KR200164787Y1 - A variable insert molding parts - Google Patents

Abstract

The present invention relates to a molding that is coupled to the rim of a vehicle upper door body, and more particularly, a drip rail molding (1) and a rear piece drip rail molding (2) formed by roll forming and press insert molding. The present invention relates to a one-piece molding 20 in which a conventional molding part made by assembling a piece of pieces is united by press molding and insert injection.

Further, conventionally, after attaching the drill rail 7 for attaching the drip rail molding to the body frame 6 or forming the rear piece drip rail molding assembly hole, the drip rail and the molding, the body and the rear piece drip rail molding Clips (5, 10) for mounting the separately manufactured and assembled to the molding (1, 2), but in the one-piece molding 20 according to the present invention, the clip 16 was molded integrally with the molding by insert injection As a whole, it is characterized by one piece molding, in which several pieces of parts are integrated and the process is simplified.

Description

Integral Variable Insert Molded Parts {.}

The present invention relates to a molding that is coupled to the rim of an upper body of a door of a vehicle, and more specifically, a conventional molded part, which is formed by assembling a molded part by roll forming, press insert molding, etc., is integrally manufactured by insert injection molding. It relates to one molding part.

As shown in FIG. 1, the upper part of the side door of the automobile is a component used to prevent leakage and wind noise and to improve the appearance of the vehicle by filling a gap between the vehicle body and the door of the automobile, and molding the automobile. The two components, DRIP RAIL MOLDING (1) and REAR PIECE DRIP RAIL MOLDING (2), are manufactured separately and assembled into a vehicle.

The drip rail molding 1 is manufactured through 27 kinds of processes, and a schematic process sequence is as follows (see FIG. 2).

Apply bonding bond to one side of SUS coil bonded to PVC → Dry → Roll molding to form SUS coil into molding shape in 12 steps → Extrude (4) and apply PVC to roll formed SUS coil molding surface → Cooling → Cut to required molding length → Stretch bending → Pressing (Front end → End angle cut → Notch → Rear end cut) in the same manner as the side flam shape of the body for mounting on the vehicle → Rear piece drip High speed saw blade cutting at the end that is assembled with rail molding → Adhesive bond is applied to the injection part to finish all the end parts of the vehicle → PVC injection at the end injection part (Injection by inserting the molding end) → Drip rail molding (1 It is a part manufactured in the order of assembling the clip 5 for assembling with the vehicle body on the inner side of the clip (the clip is injection molded, processed, and then assembled into a drip rail molding).

In order to mount the drip rail molding prepared in this way to the body frame 6, a separate drip rail 7 is manufactured and then attached to the body frame by spot welding, and the like, and the conventional drip rail molding 1 is formed by roll forming and Since the drip rail 7 is manufactured by the extrusion process, it is necessary for the assembly of the drip rail molding and is included in the vehicle body manufacturing process.

In addition, the rear piece drip rail molding 2 is subjected to about 21 processes, a schematic process sequence is as follows (see FIG. 4).

Press molding SUS coil into molding shape (8) → Attach a protective tape to the surface of SUS coil molding (prevent surface scratching during movement) → Ultrasonic cleaning of the molding surface after removing the protective tape → Drying → When injecting PVC with SUS Adhesive bonding to molding surface to facilitate bonding → Drying → Secondary bonding to reinforce adhesive strength → Drying → High frequency preheating with high frequency preheater to preheat adhesive → Injection molding of PVC to molding surface (9) → Unnecessary injection Gate removal and finishing → Protective tape attachment → Assembly of clip 10 using assembly-only jig → Drip rail molding and joint spot welding for assembly to date.

The clip attached to the inner surface of the rear piece drip rail molding 2 manufactured as described above is inserted into an assembly hole previously formed in the body frame 6 to mount the rear piece drip rail molding on the body frame.

However, in the manufacture of such molding, conventionally, it is dualized into press insert molding and roll forming molding, and its method is complicated and diverse, so that the manufacturing cost is increased, as well as the wind caused by the gap generated in the joint between each component when mounted on the vehicle. There were noises and defects in appearance, and there was a high possibility of foreign substances being caught in the gap during washing (particularly during automatic washing).

In addition, the drip rail molding is manufactured by rolling a SUS coil and extruding PVC on its surface, but the rear piece drip rail molding is manufactured by pressing a SUS coil and injecting PVC on the surface thereof, thereby forming the SUS coil. The color of the molding surface was changed due to the difference in the process and the difference in the raw materials of PVC, which are divided into extrusion and injection.

In addition, in order to assemble the drip rail moldings to the body frame, there was also an inconvenience of attaching a separate drip rail to the body frame by spot welding.

The present invention has been made to solve the problems as described above, and provides a variable integral molding produced by molding a molded part made by assembling a plurality of parts manufactured by various methods by a press molding and insert injection.

1 is an installation state diagram of a side door upper molding of a conventional vehicle,

2 is a cross-sectional view taken along line A-A of FIG.

Figure 3 shows only the SUS portion of the cross section of Figure 2

4 is a cross-sectional view taken along line B-B of FIG. 1;

Figure 5 shows only the SUS portion of the cross section of Figure 4

6 is an installation state diagram of the side door upper molding of the vehicle according to the present invention,

7 is a cross-sectional view taken along the line A-A of FIG.

FIG. 8 shows only the SUS portion of the cross section of FIG.

(Explanation of reference numerals)

1 ... drip rail molding, 2 ... rear piece drip rail molding,

5,10,16 ... clip, 6,19 ... body frame,

7.Drip rail, 3,8,11 ... SUS coil,

4,9 ... PVC, 14 ... PP (with glass fiber or TALC) or TPE,

17..TPE or PP (with NYLON or ELASTOMER) or PVC, 20 ... integral molding.

