JPH058280A - Molding for vehicle, and method and apparatus for manufacturing same - Google Patents

Abstract

PURPOSE:To continuously mold a molding for a vehicle having a smooth surface shape and excellent in decoration properties and safety without generating wastefulness and passing through a cutting or imparting process. CONSTITUTION:Extrusion is performed while the opening area of the extrusion opening part of a fixed die 20 is continuously changed in predetermined timing by the rotary movement of a rotary die 30 and a strip like molding for a vehicle is molded in series so that the cross-sectional shape of a protruding part 102 is gradually changed in a predetermined section in a longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle molding made of a long strip-shaped extruded member mounted on a window opening of a vehicle body panel, a side panel or the like, and a method and apparatus for manufacturing the same.

[0002]

2. Description of the Related Art Generally, a window opening, a side panel or a roof panel provided on a body panel of various vehicles such as automobiles and ships is equipped with a molding for sealing and decoration. For example, a window molding is attached to a peripheral portion of a window glass in a window opening of a vehicle body panel of an automobile. That is, a continuous elongated gap is formed from the upper portion to the side portion between the peripheral edge portion of the window glass and the opening edge of the window opening portion of the vehicle body panel. Is inserted and the seal and decoration are done. Such a vehicle molding usually comprises a long strip-shaped extruded member, and is extruded through an opening provided in a die of an extruding apparatus.

In this type of vehicle molding,
Providing a water conduit or the like by changing the cross-sectional shape in the longitudinal direction has been conventionally performed, for example, in Japanese Patent Laid-Open No. 195032/1989, Japanese Patent Laid-Open No. 195033/1990 or Japanese Utility Model Laid Open No.
It is proposed in Japanese Patent Publication No. 130816. In these, extrusion is first performed with a constant cross-sectional shape, and then the constant shape is cut or imparted, thereby forming a changed portion of the cross-sectional shape.

[0004]

However, in the above-mentioned conventional vehicle molding, an acute-angled portion is formed at the portion where the cross-sectional shape changes due to cutting or application, which causes a problem in terms of decorativeness and safety. Has occurred. Further, when the molding is cut near the die, how to treat the waste material after cutting is a problem.

Therefore, an object of the present invention is to provide a wind molding for an automobile capable of continuously extruding over the entire length while continuously changing the cross-sectional shape.

[0006]

In order to achieve the above object, the invention according to claim 1 comprises an elongated strip-shaped extruding member mounted at a predetermined position of a main body panel,
A vehicle molding comprising a protrusion that bulges toward the outside of the vehicle from a base that is fixed to the body panel side, and the cross-sectional shape of the protrusion that is orthogonal to the longitudinal direction is changed along the longitudinal direction. The projecting portion is formed integrally with the base portion such that the cross-sectional shape change portion is gradually changed in a predetermined section in the longitudinal direction, and the entire length of the molding is formed in series. It has a configured configuration.

The invention according to claim 2 uses a die having an opening for extrusion-molding a protrusion that bulges toward the outside of the vehicle from a base that is fixed to the body panel side. In a method for manufacturing a vehicle molding in which a belt-shaped vehicle molding is extrusion-molded, in order to gradually change the transverse cross-sectional shape of the protrusion between predetermined sections in the longitudinal direction, the extrusion opening of the die By extruding while continuously changing the opening area at a predetermined timing, a belt-shaped vehicle molding is formed in series.

According to the third aspect of the invention, there is provided a die having an opening for extruding a base portion fixed to the main body panel side and a protrusion protruding from the base portion toward the outside of the vehicle. In an apparatus for manufacturing a molding for a vehicle, the extrusion opening portion of the die has an opening area by rotational movement so that the cross-sectional shape of the protrusion is gradually changed between predetermined longitudinal sections. Is provided with a cam-shaped rotating die for changing

[0009]

In the means having such a structure, extrusion molding is performed while the opening shape of the extrusion opening portion of the die is changed by rotationally moving the rotary die, and at this time, the cross-sectional shape of the decorative portion is continuous. The moldings can be obtained in series while being changed.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. First, a molding 1 shown in FIG. 1 is composed of a long strip-shaped extruded member, and includes a base portion 101 mounted at a predetermined position on a main body panel and a bulge from the base portion 101 toward the outside of the vehicle. The protruding portion 102 is formed integrally. The base 101 has a substantially rectangular cross-sectional shape orthogonal to the longitudinal direction of the molding 1, and is maintained in a constant cross-sectional shape along the longitudinal direction. In addition, an insert core metal 103 is embedded in a substantially central portion of the base 101. On the other hand, the protrusion 102 is formed only in a certain range in the longitudinal direction of the molding 1, and therefore the molding 1
As a whole, a flat molding 1A consisting only of the base 101 and a projection molding 1B in which a projection 102 is integrally formed on the base 101 are molded in series.

