separately as shown in FIG. 6, in order to protect the occupant of the vehicle interior. In particular, in the case of the inner panel, More than two metal parts are processed by press working such as roll forming and then joined together by welding to form the shape.

In the inner panel manufactured in the conventional manner as described above, since a plurality of parts are separately manufactured through press forming such as roll forming or the like, they are individually welded to each other by a worker to form a predetermined shape, It is necessary to improve the quality problems such as the joint due to incomplete combination due to the work ability or condition of the worker as well as the increase in the production cost and the decrease in the productivity.

Further, in the case of an inner panel applied to a welding portion covering structure of an automobile door proposed in Korean Patent No. 10-1123778 (registered on Feb. 28, 2012), the material itself constituting the inner panel is a metal material having a relatively high weight There has been a problem in that it is not suitable for the trend of high efficiency and light weight of vehicles in recent years and is vulnerable to corrosion due to long-term use.

Therefore, policy support to resolve the above-mentioned problems at all costs, research and development thereof, and steady and continuous improvement and improvement are vital for the competitiveness of the automobile industry, which forms the basis of the domestic industry.

Korean Registered Patent No. 10-1123778 (Registration date: February 28, 2012)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an inner panel assembly for an automobile door which has been conventionally welded with a plurality of metal parts in order to enhance the quality of the inner panel itself, And a hybrid inner panel including the sealing insert member.

The above object is achieved in an injection molding of an inner panel for a door which is disposed inside an outer panel for an automobile door and is combined with a door trim and includes a window frame portion, a body portion and a door trim panel, When a part of the door trim panel and the rest of the panel are integrally formed in the mold by a plastic of a different color or a different material, the part and the rest are inserted into the area where they are in contact with each other, And the remaining parts are integrated with each other to be integrated with the inner panel.

Wherein the sealing insert member comprises: a plate-shaped connecting portion disposed along an area where the part and the rest touch; A contact engaging portion protruding from both sides of the connecting portion so that the connecting portion is fixed at the time of inserting into the metal mold, A protruding engaging portion protruding from the opposite side of the contact engaging portion with respect to the connecting portion, And a sealing part provided in the space formed by the protruding engaging part and the connection part to prevent mixing between the different colored or different materials.

And at least one of the contact engaging portion and the projecting engaging portion may be formed with a plurality of inflow holes through which molten plastic of a different color or different material is introduced into the mold.

The end surface of the inflow hole may have a wedge shape or a trapezoid shape that can prevent or prevent the separation of the part and the rest in the direction away from each other with respect to the sealing insert member.

The above object is achieved by an inner panel for a door, which is disposed on the inner side of an outer panel for an automotive door and is coupled with a door trim, comprising: a window frame which is opened and closed by a door glass; A body portion formed at a lower end portion of the window frame portion, the body panel having an outer panel and an inner space, the hollow portion being provided at a central portion thereof; A door trim panel formed to cover the hollow and coupled with the door trim; And a part of the window frame, the body part, and the door trim panel, and the remainder thereof are integrally formed in the metal mold with the dichroic or different kind of plastic, the part and the remainder are inserted into the area in contact with each other, And a sealing insert member which is integrally formed to prevent the penetration and to mutually combine the part and the rest of the liver.

The part is formed of carbon fiber-reinforced plastic by injection molding of an overmolding method, and the remainder is made of thermoplastics by injection molding, and the part and the remainder made of different materials are integrally molded in a single mold As shown in FIG.

At least one of the body portion and the door trim panel may be integrally formed with a polyurethane layer for sound absorption and absorption on the surface facing the internal space by in-mold coating injection molding.

According to the present invention, there is provided a sealing insert member which is inserted into a metal mold to prevent mixing of two or more different materials during injection molding, and is integrally formed with a dichroic or heterogeneous material and firmly combined to constitute a part of a door inner panel It is possible to easily and clearly and cleanly apply the color classification (in the case of two colors) or the different functions (in the case of the different kind, corrosion resistance, abrasion resistance, high rigidity) of the inner panel constituting the inner panel, There is an effect that can be.

