JPS59192547A - Manufacture of weatherstrip for vehicle - Google Patents

Abstract

PURPOSE:To make it possible to obtain a glass guide as designed without producing burr or deforming the glass guide, by forming a cavity at a point where the glass guide is to be molded, pressing other parts than said point to be secured with elastic deformation prevented, and injecting a material in the softened state into the cavity to mold the glass guide. CONSTITUTION:A weatherstrip main body 21 is produced by extrusion, is placed in forces, and a cavity 27 is formed at the forward end of the outer lip 23 by a top force 25 and a core 26. An olefinic resin is injected via an injection port 28 into the cavity 27. Since other parts of the weatherstrip main body 21 than the glass guide molding section 23a are secured by a pressing and housing section 30 with elastic deformation prevented, the injection pressure would not deform or move the glass guide molding section 23a toward the pressing and housing section 30 and only the cavity 27 having a prescribed shape is filled with the olefinic resin. A weatherstrip 20 for vehicles that has at the outer lip 23 a glass guide 24 as designed can be obtained.

Description

[Detailed Description of the Invention] The present invention provides a seal between the door window glass and the vehicle body. The present invention relates to a method of manufacturing an n-th order single-use weather strip in which a glass guide is provided on an outer lip that projects outward from the periphery of the door window glass when the door window glass is closed.

-ff, like a hardtop car? In the case of a vehicle with a door window, since the door window glass comes into direct contact with the opening edge on the vehicle body side, a weather strip is attached to the opening edge on the vehicle body side, and the weather strip protects the door window. It is designed to seal between the glass and the car body. For example, the weather strip shown in FIG. 11-This weather strip 1 has an inner lip 3 located on the inside of the vehicle (right side in the figure) with respect to the periphery of the door window glass 2 when the door window glass 2 tray is closed, and the door window glass 2 tray. An outer lip 4 protruding outward from the periphery of the windshield 2? We are prepared. The periphery of the door window glass 2 is located at a branching portion 5 between the inner lip 3 and the outer lip 4, thereby sealing the interior and exterior of the vehicle. Furthermore, six glass guides protruding further from the outer lip 4 are provided at appropriate locations on the outer lip 4.
When the door window glass 2 is closed, the glass guides 6 of the above-mentioned branch part 5 hold the two glasses in a predetermined position.
At the same time, the sealed door window glass 2 is pulled outward when driving at high speed, causing the upper end of the glass 2 to protrude outward from the outer lip 4? It is preventable. In the figure,
Reference numeral 7 denotes a retainer (not shown) attached to the edge of the vehicle body opening for fixing the weather strip 1.

In this method of manufacturing the weatherstrip 1, the weatherstrip main body 1a, which is not covered with the glass guide 6, is formed to have a uniform cross section by extrusion molding. 4, six glass guides are fitted into the cutout portion 8, and the six glass guides are attached to the outer lip 4 with an adhesive.

However, in the conventional weather strip IK manufactured by such a manufacturing method, the glass guide 6 is bonded with an adhesive as described above, and in particular, the door window glass 2 is in contact with the glass guide 6. There is an inconvenience that the contact N part on the side to be deflected is peeled off by the rubbing of the core door window glass 2, and the door window glass 2r cannot be smoothly guided to the branching part 5. Furthermore, even in the manufacturing method itself, the glass guide 6r outer lip 4
In order to attach the glass guide 6 to the outer lip 4, a step of molding the glass guide 6 itself, a step of forming eight notches in the outer lip 4,
a step of bringing the glass guide 6r into contact with the notch 8;
is required, glass guide 6? There was a problem in that the work to form it became extremely difficult.

Is this a problem? As a means to solve this problem, for example, a manufacturing method shown in FIG. 3 has been devised.

That is, in this manufacturing method, first, as shown in FIG. 8, the extruded weatherstrip main body 1a is covered with a mold 10 at appropriate locations where the glass guide r is to be installed. This mold 10 is composed of an upper mold Lot and a lower mold 10b, and a space 11 is formed that roughly follows the outer shape of the weatherstrip body 1a.
The outer lip 4 is housed in the upper part of the outer lip 4.Furthermore, the mold 10 has a cavity 18 for molding a glass guide which is continuous with the housing space 12 of the outer lip 4. Type 1 for tee 13
An injection hole 13a leading to the upper and lower molds is formed, and the upper and lower molds are joined to form the weather strip body 1.
a'7 is fixed, and the hot melt polyamide resin 21 in the applicator 20 is injected into the cavity 13 through the injection hole 13a7j-.

Next, 17c cool the polyamide resin in the cavity 1:3 to form a glass guide 6a, remove the upper and lower molds 10a and 10b from the weatherstrip body la, and fill the injection hole 18a% with polyamide resin. By cutting, the glass guide 6a is formed.
I was trying to get a strip.

However, with this manufacturing method T/c, since the weatherstrip body la is molded from rubber, the injection pressure of the resin 21 causes the weatherstrip body to be 1a is elastically deformed ten thousand times inside the space 11. For this reason, the cavity 18 relatively increases in variety due to the deformation of the outer lip 4 in the same direction in the space. The resin 21 leaks from the gap created between the cavity 18 and the outer lip 4 due to the deformation, and the resin 21 leaks onto the base periphery of the glass guide 68. There is an inconvenience that Paris will occur.

The present invention focuses on the problems of the conventional example shown in Fig. 1.2 and attempts to solve these problems without the above-mentioned disadvantages. A cavity is formed to mold the glass guide, and the parts other than the molded part of the glass guide are pressed to prevent its elastic deformation and fixed, and a softened material for molding the glass guide is injected into the cavity and hardened. By molding the glass guide with
It is an object of the present invention to provide a method of manufacturing a weather strip for a vehicle that solves the problems of the conventional example.

The configuration of the present invention will be explained below according to an embodiment shown in FIG. 4 and subsequent figures.

In this embodiment, the vehicle weather strip 20 provided with the glass guide is positioned on the inside of the vehicle with respect to the periphery of the door window glass when the door window glass is closed as shown in FIG. A weather protection device is provided with an inch lip 22 and an outer lip 28 that protrudes outward.
Strip main body 21 and the weather strip main body 21
A glass guide 24 provided on the outer lip 28 of
It is composed of. When molding the core glass guide 24, first the weather strip body 21 is manufactured by extrusion molding the weather strip body 21.
is housed in the mold shown in FIG. 5, and the upper mold 25 and core 26 form a cavity 27 at the tip of the desired seven lips 28. The upper mold 25 and the corresponding lower mold 29 integrally accommodate the weather strip main body 21 except for the glass guide molding 528 m that is in close contact with the cavity 271C of the outer lip 23.
A pressing housing portion 30 is provided which presses the strip main body 21 to contract it, prevent elastic deformation, and fix it. In this embodiment having the above configuration, the olefin resin is injected into the cavity 27 from the injection port 28 at a required injection pressure by an injection means (not shown).

At this time, the cavity 2 of the weather-7 trip body 21
Since the portions other than the glass guide molding 528a that are in close contact with the glass guide molding 528a are fixed and prevented from being elastically deformed by the suppressing accommodation portion 30, the glass guide molding portion 23a is pressed and accommodated by this injection pressure. The inside of the part 30 does not deform or move ten thousand times, so that only the cavity 27 of a predetermined shape is filled with the olefin resin.

Therefore, after solidifying this olefin resin, the VC upper and lower molds 25
．． 29, it is possible to obtain a vehicle weather strip 20 in which a designed glass guide 24 is provided at the desired tip of the outer lip 23, as shown in FIG. 6). .

FIG. 7 shows another embodiment of the present invention, in which a glass guide molding portion 28a of a hollow outer lip 28 is provided with a hole 28b penetrating into the hollow portion 28c from the outside. In this embodiment, when the glass guide 24 is molded in the same manner as in the previous embodiment, the resin is filled into the hole 28b and the hollow part 28c and hardened, and this filled part acts as an anchor. Therefore, the fixing strength of the glass guide 24 is the same as above.

In the above embodiment, an olefin resin is used as the injection agent, but it is also possible to use a thermoplastic urethane resin, and in that case, the outer lip 28
It is necessary to perform surface treatment on the glass guide molding portion 28a.

As explained above, the present invention provides a vehicle with an outer lip that protrudes outward from the periphery of the door window glass when the door window glass is closed, and a glass guide that further protrudes from the outer lip at an appropriate location on the outer lip. In a method for manufacturing a weather strip, a cavity for molding a glass guide is formed in a glass guide molding portion of an outer lip, and a portion other than the glass guide molding portion is pressed to prevent elastic deformation and fixation, and the above-mentioned We provide a method for manufacturing a weather strip for a vehicle in which a softened material for forming the glass guide is injected into a cavity to form the glass guide.Since the glass guide is layered on the outer lip at the same time as forming, the forming process is easy. The process can be simplified. In addition, the glass guide molding part of the ACCLIP is prevented from deforming due to injection pressure, so the glass guide can be formed as designed without causing cracks or deformation of the glass guide shape due to deformation due to injection pressure. can be obtained.

Also, in the above example, since an olefin resin was used as the injection agent, no adhesive was used.
Strong VC in the NFT weather strip body molded with rubber
It is capable of fixing δ.

[Brief explanation of the drawing]

No. 1 (8) is a perspective view of a conventional weather strip taken along a main mk cross section, FIG. Figure 5 is an exploded sectional view of an IJ knob (weather for an automobile molded according to an embodiment); Figure 5 is a sectional view showing an embodiment of the present invention; Figure 6 is a completed perspective view of an IJ knob (weather for an automobile); Figure 7 is a weather strip for an automobile according to another embodiment of the present invention. 20... Vehicle weather strip, 21... Weather strip body, 22... Inner lip, 23...
... Outer lip, 24... Karaskite, 25...
- Upper mold, 29...lower mold, 80...press housing part. Figure 1 Figure 2 11a

Claims (1)

[Claims] (1) An outer lip that projects outward from the periphery of the door window glass when the door window glass is closed is provided, and glass guides that further project from the outer lip are provided at appropriate locations on the outer lip. In the manufacturing method of a vehicle weather strip in which a glass guide is formed in the glass guide forming part of the outer lip? While forming a cavity to be molded, parts of the glass guide other than the molded part are pressed to prevent its elastic deformation and fixed, and the glass guide is placed in the cavity. Glass guide by injecting softened material to be molded? 'Ff in molding
A method for manufacturing a weather strip for a vehicle.