The projection 102 is formed in an inverted U-shape in a cross-sectional shape orthogonal to the longitudinal direction, and the inverted U-shaped cross-sectional shape is changed along the longitudinal direction. That is, the protrusion 102 includes a shape-constant portion 102a having a constant cross-sectional shape and a shape-changing portion 102b in which the inverted U-shaped bulging shape is gradually changed. Of these, the shape changing portion 102b is within a certain section in the longitudinal direction of the molding 1, specifically, the shape changing portion 10b.
The inverted U-shaped bulge amount is changed in a portion between the flat molding 2A and the flat molding 1A.
The maximum bulge amount is formed at the joint portion with and the joint portion with the flat molding 1A disappears.

Next, an apparatus for manufacturing the molding 1 according to the above-mentioned embodiment will be described. First, as shown in FIG. 6, the insert core metal 10 unwound from the coiler 2
3 is supplied to the extrusion die unit 5 through the forming roll 3 and the detection roll 4, and is extrusion-molded integrally with the resin into the above-described cross-sectional shape. The extruded molding material is sent to the cutting device 8 by the take-up machine 7 through the cooling tank 6, and is cut into a predetermined length there.

At this time, the feed amount of the insert core metal 103 detected by the detection roll 4 is applied to the control device 9, and based on the input signal, the extrusion die device 5 and the cutting device 8 are fed. The operation timing is determined, and the operation signal is output from the control device 8 to each of the devices 5 and 8. The detection roll 9 may be arranged at any position as long as it can detect the amount of movement or movement of the material, and can be arranged either before or after the take-up machine 7, for example.

The molding die provided in the extrusion die unit 5 will be described below. The molding die includes a die for extrusion-molding the molding 1, and the configuration of this die is shown in FIGS. 2 to 5. The die in this apparatus includes a fixed die 20 and a rotary die 30 attached to the fixed die 20.

An extrusion passage 201 is formed through the fixed die 20 to push out the molding 1. The push-out passage 201 has an opening shape with a rectangular cross-section, the rear side portion on the right side of FIG. 3 has a relatively large passage shape, and the opening portion on the left side of FIG. 3 is slightly narrowed. The rotary die 30 has a substantially cylindrical shape, and a portion corresponding to about a half circumference is the extrusion passage 2.
While being exposed from the opening 01, the remaining half-circle equivalent portion is inserted inside the extrusion passage 201. The extrusion passage 201 is narrowed toward the opening side by the inner peripheral wall portion of the rotary die 30,
The opening of the extrusion passage 201 has the cross-sectional shape of the molding 1 described above.

The rotary die 30 is rotatably supported by a support shaft 5 extending in a direction orthogonal to the extrusion direction (left direction in FIG. 3). More specifically, the rotary die 30 is
It has an extrusion cam portion 301 having a slightly small-diameter cylindrical shape, and partition plates 302 and 302 provided on both sides of the extrusion cam portion 301 and made of thin circular plates having a slightly large diameter. Each partition plate 302 is attached so as to rotate while closely contacting both side walls of the extrusion passage 201 of the fixed die 20, and the partition plate 302 and the extrusion passage 201 both sides of the molding die 1 in the width direction. Is defined. The partition plate 302 has a constant cross-sectional shape in the circumferential direction, and a constant side wall is always defined regardless of the rotation position of the partition plate 302.

