JPS638020A - Manufacture of window moulding - Google Patents

Abstract

PURPOSE:To manufacture a window moulding simply and high-precisely, by method wherein, in a front window moulding for a vehicle, a long moulding material with a lipform projection line is extrusion-moulded, and a weir is plasticized for formation while it is soft. CONSTITUTION:A long moulding material 22 is moulded by extrusion-moulding PVC resin and the like by means of an extrusion die 21 in a state to feed a core 12 through a feed amount detecting device 20. The moulding material is introduced to a deforming device 23, having a back plate 27 and a roller 28, while it is soft, and a weir 16 is formed to the tip part, position facing a side part 6, of a projection line 4b of the moulding material 22. After the moulding material is cooled in a cooling tank 24, it is taken off by a take-off unit 25 to cut it to specified lengths. This constitution enables simple manufacture of a window moulding with high precision.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a window molding to be attached to a front window of a vehicle.

[Conventional technology]

Fig. 10 is a perspective view of the vehicle, where 1 is the vehicle body, 2 is the window plate (windshield glass), 3 is the side window (door glass), 4 is the window molding, 5 is the upper part, and 6 is the side part. It is.

FIG. 11 is a sectional view taken along the line AA in FIG. 10, showing a conventional window molding disclosed in Japanese Utility Model Publication No. 57-54416. The molding 4 in the side part 6 extends from the molding body 4a covering the gap between the window plate 2 and the vehicle body panel (pillar) 7 to the window plate 2.
A groove 8 is formed between the window plate 2 and the window plate 2 by the individually protruding protrusions 4b.

9 is an adhesive, and 10 is a dumb rubber.

In the window molding mentioned above.

When driving in the rain, water droplets adhering to the window plate 2 are collected in the groove 8 and flow down, so the vehicle body panel (pillar) 7
This prevents the liquid from leaking into the side window 3 and blocking the view of the side window 3.

[Problem that the invention seeks to solve]

However, in such a conventional window molding, the molding 4 has a protrusion 4b formed on the side portion 6, but since the protrusion 4b forms a groove 8 between it and the window plate 2, the molding 4 has a protrusion 4b formed on the side portion 6. There is a problem in that air turbulence is likely to occur, which becomes a source of wind noise, and if the protrusion 4b is flexible, it becomes unstable and shakes occur.

In addition, since the protrusion 4b is not formed in the upper part 5, it is necessary to manufacture molding materials with completely different cross-sectional shapes for the upper part 5 and the side part 6, and in order to integrate them, corner It is necessary to connect at part 11.

In order to join two molding materials with different cross-sectional shapes in this way, if they are joined by injection molding, etc., burrs will be formed at the joint part and spoil the appearance, but if they are joined by using a corner joint, etc., the number of parts will be reduced. There were also problems such as an increase in assembly man-hours.

This invention is intended to solve the above-mentioned problems, and uses the same molding material for part of the upper part and the side part, and has a continuous excellent appearance in part of the corner, and also allows rainwater to flow horizontally in the side part. To provide a method for manufacturing a window molding that can easily and accurately manufacture a window molding that can prevent wind noise and vibration as well as prevent wind noise and vibration.

[Means for solving problems]

This invention has a molding body that covers the gap between the window plate and the vehicle body panel, and a long piece having a constant cross-sectional shape and having a lip-shaped protrusion projecting from the molding body so as to cover and abut the outer periphery of the window plate. A method for manufacturing a window molding, which comprises extruding a molding material, and, while the molding material is in a softened state, plastically deforming the tips of side portions of protrusions of the molding material to form weirs. be.

[For production]

In the method for manufacturing a window molding of the present invention, there is provided a molding body that covers the gap between the window plate and the vehicle body panel, and a cross section that has a lip-shaped protrusion that protrudes from the molding body so as to cover and abut the outer periphery of the window plate. A long molding material with a constant surface shape is extruded, and while the molding material is in a softened state, the tips of the side portions of the protrusions of the molding material are plastically deformed to form weirs,
Manufactures window moldings.

The window molding manufactured in this manner uses the same window molding for the upper part and the side part, and is attached so as to be continuous at the corner part. At this time, the molding body covers the gap between the window plate and the vehicle body panel through the upper part and the side part, and forms a continuous weir around the window plate in the side part.

In this state, rainwater flowing on the window plate is collected in a weir at the side portion and flows down, preventing lateral flow to the side window. Although no weir is formed in a portion of the upper, the window molding is integrally continuous with the side portion at a portion of the corner, so there is no need for a corner member for connection, resulting in an excellent appearance. Furthermore, since no grooves are formed on the side portions, wind noise and vibration do not occur.

〔Example〕

FIG. 1 is a sectional view taken along line BB in FIG. 10 showing a window molding manufactured in an embodiment of the present invention;
The figure is a sectional view taken along line A-A, and the same reference numerals as in FIGS. 10 and 11 indicate the same or corresponding parts.

