JP3234161B2 - Method and apparatus for manufacturing wind molding for automobile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a method for manufacturing a window molding for a vehicle, which is mounted on a peripheral portion of a front window glass of an automobile and conceals a gap between the peripheral portion of the window glass and a vehicle body. Related to the device.

[0002]

2. Description of the Related Art In this type of window molding, in order to prevent rainwater or the like from flowing from both side edges of the window glass to the side of the vehicle body, the height of the side molding extending along the front pillar is higher than the height of the glass. Is made larger than the upper molding along the body roof to form a drip groove for collecting rainwater, and the upper molding and side molding that have different heights projecting above the glass are integrally extruded. A so-called variable cross-sectional shape type is known.

For example, Japanese Patent Publication No. Hei 8-25385 discloses a technique for manufacturing such a wind molding.
As shown in the figure, the head part 101 and the leg part 102 are simultaneously extruded in a separated state, and in a part to be a side molding part, both are fusion-bonded by a guide roller 104 at a subsequent stage of the extrusion mold 103, As shown in FIGS. 11 and 12, in the upper molding portion, a part of the leg 102 corresponding to the essential drip groove 105 in the side molding portion near the exit of the extrusion mold 103 was supported by the frame 106. A wire-shaped cutter 107 cuts off the material 108, and the head 101 and the leg 102 are pressure-bonded by a guide roller 104 at the subsequent stage.

[0004]

In the conventional window molding manufacturing technique as described above, the head 101 and the leg 102, which are extruded in a separated state, are connected to the guide roller 10 by a guide roller.
Since the bonding is performed by pressing in step 4, the head portion 101 immediately after molding may be deformed due to the pressing force, and there is a limit in improving the molding accuracy of the molding.

[0005] Further, simultaneously extruded head 10
A cut portion (disposable cloth) 108 cut by the cutter 107 is generated between the leg portion 1 and the leg portion 102.
8 cannot be pulled out in the longitudinal direction like the head portion 101 or the leg portion 102, and must be discharged to the side from between the head portion 101 and the leg portion 102. As a result, the cutout 108 may adhere to the head 101 or the leg 102 during production and may be caught as a part of the molding, and the portion where the cutout 108 is caught becomes a defective product. It is not preferable because it results in a decrease in material yield and a decrease in productivity.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and aims to improve the accuracy of the shape of a window molding to be extruded, and to prevent a trouble due to the adhesion of a cut portion, thereby improving the material yield. It is an object of the present invention to provide a method and an apparatus for manufacturing a wind molding, which can improve the productivity and the productivity.

[0007]

According to a first aspect of the present invention, there is provided an elongated window molding which is mounted along a peripheral portion of a window glass and whose sectional shape changes in a longitudinal direction thereof. And a leg located between the support and the supporting surface of the body panel facing the glass lip, a glass lip protruding from the leg toward the window glass and pressed against the upper surface of the window glass, and a pillar at the upper end of the glass lip. And a head molding that is coupled to the vehicle body side of the wind molding.In a side molding part along a pillar side part on a vehicle body side, a distance between the glass lip and the head part and an angle formed by the two are defined by a pillar part. By continuously changing the height of the side molding from the upper part to the lower part with the height, the glass lip, the head part and the pillar part While the drip groove is formed in the portion surrounded by, the drip groove substantially disappears in the upper molding portion of the wind molding along the roof portion on the vehicle body side, and the head portion and the glass lip overlap. A method for manufacturing a wind molding having an integrated structure, comprising: a first extrusion die having a shape in which a pillar portion and a head portion of a maximum height portion in the side molding portion are integrated with a head portion; A first extrusion step of extruding the intermediate molded body, and cutting off all the pillar portions of a portion corresponding to the upper molding portion of the first intermediate molded body at the outlet of the first extrusion die. On the other hand, a cutting step of continuously changing the cut amount while cutting a part of the column portion corresponding to the side molding part with the cutter, and a second extrusion die at a later stage of the cutting step. Glass In the part corresponding to the side molding part, the angle of the glass lip with respect to the head part is extruded so that the second intermediate molded body having a shape in which the head and the leg are integrated is superimposed on the first intermediate molded body. A step of continuously changing the first intermediate molded body and the second intermediate molded body by fusion bonding.

According to a second aspect of the invention, the cutter in the cutting step according to the first aspect of the invention is displaced with respect to the first extrusion die together with the second extrusion die. I have.

According to a third aspect of the present invention, the cutter and the second extrusion die according to the first aspect are individually displaced with respect to the first extrusion die. I have.

According to a fourth aspect of the present invention, the position of the cut surface at the moment of the cutting in the cutting step according to the third aspect of the present invention is the position of the first and second intermediate molded bodies in the second extrusion step. The position and orientation of the second extrusion die are set so that they coincide with the position of the fusion bonding surface by delaying the time required for the first intermediate molded body to move from the cutting step to the second extrusion step. Is reproduced.

According to a fifth aspect of the present invention, there is provided a manufacturing apparatus used in the manufacturing method according to the first or second aspect, wherein
The extrusion die and the second extrusion die are arranged at a predetermined distance from each other, and a cutter disposed on the outlet side of the first extrusion die is fixed to the second extrusion die, Further, the second extrusion die is configured to be displaceable in the height direction of the support with respect to the first extrusion die and to be swingably displaceable in a plane orthogonal to the longitudinal direction of the molding. Features.

According to a sixth aspect of the present invention, there is provided a manufacturing apparatus used in the manufacturing method according to the third or fourth aspect, wherein
And the second extrusion die are arranged at a predetermined distance from each other, and a cutter is disposed on the outlet side of the first extrusion die. , Independently of each other, the first extrusion die can be displaced in the height direction of the column portion and can be swingably displaced in a plane orthogonal to the longitudinal direction of the molding. .

Therefore, in the present invention, the first intermediate molded body in which the head portion and the support portion are integrated is extruded from the first extrusion die, and immediately thereafter, all or a part of the support portion is cut off. As a result, the cross-sectional shape of the first intermediate molded body in the longitudinal direction changes according to the degree of the cut amount.

The second intermediate molded body having a uniform cross-sectional shape in which the glass lip and the leg are integrated at the subsequent stage of the cutting step is extruded so as to be superimposed on the first intermediate molded body. If necessary, the angle of the glass lip is changed, and as a result, the first and second intermediate molded bodies are fusion-bonded to each other to form a window molding whose sectional shape changes in the longitudinal direction.

[0015]

3 to 8 show typical embodiments of the present invention. In particular, as shown in FIGS.
A resin window molding 2 attached to a peripheral portion of a windshield 1 of an automobile includes an upper molding portion 3 having a uniform cross-sectional shape disposed along an upper edge portion of the windshield 1 on the vehicle body roof side; Similarly, a side molding portion 4 is provided along the so-called pillar side portions of both side edges of the front glass 1 on the front pillar side, and the cross-sectional shape gradually increases from the upper portion to the lower portion. The upper molding part 3 includes a corner molding part 5 curved along the upper corner part of the windshield 1. The upper molding portion 3 and the side molding portion 4 are formed as a single continuous string by a variable cross-section extrusion molding method described later.

The side molding portion 4 has a leg 7 located in a gap between the end surface 1 a of the windshield 1 and the vehicle body panel 6, and a windshield 1 from the upper end of the leg 7.
Glass lip 8 integrally formed to project toward the upper surface side of the glass
An auxiliary lip 9 integrally formed from the leg 7 toward the glass lip 8 side; and an anchor 10 integrally formed from the lower end of the leg 7 in the same direction as the glass lip 8.
And the glass fitting groove 1 having a substantially U-shaped cross section formed by the legs 7, the glass lip 8, and the anchor 10.
1 is formed. Then, the end of the front glass 1 is fitted into the glass fitting groove 11.

The side molding portion 4 has a head portion 1 at the upper end of the glass lip 8 via a pillar portion 12 such as a rib.
3 is integrally formed, and a panel lip 14 that comes into pressure contact with the vehicle body panel 6 is integrally formed from the head portion 13, and a decorative portion is provided at the center of the head portion 13 in the width direction. A film 15 is embedded.
A core wire 16 made of metal, glass fiber, or the like is embedded in the head portion 13 to suppress the longitudinal extension of the wind molding 2 itself.

The column 12 and the glass lip 8
A drip groove 17 for collecting rainwater having a substantially U-shaped cross section is formed by the three members of the head portion 13 and the depth (height) of the drip groove 17 is determined by the height of the support portion 12 and the side molding portion. 4 gradually increases continuously and smoothly from the upper end to the lower end.

More specifically, in the side molding portion 4, as shown in FIGS. 3 and 4, the depth of the drip groove 17 gradually increases along with the height of the column portion 12 from the upper end to the lower end thereof, and The head portion 13 is twisted with respect to the lip 8 so that the angle θ formed between the two also gradually increases, whereby the volume of the drip groove 17, that is, rainwater collection, increases from the upper end to the lower end of the side molding portion 4. The shape is such that the amount gradually increases.

Here, in addition to the panel lip 14 and the auxiliary lip 9, the glass abutment portion 18 forming the glass fitting groove 11 is formed of the same material as the leg portion 7, the support portion 12, and the like. May be used, but in particular, the leg 7 and the strut 1
2 and the like are formed of hard resin, the panel lip 14, the auxiliary lip 9, and the glass contact portion 18 are formed.
It is desirable that the panel lip 14, the auxiliary lip 9, and the glass contact portion 18 are integrally formed with the leg 7 and the support 12 by a known simultaneous extrusion molding method. Can be molded as

On the other hand, in the upper molding section 3, FIGS.
As shown in the figure, the leg 7, the head 13, the panel lip 1
Although the shapes of the lip 4 and the auxiliary lip 9 are the same as those of the side molding portion 4, the drip groove 17 between the glass lip 8 and the head portion 13 has substantially disappeared together with the support portion 12, and The head section 13 has a uniform cross-sectional shape fused and integrated so as to be superimposed on each other.

Therefore, according to the structure of the wind molding 2 as described above, the side molding portion 4 which is disposed along the front pillar when the vehicle is mounted on the vehicle is shown in FIG.
As shown in FIG. 4, a drip groove 17 for collecting rainwater is formed between the glass lip 8 and the support portion 12 and the head portion 13, and the drip groove 17 also has a side molding along with the change in height of the support portion 12. The shape is such that the volume gradually increases toward the lower end of the portion 4, thereby preventing the rainwater attached to the windshield 1 from being collected by the drip groove 17 and flowing around the side of the vehicle body, and the rainwater is It flows smoothly down the windshield 1 along the drip groove 17.

FIGS. 1 and 2 show the structure of an extrusion molding apparatus for extruding the above-mentioned window molding 2. FIG.

As shown in FIGS. 1 and 2, the first extrusion die 1
9 and a second extrusion die 20 are arranged at a predetermined interval, and a cutter 21 having a substantially L-shaped cross section is arranged between the two. The cutter 21 is fixed to the second extrusion die 20, and the wedge-shaped cutting edge 21 a at the tip of the cutter 21 is in contact with or close to the exit-side surface of the first extrusion die 19. Confronted.

While the first extrusion base 19 is of a fixed type, the second extrusion base 20 is configured as a movable type, and is provided on both sides of the second extrusion base 20. Output rods 24 of independent linear drive devices 23 are individually connected to tips of the protruding arms 22, respectively. While one output rod 24 of the two driving devices 23 is connected via a pin 26 and a corresponding pin hole, the other output rod 24
Are connected via an elongated hole 25 and a pin 26. Therefore, the second extrusion die 20 is moved vertically with respect to the first extrusion die 19 by contracting the other one of the two driving devices 23 and 23 in synchronization with the extension operation. And one drive 2
The structure in which the second extrusion die 20 can be displaced in a plane orthogonal to the molding extrusion direction by intentionally making the contraction amount of the other drive device 23 different from the extension amount of the third drive device 23. It has become.

The first extrusion die 19 has a column 1 above the glass lip 8 in the side molding 4 shown in FIG.
2, an extrusion opening 26 corresponding to a shape including the head portion 13 and the panel lip 14 is formed. Match the shape.

Accordingly, while a predetermined resin material is extruded from the extrusion die 19 while the cutter 21 is held at the lowest position (P1 position in FIG. 4) with respect to the _first extrusion die 19, the extrusion operation is performed. in parallel with highest position the cutter 21 from the lowest position P ₁ by causing toward the (P ₂ position of FIG. 4) is continuously increased at a predetermined rate, some of the struts 12 immediately after extruded that Is cut off as the waste material 27, and the column portion 12, the head portion 13 and the panel lip 14 in the side molding portion 4 are extruded as a first intermediate molded body 28 in which the height of the column portion 12 gradually changes. Become.

[0028] Of course, extruding a first intermediate molding body 28 in exactly the same manner even when the cutter 21 is continuously lowered from the highest position P ₂ to the lowest position P ₁ relative to the first extrusion die 19 can do.

Further, the cutter 21 is connected to the first extrusion die 19.
By extruding the predetermined resin material from the extruding port 26 while holding the highest position P _2, most of the strut 12 immediately after extruded is cut by the cutter 21 relative to the first intermediate product 28 As a result, the head portion 13 and the panel lip 14 without the support portion 12, that is, the head portion 13 and the panel lip 14 of the upper molding portion 3 are extruded.

On the other hand, the second extrusion die 20 has an extrusion hole having a shape common to the side molding portion 4 and the upper molding portion 3, that is, a leg portion 7, a glass lip 8, and an anchor portion 10.
And an extrusion port 29 having a shape including the auxiliary lip 9, and a part of the extrusion port 29 is opened on the upper surface of the second extrusion die 20.

Therefore, in the second extrusion die 20, a predetermined resin material is extruded from the extrusion port 29, so that the leg 7 and the glass lip 8 common to the upper molding part 3 and the side molding part 4 are formed. The second intermediate molded body 30 including the anchor portion 10 and the auxiliary lip 9 is extruded.

Here, two extruders 31, 32 are connected to the second extrusion die 20 via a flexible pipe 33. For example, one extruder 31 is used as a material for the legs 7 and the like. While the hard resin material is supplied, the other extruder 32 supplies a soft resin material as a material for the auxiliary lip 9 and the like. The above is exactly the same for the first extrusion die 19, but the extruder and the like on the first extrusion die 19 side are not shown in FIGS.

When the window molding 2 is formed by the extrusion molding apparatus constructed as described above, the core wire 16 and the decorative film 15 shown in FIGS. And at the same time, it is pulled at a constant speed, and in synchronization with the feeding operation of the core wire 16 and the decorative film 15, hard and soft resin materials are extruded from the extrusion port 26 to form the first intermediate molded body 28. At the same time, a hard and soft resin material is extruded from the extrusion port 29 of the second extrusion die 20 to form a second intermediate molded body 30, and the second intermediate molding 30 is formed by the second extrusion die 20. The first intermediate molded body 28 is polymerized on the intermediate molded body 30 of, and the molding of the wind molding 2 is performed while the two are fused and integrated.

More specifically, the shape of the extrusion port 26 of the first extrusion die 19 is, as described above, the portion of the side molding portion 4 where the height of the column portion 12 is the largest, and Since the shape matches the shape including the head portion 13 and the panel lip 14, the first intermediate molded body 28 corresponding to the shape is once extruded from the extrusion port 26 of the first extrusion base 19, Since the cutter 21 is disposed immediately after the extrusion opening 26 of the first extrusion die 19, the portion of the intermediate molded body 28 once extruded, which is below the cutter 21, is cut off as the waste material 27 and collected. Then, only the portion above the cutter 21 remains as the first intermediate molded body 28 and is sent out to the second extrusion die 20 side.

Here, as shown in FIGS. 4 and 5, by holding the cutter 21 at the highest position P ₂ with respect to the first extrusion die 19, the first extrusion extruded from the extrusion port 26 is performed. The portion corresponding to the support portion 12 of the intermediate molded body 28 is entirely cut off as the waste cloth 27, and only the head portion 13 and the panel lip 14 remain as the first intermediate molded body 28. The head portion 13 and the panel lip 14 of the upper molding portion 3 having no support portion 12 are continuously extruded as the first intermediate molded body 28 unless the 21 is moved.

Further, in synchronization with the extrusion operation of the first intermediate molded body 28, the two driving devices 23, 23 are activated to lower the second extrusion die 20 at a predetermined speed. As a result, the amount of the waste material 27 that is cut off is gradually reduced, and as a result, the support 12 is also attached to the first intermediate molded body 28 that is sent to the second extrusion die 20 side. The height of the support portion 12 gradually increases. As a result, as shown in FIGS. 3 and 4, the head portion 13 of the side molding portion 4 where the height of the support portion 12 gradually changes in the longitudinal direction, the support portion 12 and the panel lip 14 are continuously extruded. Is done.

At this time, the amount of movement of the second extrusion die 20 by the two driving devices 23, 23 is made different from each other, thereby synchronizing with the extrusion operation of the second extrusion die 20 from the extrusion opening 29. A twist is applied to the second extrusion die 29, and as a result, the angle θ shown in FIG. 4 gradually increases.

When the first intermediate body 28 after being cut off by the cutter 21 reaches the second extrusion die 20, the upper molding from the extrusion hole 29 of the second extrusion die 20. A second intermediate molded body 30 having a shape common to the portion 3 and the side molding portion 4, that is, a shape including the leg portion 7, the glass lip 8, the anchor portion 10, and the auxiliary lip 9, is extruded. The intermediate moldings 28, 30 are polymerized and fused and integrated with each other at the fusion bonding surface Q, whereby the window molding 2 having a different sectional shape in the longitudinal direction is continuously formed.

That is, since the upper molding portion 3 does not have the support portion 12, the head portion 13 on the first intermediate molding 28 side and the glass lip 8 on the second intermediate molding 30 side are directly fused to each other. 5, the support 12 on the first intermediate molded body 28 and the leg 7 on the second intermediate molded body 30 are fused together in the side molding part 4. Is formed into a predetermined sectional shape shown in FIG.

As is apparent from the above description, according to the present embodiment, the extrusion port 2 of the first and second extrusion bases 19 and 20 is used.
6 and 29, the cutter 21 is pivotally displaced by a predetermined amount while being moved up and down together with the second extrusion die 20, so that the column portion 12 is moved as shown in FIGS. Upper molding portion 3 having a uniform cross-sectional shape in which head portion 13 and glass lip 8 are in close contact with each other without any intervention.
And the long window molding 2 in which the side molding part 4 in which the height of the support | pillar part 12 changes continuously is integrated, and it extrudes continuously.

FIG. 6 shows a second embodiment of the present invention. The shapes of the first extrusion die 34 and the cutter 35 are different from those shown in FIG.

More specifically, in the present embodiment, while the first extrusion die 34 has a stepped shape, a regulating plate 36 is arranged in parallel with the shielding plate type cutter 35 to regulate the cutter 35. It is designed to move up and down along the first extrusion die 34 together with the plate 36. An opening 38 is formed in the cutter 35 so as to correspond to a portion of the extrusion port 37 corresponding to the column 12.
The waste material 27 is cut off using the upper edge of the waste material as a cutting edge, and the waste material 27 is discharged from the opening 38.

The point that the cutter 35 and the regulating plate 36 are fixed to a second extrusion die (not shown) and moves up and down together with the second extrusion die is the same as that shown in FIG. .

Also in the case of the present embodiment, the window molding 2 whose sectional shape changes in the longitudinal direction can be formed smoothly, just like the first embodiment.

FIGS. 7 and 8 show a third embodiment of the present invention.

In the first and second embodiments described above, the first extrusion base 19 or 34 and the second extrusion base 2
0 is separated by a predetermined distance, and the cutter 21 or 3
5 is a structure that moves integrally with the second extrusion die 20, and when the position or posture of the cutter 21 or 35 is rapidly and continuously changed, a part of the first intermediate molded body 28 is partially removed. The position or posture of the cut surface when cut by the cutter 21 or 35, and the cut surface is the second extrusion die 2
0, there is a large difference between the position or the posture at the time of fusion with the second intermediate molded body 30 and the first and second intermediate molded bodies 28, 28 at the fusion position. A gap may be formed between the first and second intermediate molded bodies 28.
May be pushed up by the second extrusion die 20. Therefore, such a problem is solved in the third embodiment.

As shown in FIGS. 7 and 8, the second extrusion die 3
Although the point 9 is driven by two driving devices 23, 23 in common with that shown in FIG.
2 is shown in FIG. 2 in that it is separated from the second extrusion die 39 and is driven independently by two driving devices 41, 41 other than the second extrusion die 39. Is different. An inclined guide surface 42 for guiding the first intermediate body 28 is formed on the upper surface of the second extrusion die 39.

The cut surface moves to the second extrusion die 39 with respect to the position and posture of the cut surface when a part of the first intermediate molded body 28 is cut off by the cutter 40, and The position and the position of the second extrusion die 39 are controlled by the control device 43 so that the position and orientation of the fusion bonding surface Q when fusion bonding with the second intermediate molded body 30 coincide, and always polymerize by a constant amount. The attitude is controlled.

That is, the position and the posture of the cutter 40 when a part of the first intermediate molded body 28 is cut off at the outlet side of the first extrusion die 19 are different from those of the first intermediate molded body 28. If the position and orientation of the upper surface of the second extrusion die 39 can be reproduced with a delay of the time T required to move to the second extrusion die 39, the first intermediate molded body 28 and the second intermediate
The control device 43 reproduces the position and the posture of the cutter 40 as the position and the posture of the second extrusion die 39 with a delay of time T because the intermediate molded body 30 and the intermediate molded body 30 are smoothly adhered and fused. To this end, the drive devices 23 for the second extrusion die 39 are controlled.

The extrusion speed of the window molding 2, that is, the feed speed of the core 16 is detected by the rotary encoder 44 and input to the control device 43.

Here, the extrusion speed of the window molding 2 (feeding speed of the core wire 16) is V (m / min),
Assuming that the distance between the second extrusion caps 19 and 39 is L (mm), the delay time T (sec) is determined by the following equation.

V × (1000/60) × T = LT T = (60 × L) / (V × 1000) T = 0.06 (L / V) Therefore, in this embodiment, the first intermediate molded body The position and posture of the cut surface when a part of the part 28 is cut by the cutter 40 is the fusion bonding surface Q between the first and second intermediate molded bodies 28 and 30 on the second extrusion die 39. And the position and posture of the window molding 2 accurately, and the molding quality of the wind molding 2 is further improved and the quality is stabilized.

[0053]

According to the first aspect of the present invention, the intermediate molded body in which the support portion and the head portion are integrated is extruded from the first extrusion die, and the outlet of the first extrusion die is formed. After part or all of the portion corresponding to the pillar portion is cut off on the side, the second intermediate molded body 2 is extruded from the second extrusion die so as to overlap with the first intermediate molded body on the subsequent stage side. Both are fusion-bonded. Therefore, since the guide roller is not involved in the fusion bonding of the window molding unlike the related art, the shape accuracy of the window molding is improved without deformation. Further, since the first intermediate molded body is merely divided into two parts, the waste material portion cut off by the cutter, the waste material portion can be easily discharged, and the waste material portion can be transferred to another product area as in the conventional case. As a result, the material yield is improved and the productivity is improved.

According to the second and fifth aspects of the present invention, by displacing the cutter integrally with the second extrusion die, both drive systems can be substantially shared. In addition to the same effects as the first aspect of the invention, there is an effect that the structure and control of the drive system can be simplified.

According to the third and sixth aspects of the present invention, the first and second intermediate molded bodies on the second extrusion die are individually displaced by the cutter and the second extrusion die. Control of the position and the posture of the fusion bonding surface of the substrate becomes easy.

In particular, as in the invention according to claim 4, the position and the posture of the second extrusion die are controlled so as to reproduce the position and the posture of the cutter when cutting the first intermediate molded body. By doing so, the cut surface of the first intermediate molded body and the fusion bonded surface of the first and second intermediate molded bodies surely coincide with each other and polymerize. Can be manufactured stably, and the molding quality of the wind molding is further improved.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a step of extrusion molding a wind molding showing a typical embodiment of the present invention.

FIG. 2 is a perspective view of a main part of the extrusion molding apparatus shown in FIG.

FIG. 3 is a perspective view of a main part when a window molding manufactured by the method of the present invention is mounted.

FIG. 4 is an enlarged cross-sectional view of an upper molding portion in the wind molding shown in FIG.

FIG. 5 is an enlarged sectional view of a side molding part in the wind molding shown in FIG. 3;

FIG. 6 is an essential part exploded perspective view showing a second embodiment of the present invention.

FIG. 7 is an explanatory diagram of an extrusion molding step showing a third embodiment of the present invention.

FIG. 8 is a perspective view of a main part of the extrusion molding apparatus shown in FIG.

FIG. 9 is an explanatory view showing a conventional method for forming a wind molding.

FIG. 10 is a sectional view taken along the line AA of FIG. 9;

FIG. 11 is an explanatory view showing a conventional method of forming a wind molding.

FIG. 12 is a sectional view taken along the line BB of FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Windshield 2 ... Wind molding 3 ... Upper molding part 4 ... Side molding part 6 ... Body panel 7 ... Leg part 8 ... Glass lip 12 ... Prop part 13 ... Head part 17 ... Drip groove 19 ... 1st extrusion mouthpiece DESCRIPTION OF SYMBOLS 20 ... 2nd extrusion die 21 ... Cutter 23 ... Drive device 26 ... Extrusion opening 27 ... Discarded dough 28 ... 1st intermediate molded body 29 ... Extrusion opening 30 ... 2nd intermediate molded body 34 ... 1st extrusion opening Gold 35 ... Cutter 37 ... Extrusion port 39 ... Second extrusion die 41 ... Drive device 43 ... Control device Q ... Fusion bonding surface

Claims (6)

(57) [Claims] 1. A long window molding which is mounted along a peripheral portion of a window glass and whose cross-sectional shape changes in a longitudinal direction thereof, and is located between an end surface of the window glass and a body panel facing the window glass. A leg portion, a glass lip protruding from the leg portion toward the window glass and pressed against an upper surface of the window glass, and a head portion coupled to a top end of the glass lip via a support portion; In the side molding portion along the pillar side portion on the vehicle body side, the distance between the glass lip and the head portion and the angle formed by the both gradually increase from the upper side of the side molding portion to the lower side together with the height of the support portion. As described above, a drip groove is formed in a portion surrounded by the glass lip, the head portion, and the support portion. In the upper molding portion of the wind molding along the roof portion on the vehicle body side, a method for manufacturing a window molding having a structure in which the drip groove is substantially disappeared and the head portion and the glass lip are integrally integrated. The first extrusion die having a shape in which the column and the head at the maximum height of the side molding from the first extrusion die are integrated with each other.
A first extruding step of extruding the intermediate molded body of the above, and cutting off all of the support portions of the portion corresponding to the upper molding portion of the first intermediate molded body at the outlet of the first extrusion die. On the other hand, a cutting step of continuously changing the cut amount while cutting a part of the column portion corresponding to the side molding part with the cutter, and a second extrusion die at a later stage of the cutting step. The second intermediate molded body having a shape in which the glass lip and the leg are integrated from the first intermediate molded body is extruded so as to be superimposed on the first intermediate molded body, and the part corresponding to the side molding part is formed of the glass lip with respect to the head part. A step of continuously changing the angle and fusing and joining the first intermediate molded body and the second intermediate molded body to each other. 2. The method according to claim 1, wherein the cutter in the cutting step is displaced with respect to the first extrusion die together with the second extrusion die. 3. The method according to claim 1, wherein the cutter and the second extrusion die are individually displaced with respect to the first extrusion die. 4. The second pressing means so that the position of the cut surface at the moment of cutting in the cutting step coincides with the position of the fusion bonding surface between the first and second intermediate bodies in the second extrusion step. 4. The position and the posture of the cutter, wherein the position and the posture of the exit metal are delayed by a time required for the first intermediate molded body to move from the cutting process to the second extrusion process. A method for producing a wind molding for an automobile according to the above. 5. The manufacturing apparatus used in the manufacturing method according to claim 1, wherein the first extrusion die and the second extrusion die are arranged at a predetermined distance from each other, and A cutter disposed on the outlet side of the extrusion die is fixed to the second extrusion die, and the second extrusion die has a height of the column portion with respect to the first extrusion die. An apparatus for manufacturing a window molding for an automobile, wherein the apparatus is configured to be displaceable in a direction and swingably displaceable in a plane perpendicular to a longitudinal direction of the molding. 6. A manufacturing apparatus used in the manufacturing method according to claim 3, wherein the first extrusion die and the second extrusion die are arranged at a predetermined distance from each other, and the first extrusion die and the second extrusion die are separated from each other. A cutter is arranged on the outlet side of the extrusion die of the above, and the cutter and the second extrusion die can be displaced independently of each other in the height direction of the support with respect to the first extrusion die. An apparatus for manufacturing a window molding for an automobile, wherein the apparatus is configured to be capable of swinging displacement in a plane orthogonal to a longitudinal direction of the molding.