On the other hand, a cylindrical outer peripheral surface of the extrusion cam portion 301,
The exterior surface shape of the molding 1 is defined between the extrusion passage 201 and the wall surface on the lower front side. First, the basic cylindrical outer peripheral surface 301a of the extrusion cam portion 301 defines a space having a substantially rectangular cross section corresponding to the base portion 101 of the molding 1 described above. On the other hand, on the cylindrical outer peripheral surface of the extrusion cam portion 301, a groove 301b is formed over approximately half a circumference so as to form a substantially half-moon shape on the side surface. A substantially U-shaped space is defined. The cross-sectional shape of the groove 301b at the deepest portion is a U-shape corresponding to the shape-constant portion 102a of the protruding portion 102 of the molding 1 described above, and both sides of the deepest portion are about 1/4.
The groove depth of the groove 301b extending over the circumference is gradually shallowed along the circumferential direction.

Therefore, first, when the rotary die 30 is in the position shown in FIGS. 2 and 3, the outer peripheral surface shape of only the base portion 101 of the molding 1 is extruded by the cylindrical outer peripheral surface 301a of the extrusion cam portion 301. It is defined by the division. When the rotary die 30 is rotated 90 degrees from the state shown in FIGS. 2 and 3 and is in the position shown in FIGS. 4 and 5, the molding 1 is made by the cylindrical outer peripheral surface 301a of the extrusion cam portion 301. The outer surface shape of the base portion 101 of the vehicle is defined in the extrusion opening, and at the same time, the groove 301b defines the outer surface shape of the protrusion 102 of the molding 1 in the extrusion opening. That is, at the position shown in FIG. 2 and FIG. 3, the flat molding 1A consisting only of the base 101 is extruded, and at the position shown in FIG. 4 and FIG. The constant shape portion 102a of the protruding molding 1B thus formed is extruded. Further, at the intermediate position between them, the shape changing portion 1 of the protruding molding 1B is formed.
02b is extruded.

When the molding 1 is extrusion-molded by such a manufacturing apparatus, the core metal 103 is supplied into the extrusion passage 201 of the fixed die 20 and the rotary die 30 is appropriately rotated. That is, by rotating the rotary die 30 in the circumferential direction, the opening shape and the opening area of the extrusion opening in the extrusion passage 201 of the fixed die 20 are changed as described above. Therefore, the rotating die 3
By performing extrusion molding while appropriately selecting the rotational position of 0, the molding 1 is molded in series while the cross-sectional shape of the protrusion 102 is continuously changed. Further, at this time, by extruding while rotating the rotary die 30, the cross-sectional shape of the protrusion 102 is gradually changed and formed in a predetermined section in the longitudinal direction.

The second aspect of the invention shown in FIGS. 7-12.
The wind molding according to the embodiment will be described. First, as shown in FIG. 12, a wind molding 32 made of a long extruded seal member is attached to the peripheral portion of the windshield 31 on the front side of the automobile. The wind molding 32 includes an upper molding 32A mounted in a gap between the roof glass 33 and an upper edge of the wind glass 31, both side edges of the wind glass 31, and a front pillar panel 34.
Side molding 32C installed in the gap between
And a curved corner molding 32B connecting the upper molding 32A and the side molding 32C. These moldings 32A, 32C and 32B are integrally and continuously extruded as described later.

The wind molding 32 is formed by integrally extruding an elastic material such as rubber or synthetic resin into a long strip shape by a molding device described later, and the peripheral portion of the wind glass 31, the roof panel 33, and the roof panel 33. It has a leg portion 321 inserted in a gap with the front pillar panel 34, and has a gap between the windshield 31 and the outside surface of the roof panel 33 and the front pillar panel 34 outside the vehicle (upper side in FIG. 3). 322 which covers from
Is equipped with. The decorative portion 322 is integrally formed on the vehicle outer side end of the leg portion 321.
1, the cross-sectional shape of the wind molding 32 orthogonal to the longitudinal direction is substantially T-shaped.

A wire core metal 323 is embedded over the entire length in a substantially central portion of the decorative portion 322. In addition, a support portion 324 that bulges toward the lower surface side of the window glass 31 is provided on the inner peripheral side of the inside edge (lower edge in the figure) of the leg portion 321.
Further, a flexible elastic lip piece 325 protruding toward the vehicle body panels 33, 34 is provided on the outer peripheral side of the leg portion 321 on the vehicle inner side edge (lower end edge in the drawing) over the entire length. It is formed in a cross-sectional shape. The support part 3
An engaging step portion 324a is formed at a tip end portion of the window 24 so as to be fitted to a ridge line portion of the windshield 31 on the vehicle inner side (lower side in the drawing).