Furthermore, since the hybrid inner panel formed of a different color or different material is integrally formed through a series of injection process with a sealing insert member to be inserted, the number of operations is drastically reduced as compared with a conventional metal inner panel assembly process, The productivity can be improved, the production cost can be reduced, and the weight can be reduced.

1 is an exploded perspective view of a hybrid inner panel to which a sealing insert member for injection molding according to an embodiment of the present invention is applied.
FIG. 2A is a view showing an outer surface of FIG. 1;
Fig. 2B is a view showing the inner side on the opposite side of Fig.
FIG. 3A is an assembled perspective view of FIG. 1. FIG.
FIG. 3B is an enlarged perspective view of a section taken along line AA in FIG. 3A.
4 is a flow chart for manufacturing Fig.
FIGS. 5A to 5D are process diagrams showing the steps of manufacturing the region B in FIG. 3B corresponding to the flowchart of FIG.
6 is a view for explaining the structure and coupling relation of a conventional inner panel for a metallic automobile door.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

Fig. 1 is an exploded perspective view of a hybrid inner panel to which a sealing insert member according to an embodiment of the present invention is applied, Fig. 2a is an external view of Fig. 1, and Fig. 2b is a cross- FIG. 3A is a perspective view of the joint of FIG. 1, FIG. 3B is an enlarged cross-sectional view taken along line AA of FIG. 3A, FIG. 4 is a flowchart for manufacturing FIG. 1, FIG. 6 is a view for explaining the structure and the coupling relationship of the conventional inner panel for a metallic automobile door. FIG. 6 is a process diagram showing a process of manufacturing the area B of FIG. 3B corresponding to the flowchart of FIG.

The X, Y, and Z axes shown in the drawings are arbitrarily set for convenience of explanation, not for the purpose of limitation of rights. The X axis indicates the front (the arrow side, the front side of the automobile) (The arrow side, the interior side of the car) and the right side (the outside of the car), and the Z axis indicates the upward (up, down arrow) and downward (down arrow) directions. Each direction described below is based on this, except where otherwise specifically limited.

(For injection molding) The sealing insert member )

The sealing insert member 150 for injection molding according to the present invention is a member used in a door inner panel 100 which is integrally injection-molded in the molds 210 and 220, The use of different materials (use of different materials, corrosion resistance, abrasion resistance, high rigidity, etc.) according to color classification (use of a different color material) It was invented to make it easy, clear and clean.

Through the sealing insert member 150, the door inner panel 100 itself can be upgraded and improved in functionality, productivity can be improved, production cost can be reduced, and weight can be reduced.

The sealing insert member 150 according to the present invention is integrally formed and formed so that the window frame 110, the body 120 and the door trim panel 130 constituting the door inner panel 100 are formed of a single material But it is used when a part of them is distinguished from the rest by materials of different colors or different kinds of materials (thermoplastic plastic, thermosetting plastic, fiber reinforced plastic, etc.) having different properties. And is used as a core material of the inner panel 100. [0052]

That is, by way of example, the sealing insert member 150 includes a window frame portion 110 that is injection molded with a fiber reinforced plastic (in particular, carbon fiber reinforced) as in the embodiment shown in Figs. 1, 3, (120) and the door trim panel (130), which are integrally formed with the window frame (110), the body part (120) and the door trim panel (130) So that the inner panel 100 is formed.

Since the sealing insert member 150 is inserted into the mold and integrally formed with the inner panel 100 as described above, it is possible to prevent the mixing of the different color or different materials during injection molding, and the window frame 110, So that mutual coupling between the dichromatic or heterogeneous materials forming the door 120 and the door trim panel 130 can be made more robust.

1, 3, and 5, the sealing insert member 150 according to the embodiment of the present invention includes a connection portion 152, A protrusion coupling portion 156, a sealing portion 158, and the like.

At this time, the connection part 152 is formed by a part of the window frame 110, the body part 120 and the door trim panel 130, for example, of carbon fiber-reinforced plastic and the remainder is formed of a thermoplastic plastic A plurality of components, each of which is formed in a plate shape and which will be described below, are formed.