The window plate 2 is made of transparent inorganic glass or a transparent resin plate such as polycarbonate resin or acrylic resin.

The window molding 4 is made of flexible thermoplastic rubber such as soft PvC resin, ionomer resin, EVA resin, transparent CAB resin, or other elastomer resin;
Due to materials such as synthetic resin.

A mounting leg 14 extends into the gap 13 from a molding body 4a that is formed to be long with a core material 12 buried therein and covers the gap 13 between the window plate 2 and the vehicle body panel 7. The molding body 4a has a structure in which protrusions 4b and 4c are formed on both sides from the protrusion of the mounting leg 14.

The tips of the protrusions 4b form a lip 15 on the upper portion 5 and a weir 16 on the side portion 6, and are in contact with the window plate 2, respectively. The protrusion 4c passes through the upper part 5 and the side part 6 to form a lip 15, and abuts on the end of the vehicle body panel 7 so as to cover it. An engaging fin 14a is provided on the side of the vehicle body panel 7 of the mounting leg 14, and engages with the stepped portion 7a of the vehicle body panel 7, and an engaging fin 14b is provided on the lower part of the mounting leg 14 on the side of the window plate 2,
It engages with the end of the window plate 2. Such a window molding 4 extends from an upper part 5 to a side part 6. The tips of the protrusions 4b are deformed so that the upper part 5 and the side part 6 have different structures. An opaque print layer 17 is formed on the back surface of the outer peripheral portion of the window plate 2.

FIGS. 3 and 4 are cross-sectional views taken along the line A-A showing other window moldings, which have substantially the same structure as the above.

5 to 9 show a method of manufacturing a window molding according to an embodiment of the present invention, FIG. 5 is a plan view of the manufacturing device, FIG. 6 is a front view of the deforming device, and FIGS. 7 and 8. 9 is a sectional view showing a deformed state, and FIG. 9 is a diagram showing the relationship between the delivery amount and the displacement amount.

The manufacturing method of the molding 4 is as shown in FIG.
Send out. It is desirable to apply an adhesive or the like to the core material 12 in advance. The core material 12 is supplied to an extrusion mold 21 while detecting the delivery amount using a delivery amount detection device 20 such as a rotary encoder, and is extruded into a shape shown in FIGS. 1 and 7 by extrusion molding of thermoplastic resin such as PvC resin. A molding material 22 having a surface shape is molded, and immediately after molding, the tip portion corresponding to the side portion 6 of the protrusion 4b is deformed by a deforming device 23 to form a weir 16, and while being cooled in a cooling tank 24, it is removed by a take-off machine 25. The molding 4 is obtained by taking it over and cutting it into a certain size with a cutting machine 26.

The deformation device 23 includes a back plate 27. provided at the exit of the extrusion die 21. and a roller 28 that is movably provided opposite to the roller 29. The back plate 27 has a passage 2 that substantially corresponds to the cross-sectional shape of the molding material 22.
9, and the passage 29 is opened with the lip 15 widening in the shape of a weir 16. The roller 28 has a molded surface 30 corresponding to the weir 16, is rotatably attached to a support portion 31,
Ball screw feeding device 32 and screw stud 3 that engages with it
It is directly connected to a rotational drive source 34 such as a servo motor via a servo motor 3, and can be moved forward and backward by a control device 35 that issues commands based on signals from the delivery amount detection device 20.

The method for deforming the protrusions 4b of the molding material 22 is as follows: While extruding the molding material 22 from the extrusion die 21 in the state shown in FIG. is output, and the drive source 34 rotates at a constant rotational speed by a preprogrammed number of rotations. As a result, the ball screw feeding device 32 moves, and accordingly, the roller 28 moves toward the protrusion 4b side of the molding material 22, and as shown in FIG.
The weir 16 is formed by plastically deforming the tip.

The relationship between the amount of feed of the core material 12 and the amount of displacement of the roller 28 is shown in FIG.
transform. This displacement is maintained while the core material 12 of Ql corresponding to the side portion 6 is delivered.

And the core material 12 is 2. When it is detected that the threaded rod 3 is fed out only during the Q2 corresponding to the corner part 11.
3 rotates in the opposite direction, and the roller 28 returns to the position shown in FIG.

Next, when the core material 12 is fed out by Q3 corresponding to the upper part 5, it is displaced to the maximum amount between the rollers 28 and Q20,
This state is maintained until 0□ core material 12 corresponding to the side portion 6 is delivered. Or indicate the cutting position.

In this way, the displacement of the roller 28 causes the molding material 2 to
2 is plastically deformed and a weir 16 is formed, but this deformation is performed while the molding material 22 is in a softened state immediately after extrusion molding, so the tip of the protrusion 4b can be fluidly deformed, and the desired shape is formed. The weir 16 can be formed by accurately deforming the shape.

When manufacturing the molding 4 shown in FIG.
Therefore, it is possible to detect the amount of molding material 22 delivered by providing a delivery amount detection device 20 in the cooling bath 24 or a subsequent process. Further, the shape of the weir 16 can be any shape as shown in FIGS. 3 and 4, and by using the back plate 27 and rollers 28 corresponding to this, the weir 16 of any shape can be formed. can do.

The method of using the molding 4 manufactured as described above is as follows. That is, in FIGS. 1 and 2, an opaque print layer 17 is formed in advance on the back surface of the outer periphery of the window plate 2, and the dam rubber 10 is
After the is attached, a string of liquid adhesive 9 is discharged around the entire outer circumference (including the lower part). Then, the window plate 2 is fitted into the stepped portion 7a of the vehicle body panel 7 and temporarily fixed to the flange portion 7b, and the mounting legs 14 of the molding 4 are inserted between the window plate 2 and the vehicle body panel 7 before the adhesive 9 hardens. 13 and install it.

The same molding 4 is used through the upper part 5 and the side part 6, and is bent and attached at the corner part 11. At this time, the mounting leg 14 is inserted so that the molding body 4a covers the gap 13 between the window plate 2 and the vehicle body panel 7, and the engaging fins 14a and 14b are attached to the stepped portion 7.
a and window plate 2 and fixed with adhesive 9. At this time, the tip of the protrusion 4b contacts the window plate 2 at the lip 15 in the upper part 5 as shown in FIG. 1, and in the side part 6 by the weir 1 as shown in FIG.
6 comes into contact with the window plate 2. The molding 4 shown in FIG. 3 is first attached to the outer periphery of the window plate 2 and then attached to the vehicle body panel 7.

When the molding 4 is used in this state, the side part 6
In this case, rainwater 18 on the window plate 2 is collected in the weir 16 and flows down, and lateral flow to the side window 3 is prevented. Although the weir 16 is not formed in the upper part 5, the molding 4 is formed in the corner part 11 and the side part 6.
Since it is integrally continuous with the surface, there is no need for corner parts, etc., and the continuous surface provides an excellent appearance. In addition, since the grooves 8 are not formed in the side portions 6 as in the conventional case, there is less air turbulence during driving, and wind noise is not generated. Stability against wind force while driving is improved, and vibration is avoided. do not.

In the above embodiment, the roller 28 is arranged to move horizontally, but depending on the shape of the protrusion to be deformed, it can be arranged in any direction such as vertically or diagonally. Further, the deforming device 23 is not limited to the roller 28, but a shoe or other device may also be used.

Further, in the above embodiment, the lip 15 is formed at the tip of the protrusion 4c over the upper part 5 and the side part 6.
By forming the weir 16 at the tip of the upper part 5, it is possible to prevent rainwater from flowing down from the roof panel to the window plate 2.

〔Effect of the invention〕

According to the present invention, the same continuous molding can be used as the molding for the upper part and the side part, and it is possible to prevent rainwater from flowing sideways in the side part, and also eliminates the need for a connecting member and a connecting process in the corner part. It is possible to easily and accurately manufacture window moldings that have excellent appearance and stability, and do not generate wind noise or vibration.

[Brief explanation of drawings]

FIG. 1 is a sectional view taken along line BB in FIG. 10 showing a molding manufactured according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA, and FIGS. 3 and 4 are sectional views taken along line A--
A sectional view and FIGS. 5 to 9 show a method for manufacturing a window molding according to an embodiment of the present invention, and FIG.
The figure is a plan view of the manufacturing device, FIG. 6 is a front view of the deforming device, FIGS. 7 and 8 are sectional views showing the deformed state, FIG. 9 is a diagram showing the relationship between the delivery amount and the displacement amount, and FIG. Perspective view of vehicle, 1st
FIG. 1 is a sectional view taken along line A-A showing a conventional molding. In each figure, the same reference numerals indicate the same or equivalent parts, 2 is the window plate, 4 is the molding, 4a is the molding body, 4b, 4c are the protrusions, 5 is a part of the upper,
6 is a side part, 7 is a vehicle body panel, 12 is a core material, 14 is a mounting leg, 15 is a lip, 16 is a weir, 20 is a delivery amount detection device, 21 is an extrusion mold, 23 is a deformation device, 27 is a back plate, 28 is a roller. Agent Patent Attorney Sei Yanagihara Figure 11

Claims (3)

[Claims] (1) A long piece with a constant cross-sectional shape, which has a molding body that covers the gap between the window plate and the vehicle body panel, and a lip-shaped protrusion that protrudes from the molding body in a lip shape so as to cover and abut the outer periphery of the window plate. A method for producing a window molding, which comprises extruding a molding material and, while the molding material is in a softened state, forming a weir by plastically deforming the tip of a side portion of a protrusion of the molding material. (2) The manufacturing method according to claim 1, wherein the molding material is deformed immediately after extrusion molding. (3) The manufacturing method according to claim 1 or 2, wherein the molding material is deformed in accordance with the amount of core material to be delivered to be embedded in the molding material.