On the other hand, the decorative portion 322 includes a window glass side decorative portion 322a extending from the vehicle outer side end (upper end in the figure) of the leg portion 321 to the wind glass 31 side and the vehicle body panels 33 and 34 side, and a vehicle body panel. Side decoration part 32
2b and. Wind glass side decorative portion 322a
Is a lip-shaped member that comes into contact with the outer surface of the window glass 31 on the vehicle exterior side, and is also a vehicle body panel side decorative portion 322b.
Is a lip-shaped member that comes into contact with the vehicle exterior surfaces of the vehicle body panels 33 and 34. The tip portion of the window glass side decoration portion 322a and the engagement step portion 32 of the support portion 324.
The peripheral edge portion of the window glass 31 is received between the window glass 4 and 4a.

Each part of the wind molding 32, that is, the leg part 321, the support part 324, the elastic lip piece 325 and each part of both the decorative parts 322a and 322b are basically formed in the same cross-sectional shape over the entire length. This corresponds to that the outer surface of the windshield 31 and the outer surface of the vehicle body panels 33 and 34 are in a uniform step relationship over the entire length of the wind molding 32, but from the corner molding 32B. In the side molding 32C, the protrusion 326 is integrally bulged toward the vehicle outer side (upper side in the drawing) with respect to the window glass side decorative portion 322a as the base. The cross-sectional shape of the protrusion 326 orthogonal to the molding longitudinal direction is changed along the longitudinal direction. The structure of the protrusion 326 will be described below.

The projection 102 has an inverted V-shaped cross section orthogonal to the longitudinal direction, and the inverted V-shaped cross section changes along the longitudinal direction. That is, first, in the region below the center portion of the side shown in FIG. 11, the protrusion 326 that is maximally bulged toward the outside of the vehicle is maintained in a constant cross-sectional shape. The corner molding 32B shown in FIG. 9 from the upper side of the side molding 32C shown.
Over time, the amount of bulging of the protrusion 326 gradually decreases. The protruding portion 326 disappears from the corner molding 32B to the upper molding 32A.

At this time, the projection 326 is bulged so as to incline toward the inside of the windshield 31, and the inner peripheral side wall surface 326a forms a weir for receiving rainwater on the windshield 31. There is. The size of the weir formed by the protruding portion 326 is equal to that of the protruding portion 32.
Corresponds to a bulge height of 6. That is, from the middle part (see FIG. 9) of the corner molding 32B to the protrusion 32
While the weir by 6 is exposed, the weir by the protrusion 326 is gradually raised in the portion near the corner of the side molding 32C (see FIG. 10),
A weir having the maximum size is constructed at a substantially central portion (see FIG. 11) in the longitudinal direction of the side molding 32C. Further, the lower side portion is maintained at a constant bulge size.

When attaching the wind molding 32, the wind molding 32 is first attached to the peripheral edge of the wind glass 31. At this time, from the upper peripheral edge of the windshield 31 to the corner peripheral edge, a portion between the support portion 324 of the upper molding 32A and the windshield side decorative portion 322a is fitted, and the side peripheral edge of the windshield 31 is attached. , The supporting portion 324 of the side molding 32C
And the window glass side decorative portion 322a is fitted.

On the other hand, a strip-shaped dam rubber 35 is fixed on the flanges 33b, 34b on the side of the vehicle body panels 33, 34, and an adhesive 36 is extruded to fill the outer peripheral surface of the dam rubber 35. Then, the in-vehicle side surface of the wind glass 31 with the wind molding 32 mounted thereon is brought into contact with and pressed against the dam rubber 35. Thereby, the support portion 3 of the wind molding 32
24 is fixed by an adhesive 36, and the elastic lip pieces 325 are elastically contacted with the inclined walls 33a and 34a in a state of being bent in an L shape. This elastic lip piece 325
The elastic repulsion due to the bending of the wind molding 3
Acts as a fixing force of 2. In this way, the window glass 31 is provided with the flange portion 33 on the vehicle body panel 33, 34 side.
It is fixed on b and 34b at a substantially uniform height all around. The wind molding 32 is attached to the outer surface of the wind glass 31 and the surfaces of the vehicle body panels 33 and 34 so as to have a constant relationship over the entire length.