The contact engaging portion 154 is formed so as to protrude from both sides of the connecting portion 152 so as to fix the connecting portion 152 at the time of inserting into the metal mold and to be in contact with a portion made of different material It suffices that it is a pair of constituent elements which can be fitted and fixedly supported by the insert part locator 223 formed in the stationary side mold 220 shown in Fig.

The protruding engaging portion 156 is a pair of constituent elements protruding from the opposite side of the contact engaging portion 154 with respect to the connecting portion 152 and partially and remotely located in a part and the inside of the remainder, It is sufficient that the protruding shape is located so as to be located inside the part and the rest as shown in the figure.

The sealing portion 158 is made of a thermoplastic elastomer (TPE) and is made of a thermoplastic elastomer (TPE) to prevent mixing of dissimilar materials. The sealing portion 158 is located inside the space formed by the protruding engaging portion 156 and the connecting portion 152 .

5B, 5C and the like, when the movable mold 210 and the stationary mold 220 are engaged with each other (mold closing step), the sealing portion 158 is formed in the movable mold 210 The window frame 110 and the body 120 are completely shielded by being pressed and elastically deformed by the shielding protrusion 212 and being formed of a different material (or a dichroic material). Thus, the molten plastic of the dissimilar material (or the dichroic material) injected to form the window frame 110 and the body 120 is not mixed with each other.

The sealing insert member 150 as described above includes the window frame 110 and the body 120 which are injection-molded on the entire surface except for the portion of the stationary-side metal mold 220 that is fitted to the insert portion locator 223, So that the integrated inner panel 100 can be formed. [0050] As shown in FIG.

At this time, the window frame 110 and the body 120 (and the door trim panel 130, the remainder), as well as the sealing insert member 150 according to the modified embodiment of the present invention shown in Figs. 5A to 5D, (Or a dichroic material) to be injected into the mold during the injection process is introduced into at least one of the contact coupling portion 154 and the protrusion coupling portion 156 so that the molten plastic can be more firmly contacted with the molten plastic A plurality of inflow holes 159 can be formed through.

The cross section of the inlet hole 159 is defined by the window frame portion 110 and the body portion 120 (and the door trim panel 130, the rest) as the reference (center) of the sealing insert member 150 (↓ ↑) or trapezoidal shape, which is a shape capable of restraining or preventing separation in a moving direction.

The sealing insert member 150 constructed as described above is formed by injection molding a thermoplastic resin (PP or thermosetting plastic) and a body portion 120 which is injection-molded by fiber reinforced plastic (particularly carbon fiber reinforced) The door trim panel 130 may be arranged in a corresponding shape in a region where the door trim panels 130 are brought into contact with each other to form an integral body together with the body 120 and the door trim panel 130.

The sealing insert member 150 is formed by integrally molding the window frame portion 110 which is injection molded with one color thermoplastic resin (PP or thermosetting plastic) and another one color thermoplastic resin (PP or thermosetting plastic) The inner panel 100 may be formed in a region where the body 120 and the door trim panel 130 are in contact with each other so that the inner panel 100 is formed together with the window frame 110, the body 120, and the door trim panel 130 .

The sealing insert member 150 is formed by injection molding or injection molding so as to have a shape corresponding to each of the positions to be inserted including the connecting portion 152, the contact engaging portion 154, the protruding engaging portion 156 and the inflow hole 159, And the sealing part 158 may be separately bonded (attached or coated) after the metal plate material is press-worked.

( The sealing insert member  Included hybrid Inner panel )

The hybrid inner panel 100 according to the present invention is a hybrid inner panel 100 having an automobile door 100 integrally injection-molded so as to intermix plastics to be addressed and core members (the above-described sealing insert member 150, metal frame, etc.) (Inner side of a car) panel. In this case, the productivity of the automobile manufacturing is improved and the production cost is reduced by reducing the number of working hours compared to the assembling process of the conventional metallic inner panel 10, , And to meet various physical properties required for each composition

The hybrid inner panel 100 according to the present invention is disposed on the inner side of the outer panel 20 (see Fig. 6) The body frame 120, the door trim panel 130, the reinforcing frame 140, and the sealing insert member 150, as shown in FIGS. 1 to 3, , And may further include a polyurethane layer 160. [

The hybrid inner panel 100 according to the present invention having the above-described configurations is formed of a hybrid material, that is, a hybrid material or a two-material material, as well as a single material by a series of manufacturing processes using the corresponding mold system . ≪ / RTI >

Hereinafter, each of the above-described configurations will be described in detail.

The window frame 110 is a component that is housed in an inner space S between the outer panel 20 and the inner panel 100 and is opened and closed by a door glass (not shown) that reciprocates up and down. In the embodiment, injection molding is performed in a triangular shape or a trapezoid shape. However, the shape of the window frame may be varied depending on the type of vehicle or the structure of the door.

As shown in FIGS. 1 and 3B, the first reinforcing part 141 is inserted into the window frame 110 so that the inner space S, that is, the outside direction of the vehicle (opposite the Y axis arrow) A first protruding insert portion 112 which is an injection portion protruding from the first protruding insert portion 112 may be positioned.

At this time, a plurality of reinforcements 116 (I-shaped barrier ribs) for increasing the rigidity may be formed repeatedly around the first protruding inserts 112 at predetermined intervals, and may be formed along the first protruding inserts 112 A plurality of reinforcing portion locator holes H may be formed repeatedly spaced apart from each other by a predetermined distance.

Herein, the reinforcing portion locator hole H is a reinforcing portion having a plurality of spaced apart reinforcing frames 140 spaced from each other in the fixed side mold 220 so that the reinforcing frame 140 is inserted into one side of the inside of the window frame portion 110 and the body portion 120, And is formed by the sub locator 222 (U-shaped piece type).

The material used for injection molding of the window frame 110 may be any one of thermoplastics, thermosetting plastics, and fiber reinforced plastics (in particular, carbon fiber reinforced plastics), and the properties , Impact resistance, heat resistance, fracture characteristics, etc.).

The body 120 is formed at a lower end of the window frame 110 to form an inner body of the door for an automobile and forms an inner space S with the outer panel 20, And a hollow portion 121 covered (closed) by a molding is provided at a central portion.

The body portion 120 according to the embodiment of the present invention is configured such that the inner space S can be formed in relation to the outer panel 20 (see Fig. 6) on the metal plate as shown in Figs. 1 and 3A (Y-axis arrow direction) of the vehicle.

A door glass for opening and closing the window frame 110 is housed in the interior space S formed in the recessed shape, and an operation module or other convenience device module for reciprocating the door glass, a side beam for reinforcing the side of the door, .

The hollow 121 formed at the center of the body 120 to communicate with the internal space S may be formed by connecting or disconnecting various devices stored in the internal space S with devices installed in a door trim And is formed as a predetermined hole in the body 120 of the metal inner panel 10, which is composed of a number of parts, for smooth replacement and repair of various apparatuses.

Such a conventional hollow 121 is sealed to a door trim panel 130 made of a metal sheet material through a plurality of engaging means (such as bolts and nuts) and a packing member (manually operated by an operator). 6)

However, the hollow 121 according to the present invention is formed at the time of injection molding of the body 120 and the corresponding region is covered (filled) by the injection molding of the door trim panel 130 to be described later, .

Since the hollow 121 and the door trim panel 130 are jointly formed through injection molding, the assembly process of the inner panel 100 can be simplified, productivity can be improved, and production cost can be reduced.

1 to 3, the second and third reinforcing portions 142 and 143 are inserted into the body portion 120 so that the inner space S, that is, the outer direction of the vehicle And the second and third protruding insert portions 122 and 124 protruding from the first and second protruding insert portions 122 and 124 are formed on the opposite sides of the first and second protruding insert portions 122 and 124, .

The material used for injection molding of the body 120 may be any one of thermoplastics, thermosetting plastics, and fiber reinforced plastics (particularly, carbon fiber reinforced plastics) as in the case of the window frame 110 described above. (Strength, impact resistance, heat resistance, fracture characteristics, etc.) required for the door.

The door trim panel 130 is formed by injection molding of the body 120 and is formed in a plate-like configuration in which the hollow 121 is covered with (filled) Element.

The door trim panel 130, which faces the inside of the automobile door (interior side of the automobile), is coupled with a door trim on which an arm switch of an occupant or an operation switch for opening and closing operation of a door glass is mounted, An operation module for reciprocating the door glass or other convenience module may be provided on the other surface of the door trim panel 130 facing the door (the opposite side of the Y-axis arrow).

A plurality of reinforcing bars or concavo-convex structures may be repeatedly formed in the plate-like door trim panel 130 so that the self-rigidity can be structurally increased.

The material used for the injection molding of the door trim panel 130 may be any of thermoplastics, thermosetting plastics, and fiber reinforced plastics (particularly, carbon fiber reinforced plastics), as well as the window frame 110 and the body 120 described above. And can be selected according to properties (strength, impact resistance, heat resistance, fracture characteristics, etc.) of the physical properties required for the automotive door.

The window frame 110, the body 120 and the door trim panel 130 described above can be formed of any one of thermoplastic plastic, thermosetting plastic and fiber reinforced plastic by a series of processes using the corresponding mold system, And can be integrally injection-molded.

However, the window frame 110, the body 120, and the door trim panel 130 may be formed by injection molding of an overmolding method to realize a lightweight and rigid body required for the automotive door, It is preferable to fabricate a reinforced plastic, and a specific manufacturing process related thereto will be described later.

The window frame 110, the body 120 and the door trim panel 130 may be formed of a combination of two or more of thermoplastic plastic, thermosetting plastic and fiber reinforced plastic by a series of processes using the corresponding mold system It is needless to say that they can be integrally injection-molded with a heterogeneous material (or a dichroic material).

That is, as in the embodiment of the present invention shown in FIGS. 5A to 5D, the window frames 110, which are required to have impact resistance or predetermined elasticity, are formed of carbon fiber-reinforced plastic, The body 120 and the door trim panel 130, which are required to be firmly fixed and protected, such as various operation modules or other convenience module, can be formed of thermoplastic plastic (or thermosetting plastic) having excellent mechanical rigidity .

The window frame 110 and the door trim panel 130 can be integrally injection-molded in a single mold in such a manner that two or more different kinds of materials are clearly and neatly partitioned by the window frame 110, the body 120, A sealing insert member 150 may be provided in an area where the main body 120, the body 120 and the door trim panel 130 are in contact with each other to prevent mixing of the different kinds of materials and to bond mutually different materials. Such a sealing insert member 150 has been described in detail above, and a description thereof will be omitted.

The reinforcing frame 140 is a lightweight, high-rigidity metallic component that is inserted into one side of the inside of the body 110 and the inside of the body 120 by injection molding using plastic as a material, An elliptical shape, a polygonal shape, a star shape, or the like.

Since the metallic reinforcing frame 140 is provided inside the window frame 110 and the body 120, which are plastic extrusions, the rigidity of the inner panel 100 itself can be greatly enhanced.

The reinforcing frame 140 according to the embodiment of the present invention is preferably formed into a hollow circular pipe shape as shown in FIGS. 1 and 3B so as to achieve both rigidity and weight reduction. However, It is also possible to produce a circular pipe shape filled with hollows.

At this time, the overall shape of the reinforcing frame 140 may be variously bent according to the shape of the frame such as the window frame 110 and the body 120, and may be changed by the molten plastic injected for injection molding A plurality of embossing protrusions or perforations may be formed on the outer circumferential surface to enhance the adhesive strength.

More specifically, as shown in FIGS. 1 to 3B, the reinforcing frame 140 includes a first reinforcing portion 141, a second reinforcing portion 142, a third reinforcing portion 143, and the like .

The first reinforcing part 141 is inserted in a ring shape along the window frame part 110 to maintain the shape and reinforce the shape of the window frame part 110 made of a plastic injection molding material and to insert the inner core material of the window frame part 110 through injection molding As a result, the window frame 110 has a triangular shape or a trapezoidal shape corresponding to the shape of the window frame 110.

The second reinforcing portion 142 is inserted in a ring shape along the rim portion of the body portion 120 to maintain the shape and rigidity of the body portion 120 formed of the plastic injection molded body and the upper end portion thereof is inserted into the first reinforcing portion 141 and is formed as an inner core of the body part 120 through injection molding. The body part 120 has a rectangular shape corresponding to the shape of the body part 120.

The required rigidity can be secured to the window frame 110 and the body 120 through the first and second reinforcing portions as described above. However, when the side of the body 120 (120 The third reinforcing portion 143 may be further provided to increase the rigidity of the body portion 120 and allow the door trim to be more firmly supported and coupled to the body portion 120. [

The third reinforcing portion 143 according to the embodiment of the present invention is formed by inserting the insert 142 in a U shape along the edge region of the hollow 121 from the inside of the second reinforcing portion 142 as shown in FIGS. 1 and 3B, So that the inner core of the body 120 is doubly formed together with the second reinforcing portion 142 through injection molding.

The reason why the third reinforcing portion 143 is formed in a U-shape that opens upward rather than in a ring shape is that all four sides of the body portion 120 having a generally rectangular shape are not shifted to either side, So as to be reinforced to an equal level by the reinforcing frame 140 arranged.

Even if an external impact is applied to one side of the body part 120 due to the uniform reinforcement of the body part 120, the impact can be dispersed and absorbed throughout the body part 120 without being deformed or broken first, Excessive deformation or breakage of the trunk portion 120 can be effectively prevented.

In order to ensure the rigidity corresponding to the body 120 to be doubly reinforced by inserting the third reinforcing portion 143 together with the second reinforcing portion 142, The reinforcing portion 141 may be formed to have a larger cross-sectional diameter than the second and third reinforcing portions 142 and 143.

The inner panel 100 may have a rigidity corresponding to the rigidity of the window frame 110 and the body 120 by increasing the diameter of the first reinforcing portion 141 that is uniformly inserted into the window frame 110, The overall stiffness of the stiffener can be balanced.

The reinforcing frame 140 may include a window frame 110 formed by injection molding in the form of a thin plate and an area in which the reinforcing frame 140 inserted in the inside of the body 120 is located, Protruding from one side or both sides of the body 110 and the body 120.

However, the reinforcement frame 140 according to the embodiment of the present invention is formed in such a manner that an area of the reinforcement frame 140 protruding due to the reinforced frame 140 inserted in the window frame 110 and the body 120, As shown in the enlarged portion of FIGS. 2A and 3B or the like, so as not to be easily recognized or seen on the side of the inner space S.

The reason why the reinforcing frame 140 is eccentrically limited to the inner space S, that is, to the outside of the automobile is that the reinforcing frame 140 is eccentrically limited to the interior space S, So that the rigidity can be easily increased by forming reinforcing bars 116 and 126 (I-shaped barrier ribs) as described later.

1 to 3, the first reinforcing part 141 and the second reinforcing part 142 are formed in a protruding shape due to the reinforcing frame 140 inserted in the window frame 110 and the body 120, The first protruding insert portion 112 of the window frame 110 and the second protruding insert portion 122 of the body 120 surrounding the second reinforcement portion 142 are formed in the shape of a cylinder, And a third protruding insert part 124 surrounding the third reinforcing part 143, respectively.

As shown in the figure, each of the first, second, and third protruding inserts 112, 122, and 124 may have a plurality of reinforcing bars 116, 126 and I-shaped barrier ribs, 116, and 126 may be modified in various forms according to the structure around the first, second, and third protruding inserts 112, 122, and 124.

At least one of the body 120 and the door trim panel 130 may include a polyurethane layer 160 integrally formed by injection molding of an in-mold coating method on a surface facing the internal space S. .

Such a polyurethane layer 160 may be generated during operation of an operation module for reciprocating door glass or other convenience module provided between the inner panel 100 and the outer panel 20, 20 can be additionally formed after the injection molding of the window frame 110, the body 120 and the door trim panel 130, as described below, have.

A process of fabricating the hybrid inner panel 100 according to the embodiment of the present invention as described above using the corresponding mold system will now be described with reference to FIGS. 4 and 5. FIG.

4 and 5A, a core to be used for injection is prepared to manufacture the hybrid inner panel 100 according to the embodiment of the present invention (S100)

Here, the core material is a member to be inserted into the inside of the mold (the movable mold 210 or the stationary mold 220) for imparting physical properties or functionality of the inner panel 100, A reinforcing frame 140 for reinforcing the rigidity of the inner panel 100, a sealing insert member 150, and the like.

The carbon fabric 114 is a core material required to form the window frame 110 requiring impact resistance or predetermined elasticity from carbon fiber reinforced plastic and is provided between the movable mold 210 and the stationary mold 220 The molten plastic is cut to correspond to the shape of the window frame 110 before being interposed, and then heated to a predetermined temperature so as to facilitate impregnation of molten plastic to be injected during injection molding.

At this time, the carbon fabric 114 may be prepared in a provisional form using a separate press apparatus corresponding to the outer shape of the window frame 110, (See Fig. 5 (a)). In this case,

The reinforcing frame 140 is formed of a lightweight, high-rigidity aluminum alloy or the like and is formed into a shape corresponding to the first reinforcing portion 141, the second reinforcing portion 142, and the third reinforcing portion 143, (See Fig. 5 (b)).

In the case of the inner panel 100 in which the window frame portion 110 and the body portion 120 (and the door trim panel 130) are injection-molded simultaneously using different materials (or two-color materials) like the embodiment of the present invention, As described above, the sealing insert member 150, which is inserted into the mold and is integrated with the inner panel 100, is prepared through a separate injection molding process as described above. Of course, the sealing insert member 150 may be formed of a metal material, if necessary, through a press apparatus (see Fig. 5 (c)).

Next, as shown in FIGS. 4 and 5B, in order to manufacture the hybrid inner panel 100 according to the embodiment of the present invention, the above-described various core members are respectively inserted into the in-mold position, 210 and the stationary side mold 220 are engaged with each other (S200).

That is, through the operator or the automated robot arm, the carbon cloth 114 pretreated as described above is positioned to correspond to the window frame 110, and the manufactured first, second, and third reinforcing portions 141, 142, And the manufactured sealing insert member 150 is seated on a plurality of reinforcement locators 222 (U-shaped segment type) spaced apart from the insert mold locator 220 (S210). ≪ RTI ID = 0.0 >

At this time, a separate locator (not shown) is also provided in the movable mold 210 so that the first, second and third reinforcing portions 141, 142 and 143 can be more firmly fixed in the mold, As shown in FIG.

The operator or the mold system moves the movable mold 210 or the stationary mold 220 so that the molds are engaged with each other to be closed (mold closing) (S220)

At this time, the shielding protrusion 212 formed on the movable mold 210 in the mold closing state of the mold elastically deforms the sealing portion 158 of the sealing insert member 150 and presses the sealing portion 158 to a predetermined depth, The window frame 110 and the body 120 formed by injection molding are formed in a space (cavity) completely shielded from each other.

Next, as shown in Figs. 4 and 5C, the mold system controls the molten plastic to be injected into the cavity through which the window frame 110 is formed through the first nozzle 224, The inner panel 100 according to the present invention is formed by controlling the molten plastic to be injected into the cavity to form the body 120 (and the door trim panel 130) )

At this time, even if molten plastics having different colors or different characteristics are simultaneously injected through the first nozzle 224 and the second nozzle 226, they are pressed by the shielding protrusion 212 formed on the movable mold 210 Both sides of the window frame portion 110 and the body portion 120 (and the door trim panel 130) can be injection-molded in a clear and neatly distinguished form without being mixed with each other due to the sealing portion 158 in the state. (S310)

In addition, the mold system may further include at least one of the body 120 and the door trim panel 130 so that the polyurethane layer 160 for sound absorption and absorption is integrally formed by injection molding of the in-mold coating method The surface on which the polyurethane layer 160 is formed may be a surface on which the body 120 and the door trim panel 130 face the internal space S. In this case,

Herein, the in-mold coating type injection molding is a complex molding technique based on an injection molding technique, which is also called in-mold coating. Unlike the prior art in which an injection product is taken out and then painted separately, Is injected to cure the coating material on the surface of the injection product to produce a beautiful and functional injection product.

5C, the mold system moves the movable mold 210 (or the stationary mold 220) by a thickness of the polyurethane layer 160 to be coated, The polyurethane layer 160 may be formed on one side of the body 120 and the door trim panel 130 by controlling the injection of the molten polyurethane into the cavity formed by the movement of the movable mold 210 It is.

At this time, since the contact engaging portion 154 of the sealing insert member 150 is not completely separated from the insert portion locator 223, the molten polyurethane can be prevented from flowing into the cavity formed on the side of the window frame portion 110 .

4 and 5D, the mold system includes the movable mold 210 (or the stationary mold 220) for taking out the inner panel 100 according to the completed embodiment of the present invention, Is moved (opened) to the opposite side of the direction in which the stationary-side mold 220 is placed (S400)

Since the series of injection processes are sequentially performed under the single single mold system as described above, it is possible to use a material of a different color or different type (carbon fiber reinforced plastic and thermoplastic Plastic, etc.) can be integrally formed in one inner panel 100 at the same time.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, such modifications or variations should not be individually understood from the technical spirit and viewpoint of the present invention, and modified embodiments should be included in the claims of the present invention.

10: conventional metallic inner panel 20: outer panel
S: Inner space H: Reinforcement locator hole
100: Hybrid inner panel
110: window frame portion 112: first protruding insert portion
114: carbon fabric 116,126: reinforced flesh
120: body portion 121: hollow
122: second protruding insert part 124: third protruding insert part
130: Door trim panel
140: reinforcing frame 141: first reinforcing part
142: second reinforcing portion 143: third reinforcing portion
150: sealing insert member 152:
154: contact coupling part 156:
158: sealing part 159: inflow hole
160: polyurethane layer
210: movable mold 212: shielding projection
220: stationary-side mold 222: reinforced portion locator
223: insert locator 224: first nozzle
226: second nozzle 228: third nozzle

Claims (7)

The inner panel for a door including a window frame portion, a body portion and a door trim panel, which is disposed inside the outer panel for the automotive door and is combined with the door trim,
When a part of the window frame, the body part, and the door trim panel and the rest are integrally formed in the mold with the plastic of a different color or different material,
Wherein the sealing member is inserted into an area in which the part and the rest are in contact with each other so as to prevent mixing of dichroic or heterogeneous materials, and to bond the part and the rest to each other and integrate with the inner panel. The method according to claim 1,
The sealing insert member
A plate-like connection portion disposed along an area where the part and the rest touch each other;
A contact engaging portion protruding from both sides of the connecting portion so that the connecting portion is fixed at the time of inserting into the metal mold,
A protruding engaging portion protruding from the opposite side of the contact engaging portion with respect to the connecting portion, And
And a sealing part provided in the space formed by the protruding engaging part and the connecting part to prevent mixing between the different colored or heterogeneous materials. 3. The method of claim 2,
Wherein at least one of the contact-engaging portion and the projecting-
And a plurality of inflow holes through which molten plastic of a different color material or different materials are introduced into the mold are respectively passed through the through-holes. The method of claim 3,
Wherein the cross-
Wherein the sealing insert member is formed in a wedge shape or a trapezoid shape so as to restrain or prevent separation of the part and the remainder in a direction away from each other with respect to the sealing insert member. An inner panel for a door, which is disposed on the inner side of an outer panel for a vehicle door and is joined to a door trim,
A window frame portion opened and closed by a door glass;
A body portion formed at a lower end portion of the window frame portion, the body panel having an outer panel and an inner space, the hollow portion being provided at a central portion thereof;
A door trim panel formed to cover the hollow and coupled with the door trim; And
When a part of the window frame, the body part, and the door trim panel and the rest of the window frame, the body part, and the rest of the window frame, the body trim part, and the rest of the window frame part are integrally formed in the mold with the dichroic or different kind of plastic, And a sealing insert member which is integrally joined to and interconnects said part and the remaining liver. 6. The method of claim 5,
The above-
Formed by carbon fiber-reinforced plastic by injection molding of an overmolding method,
The remainder,
Which is formed by thermoplastic plastic by injection molding,
Wherein the part and the remainder made of different materials are integrally formed in a single mold. The method according to claim 6,
Wherein at least one of the body portion and the door trim panel comprises:
Wherein a polyurethane layer for absorbing and sucking is integrally formed by injection molding of an in-mold coating method on a surface facing the inner space.

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