* PP = POLYPROPYLENE RESIN

Hereinafter, with reference to the drawings will be described in detail the configuration and operation of the integral variable insert molding according to the present invention.

The present invention, as shown in Figure 6, the molding is integrally manufactured to be mounted on the vehicle, the manufacturing sequence is as follows (see Figure 6 and 7,8,9).

On one side, the adhesive is applied in advance, and on the other side, the SUS coil 11 with the surface protection tape is press-molded (see Fig. 7) into the overall shape (one piece) of the molding. It is a blanking process of general press. → slightly bend (13) both edges of the flat press-formed SUS coil (11). It refers to a general press forming process → After mounting the SUS coil 11 coated with an adhesive to an injection mold, the primary insert injection molding 15 is carried out with a PP 14 on the inner side, and the clip 16 is also used. At the same time it is shaped on the injection mold to be integrally molded. At this time, the shape of the clip is shaped by using a working core of a general injection mold, and the adhesion between SUS and PP is performed on the inner surface of the SUS by the temperature of the injection molding material (PP) (about 200 to 240 ° C). The bond melts and bonds with the injection material. In addition, the material used here includes PP containing GLASS FIBER (glass fiber) or TALC (talc), or PP containing ELASTOMER (natural, synthetic rubber), etc. (see Fig. 8). The first injection molded product 14 on the surface is seated on the second injection mold (INSERT) and then the second injection molding (18). In this case, PP, which is the same series as the primary molding material, is used as the molding material. Generally, materials of the same series (here, PP and PP are combined) are easy to be bonded by injection heat and have strong adhesive strength without additional bonding. (See Fig. 9) → The integral molding 20 is manufactured in the order of finishing with finishing and processing. Due to the characteristics of the product, the material used for the first injection should be hard. Therefore, PP is used as the RESIN and the strength reinforcing material such as glass fiber is used.In the case of the second injection molding, the material used should be soft and soft, so the PP is the resin. The one to which etc. were added is used.

Therefore, the integral molding according to the present invention is covered with a PP 14 layer formed integrally with a plurality of clips 16 in the longitudinal direction on one side of the SUS 11, with both edges slightly bent (press forming). In addition, both the edges of the PP layer and the SUS 11 or another PP 17 layer is covered on the front surface except the SUS to be exposed, so that a plurality of holes 21 are formed in the body frame 19 in advance. As the clip 16 is inserted, the integrated molding 20 is mounted on the vehicle body frame.

Therefore, when the integral molding is manufactured by the above method, the whole molding can be composed of one piece, and the manufacturing method is also simplified into two types of press molding and insert injection, and further, a clip for mounting on the body frame is separately provided. It is possible to form an integral molding by the press molding and insert injection, without having to configure and assemble to the molding.

The integrated variable insert molding consisting of the above-mentioned objects and configurations can be manufactured as a single piece in which the parts produced in conventional pieces (two pieces or more) are integrated, thus simplifying the process (roll forming, multiple bonding) Process, extrusion molding, drip rail fabrication and welding of the body, elimination of processes such as injection molding and assembly of the clip) and appearance, etc., and the assembly clip for assembling the molding to the body is integrated into the molding. It is possible to prevent the separation easily, and the color differentiation between the individual pieces that were produced when assembling a conventional molding made of two or more pieces and manufactured by the dual process (roll forming and press molding, extrusion molding and injection molding, etc.) Problems such as color separation, assembly step, etc. can be improved by integrating into one piece and manufacturing by a single method.

Claims (6)

In the molding mounted on the door upper frame of the vehicle, Adhesive-coated on one side and surface-protected TAPE on the other side of the SUS coil 11 is press-molded (12) to the overall shape of the molding and slightly bent both edges of the press-formed SUS coil (11) After the quasi (press forming process), the first insert injection molding (15) is made of PP 14 composited on the inner surface of the SUS coil 11 to which the adhesive is applied by inserting the injection mold, but the clips 16 are also integrated at the same time. SUS coil 11 with PP 14 attached by primary insert injection molding is inserted into another injection mold, and then PP (17) compounded differently on the skin (except the exposed SUS surface). A variable integrally molded part 20 produced by secondary insert injection molding 18 and finished by finishing and processing. In the molding mounted on the door upper frame of the vehicle, The composite PP 14 layer formed by integrally forming the plurality of clips 16 on the front surface is covered on one side of the SUS coil 11 whose both edges are bent by the method of claim 1. Integral variable insert molding part, characterized in that formed in a shape that is covered with another compounded PP (17) layer on both edges of the SUS coil (11). The method of claim 2, An integrally variable insert molding component, characterized in that the integral molding (20) is mounted to the vehicle body frame while the clip (16) is inserted into a plurality of holes (21) previously formed in the vehicle body frame (19). The method of claim 1, Molded parts that can be manufactured in one piece or in multiple pieces. The method of claim 1, Molding parts, characterized in that the primary injection molding material contains ELASTOMER, GLASS FIBER, TALC, etc. in the PP, and the secondary injection molding material contains ELASTOMER, etc. in the PP. The method of claim 1, Adhesion between the SUS and the primary injection material during the primary injection is achieved by melting the bond applied in advance to the SUS by the hot temperature (about 205 ° C ~ 245 ° C) of the material during injection, and the secondary injection material and the primary injection A molding part, characterized in that the material is naturally bonded by heat during injection using the same series of materials (POLYPROPYLENE).