In such a vehicle body side mounting structure of the windshield 31, the rainwater dripping on the windshield 31 is guided to the inner peripheral wall surface of the windshield side decorative portion 322a to flow in a predetermined direction, and the side portion. The rainwater collected at is guided by a weir constructed by the protrusion 326 and flows out.

The window molding 32 may be inserted into the window frame side while being attached to the window glass 31, or the window glass 31 may be inserted into the window frame side in advance and then the window glass 31 may be inserted. The wind molding 32 may be inserted in a gap between the peripheral edge and the vehicle body panels 33, 34.

The window molding 32 according to the second embodiment as described above is similarly extrusion-molded by a molding die having a rotary die similar to the above-mentioned extrusion die device. That is, the upper molding 3 of the wind molding 32 is changed while changing the bulge amount of the protrusion 326.
2A, side moldings 32C, and corner moldings 32B are extrusion-formed in series.

[0032]

As described above, according to the present invention, extrusion is performed while continuously changing the opening area of the extrusion opening portion of the die at a predetermined timing, and the cross-sectional shape of the protrusion is determined by a predetermined section in the longitudinal direction. Since a belt-shaped vehicle molding is formed in a series so as to be gradually changed in between, a vehicle molding having a smooth surface shape and excellent in decorativeness and safety is subjected to a process such as cutting or applying. It is possible to mold continuously without waste.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a structure of a vehicle molding according to an embodiment of the present invention.

FIG. 2 is a front view showing the structure of a die for extrusion-molding the vehicle molding shown in FIG.

3 is a vertical cross-sectional explanatory view showing the structure of the die shown in FIG.

FIG. 4 is an explanatory front view showing a moving state of the die shown in FIGS. 2 and 3;

FIG. 5 is a vertical cross-sectional explanatory view showing a moving state of the die shown in FIGS. 2 and 3;

FIG. 6 is a side view showing an example of an extrusion molding apparatus for extrusion molding the vehicle molding shown in FIG.

FIG. 7 is a partially exploded perspective view showing a structure near a corner portion of a molding according to another embodiment of the present invention.

8 is a cross-sectional view taken along the line AA in FIG.

9 is a cross-sectional view taken along the line BB in FIG.

10 is a cross-sectional view taken along the line CC in FIG.

11 is a cross-sectional view taken along the line DD in FIG.

FIG. 12 is an external perspective view showing the front side of an automobile to which the present invention is applied.

[Explanation of symbols]

1,32 molding 101 base 102,326 protrusion 20 fixed die 30 rotating dies 201 Extrusion passage 301 Extrusion cam part 301a cylindrical outer peripheral surface 301b groove 322 decoration

Claims (3)

[Claims] 1. A base, which is a long strip-shaped extruded member that is mounted at a predetermined position on a main body panel, is fixed to the main body panel side, and bulges outward from the base toward the outside of the vehicle. A molding for a vehicle, comprising: a protrusion, wherein the cross-sectional shape of the protrusion orthogonal to the longitudinal direction of the molding is changed along the longitudinal direction, wherein the protrusion is a predetermined section in the longitudinal direction of the molding. A molding for a vehicle, wherein the molding is integrally molded with the base so that the cross-sectional shape is gradually changed between the moldings, and the molding has a total length formed in series. 2. A long strip molding is extruded using a die having an opening for extruding a protrusion that bulges outward from the base fixed to the body panel side. In the method for manufacturing a vehicle molding described above, the opening area of the extrusion opening of the die is continuously changed at a predetermined timing so that the cross-sectional shape of the protrusion is gradually changed between predetermined sections in the molding longitudinal direction. A method for manufacturing a vehicle molding, characterized in that extrusion is carried out while changing the above to form a band-shaped molding in series. 3. A manufacturing apparatus for a vehicle molding, comprising a die integrally extruding a base portion fixed to a main body panel side and a protrusion portion bulging toward the vehicle outer side from the base portion. A cam-shaped rotary die for changing the opening shape of the extrusion opening by rotational movement in the extrusion opening of the die so as to gradually change the cross-sectional shape of the section during a predetermined section in the molding longitudinal direction. An apparatus for manufacturing a molding for a vehicle, wherein: