JP2000326390A - Apparatus and method for producing window molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a window molding variable in its cross-sectional shape by a simple mechanism and to ensure the bonding strength of the cross-sectional variable part of the molding. SOLUTION: The upper molding part 18 of an extruded window molding 12 wherein a support part 26 and a lower molding part 28 are bonded is pressed by a press roller 74. When the support part 26 is made longest and the press roller 74 is positioned at the uppermost part, the upper molding part 18 is pressed by the own weight of a weight plate 82 and that of a slide plate 84 in such a state that the air pressure of an air cylinder 92 is set to zero and air pressure is raised as the support part 26 becomes short to press the upper molding part 18 and, in a process wherein the support part 26 becomes long after the support part 26 disappears, air pressure is set to zero and the upper molding part is pressed under the own weights of both plates 82, 84. By utilizing the pressure roller 74 and the own weights of the members annexed thereto, the pressure force of the pressure roller 74 can be optimized without performing complicated control.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for manufacturing a window molding for closing a gap formed between a peripheral portion of a window glass of an automobile and a window frame of a body.

[0002]

2. Description of the Related Art As shown in FIG.
An upper molding portion 112 and a lower molding portion 114 are provided in a window molding 110 for closing a gap formed between a peripheral portion of the vehicle body and a window frame of the body so that rainwater blown out by the wiper does not flow into the side of the vehicle. And a rain garter G is formed between them.

[0003] The strut portion 1 constituting the rain garter G
In order to improve the aerodynamic characteristics when the vehicle is traveling, the size of the front pillar portion is gradually reduced from the lower portion to the upper portion, and the roof portion has a window molding structure without the support portion 116 (no rain garter G). ing.

[0004] As an apparatus for manufacturing the window molding 110 having such a variable cross section, a first molding for forming an upper molding section 112 and a support section 116 as shown in FIG.
There is a manufacturing apparatus in which a metal mold 118 and a second metal mold 120 for molding the lower molding portion 114 are arranged at a predetermined distance.

In this manufacturing apparatus, the length of the column portion 116 is adjusted by cutting the column portion 116 by the cutter 122 depending on whether it corresponds to the front pillar portion or the roof portion. By linking 120, the cut surface of the support portion 116 and the upper surface of the lower molding portion 114 are controlled to be at the same height, and the cut surface of the support portion 116 and the lower molding portion 114 are joined to form a partial cross section. Different window moldings 110 are continuously manufactured.
0-109346).

However, in this manufacturing apparatus (so-called two-type system), the movement of the cutter 122 is linked to the second
The mold 120 has to be moved up and down, and the apparatus has been increased in size. In addition, in the method in which the support 116 and the lower molding 114 are joined together by overlapping, the window molding 110
Although there is no risk of deformation, the bonding strength may be insufficient. Further, there is a method of molding window moldings having different cross-sectional shapes by using one mold (so-called one-mold system), but the mold structure becomes very complicated.

[0007]

SUMMARY OF THE INVENTION In view of the above facts, the present invention provides a window molding manufacturing apparatus which can manufacture a window molding having a variable cross-sectional shape with a simple mechanism and can guarantee the joining force of a variable cross-sectional shape portion. It is an object to provide a manufacturing method.

[0008]

According to the first aspect of the present invention, a window molding to be mounted in a gap between a peripheral portion of a windshield of an automobile and a window frame of a body is manufactured. In this window molding, the strut section connecting the upper molding section and the lower molding section is variable from the front pillar section to the roof section, and the front pillar section has a longer supporting section to form a rain gutter, and the roof section has a supporting section. Was removed and the rain gata disappeared.

In this window molding, first, an upper molding portion and a support portion are integrally extruded from a first mold. The support | pillar part extruded from this 1st metal mold | die is partially cut off with a cutter, and length is adjusted.

Then, the upper molding portion and the supporting column portion whose length of the supporting column portion is adjusted are taken into the second mold, overlapped with the extruded lower molding portion, and extruded from the second molding die.
The column and the lower molding are joined.

Next, the upper molding portion of the joined window molding is pressed by a roller. Since the pressing force of this roller is increased or decreased by the air cylinder according to the length of the support portion, the pressing force becomes optimal, and the support portion in the high temperature softened state and the lower molding portion are securely joined without being deformed. .

Further, unlike the related art, there is no need to take a complicated structure such as moving the second mold by linking to the cutter provided on the first mold, so that the mechanism can be simplified. .

According to the second aspect of the present invention, when the support portion is the longest and the roller is at the uppermost position, the upper molding portion is pressed with the air pressure of the air cylinder set to 0, thereby shortening the support portion. The air pressure is increased and pressed in accordance with the above, and the air pressure is reduced to 0 in the process of elongating the strut after the strut disappears.
And

As described above, by utilizing the own weight of the roller and the members attached thereto, the pressing force of the roller can be optimized without complicated control. Further, fine adjustment is possible by adjusting the pressing force of the roller with air pressure.

According to the third aspect of the present invention, first, the length of the pillar portion integrally extruded from the first mold together with the upper molding portion is adjusted by adjusting the length. Next, the upper molding part and the support part are taken into the second mold, and are overlapped and extruded with the extruded lower molding part. Here, the roller whose pressing force is adjusted by the air pressure in accordance with the length of the support portion,
Press the upper molding part extruded from the mold.

Then, the window molding in the joined and high-temperature state is inserted into the sizing, and shaped into a window molding that matches the design mold hole. Then, it is cooled in a water tank and becomes a finished product.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS.
The window molding 12 manufactured by the window molding manufacturing apparatus 10 according to the present embodiment is mounted between the peripheral portion of the windshield 14 and the window frame 16 of the body.

The upper molding portion 18 of the window molding 12 has an inner lip 2 extending toward the windshield 14.
0 and an outer lip 22 extending in the direction of the window frame 16, and has a parasol-shaped cross section. And the outer lip 22
Is elastically locked to the upper surface of the window frame 16 of the body.

The upper molding portion 18 has a metal wire 2
4 is buried in the longitudinal direction, and suppresses the longitudinal extension of the window molding 12. Also, a glitter tape 25 for decoration is provided at the center of the upper surface of the upper molding portion 18.
Is buried.

A column 26 having a variable height is integrally formed on the lower surface of the upper molding portion 18.
6 connects the upper molding part 18 and the lower molding part 28. The lower molding part 28 includes the windshield 14 and the window frame 1.
6 is provided with a leg portion 30 located in a gap between the leg portion 30. Leg 30
A glass lip 32 protrudes from the upper part toward the upper surface of the windshield 14. An anchor 34 protrudes from a lower portion of the leg 30.

The anchor portion 34, the leg portion 30, and the glass lip 32 form a U-shaped cross section, and are fitted to the outer peripheral portion of the windshield 14.

The window frame 16 extends from the middle of the leg 30.
A panel lip 31 protrudes toward the side, and abuts and locks on the vertical surface of the window frame 16.

On the other hand, as shown in FIG.
A so-called rain garter G is formed by the inner lip 20 of the upper molding portion 18 and the glass lip 32 of the lower molding portion 28.
Is composed. The rain garter G prevents the rainwater of the windshield 14 that has been wiped off by the wiper from flowing into the side of the vehicle.

As shown in FIG. 4, the strut portion 26 is elongated at the lower portion of the front pillar portion so that the rain garter G
It has a deep pocket and no rainwater overflows. Also,
The support portion 26 is gradually shortened over the roof portion.
As shown in the figure, the pillar 26 has disappeared in the roof. As a result, the aerodynamic characteristics when the vehicle is running become better,
There is no wind noise.

The window molding 12 composed of the upper molding part 18, the support part 26, and the lower molding part 28 is integrally molded in multiple colors and has a length covering the entire periphery of the window frame 16. .

Next, an apparatus for manufacturing a window molding will be described.

As shown in FIG. 1, a first mold as a first mold
The extrusion die 36 is formed with an extrusion hole 38 having the shape of the upper molding portion 18 of the window molding 12 and the column 26 having the largest height. Also, the first extrusion die 36
Includes a crosshead 40 and a crosshead 42
The extruder 44 is connected through the. Further, extruders 46 and 48 are connected to the first extrusion die 36.

The extruder 44 supplies a hard resin material that forms the support 26, the extruder 48 supplies a soft resin material that forms the outer lip 22, and the extruder 46 generates a hard resin material that forms the inner lip 20. Is supplied.

A reel 50 around which the wire 24 has been wound is disposed downstream of the crosshead horizontal pull 42. The wire 24 is sent from the reel 50 to the first extrusion die 36. A reel 52 around which the glittering tape 25 is wound is disposed downstream of the reel 50, and is sent to the first extrusion die 36 together with the wire 24.

On the other hand, below the extrusion hole 38 of the first extrusion die 36, a cutter 54 that slides along a guide portion (not shown) and can shield a mold hole portion corresponding to the column portion 26 is provided. . The cutter 54 is provided with a nut portion 56. A long screw 58 rotated by a servomotor 60 is screwed into the nut portion 56. And the long screw 5
By changing the rotation direction of 8, the cutter 54 slides up and down, cuts off the lower part of the column 26 in the high temperature softened state, and extends from the front pillar to the roof.
The window molding 12 in which the support 26 gradually changes is continuously formed integrally.

The driving timing of the cutter 54 is determined by controlling the number of rotations of a conveyor which is disposed downstream of a water tank 62 described later and holds and conveys the window molding 12 as a product.
Detected by the rotary encoder, the controller 64 determines the gradually changing portion of the window molding 12 from the detected data, and rotates the servomotor 60 forward and backward.

On the other hand, on the downstream side of the first extrusion die 36,
A second extrusion die 64 as a second mold is provided. The second cross head 70 is connected to the second extrusion die 64. Further, extruders 66 and 68 are connected to the second crosshead 70, and further, a passage (not shown) communicating with the second extrusion die 64 is provided.

The extruder 66 supplies a hard resin material as the leg portion 30, the glass lip 32, and the anchor portion 34, and the extruder 68 supplies a soft resin material as the panel lip 31. .

Further, a guide groove (not shown) for guiding the support portion 26 of the upper molding portion 18 is formed on the upstream side of the second crosshead 70. The upper molding portion 18 taken into the second extrusion die 64 through the guide groove.
Is superimposed on the upper surface of the glass lip 32 of the lower molding portion 28 which is extruded in synchronization, and the window molding 12 as a product is continuously extruded from the extrusion hole 72.

On the other hand, as shown in FIG. 2, above the extrusion hole 72, a pressing roller having a narrower width than the glittering tape 25 and having an arc-shaped concave portion 74A formed on the outer peripheral surface following the shape of the glittering tape 25 is formed. 74 are arranged. This pressing roller 7
4 is a rotating shaft 80 whose end is fixed to an L-shaped shaft plate 78.
The upper molding portion 18 is rotatably supported via a bearing (not shown), and uniformly presses the upper molding portion 18 toward the lower molding portion 28 while rotating on the glittering tape 25.

The shaft plate 78 is connected to a slide plate 84 via a weight plate 82. Slide plate 8
A guide groove 86 is formed on the back surface of 4. The guide groove 86 is slidably engaged with a guide member 88 disposed in a vertical direction of the mounting plate 90.

On the upper surface of the slide plate 84,
The rod 94 of the air cylinder 92 is connected. The cylinder portion 96 of the air cylinder 92 is attached to the mounting plate 9.
It is attached to a bracket 98 fixed to zero.

Compressed air from a compressor (not shown) is supplied to the air cylinder 92 through an electromagnetic valve, and the air pressure applied to the pressing roller 74 is adjusted by opening and closing the electromagnetic valve.

In such a configuration, when the air cylinder 92 is not driven, the load acting on the upper molding portion 18 through the pressing roller 74 is not only the weight of the pressing roller 74 but also the shaft plate 78, the weight plate 82, and the slide. The weight of the plate 84 and the like can be adjusted by changing the weight of the weight plate 82.

Further, a sizing 100 is arranged downstream of the second extrusion die 64. Sizing 1
The insertion side of the sizing hole 102 of 00 is the same shape as the window molding 12 and is widened as a whole, so that the window molding 12 which is slightly expanded in a high temperature state is easily inserted. The design size of the window molding 12 is set. Therefore, the window molding 12 that has passed through the sizing hole 102 of the sizing 100 is gradually shaped to a product size.

The sizing hole 102 is formed with a mold hole for forming the upper molding portion 18 and the column portion 26 and the lower molding portion 2.
8 is divided into mold holes. Then, the drive unit 104 provided on the upper part of the sizing 100 changes the position of the mold hole corresponding to the upper molding part 18 according to the height of the support part 26. The height of the support 26 is the second
Detected by the synchronization sensors 106 and 108 provided on the extrusion die 64 and the sizing 100,
4 is output. Based on this result, the controller 64 drives the servo motor 106 to
Of the sizing hole 102 corresponding to the height of the sizing hole 102.

Finally, the window molding 12 is cooled in the water tank 58 (see FIG. 5) to form a continuous window molding 12 having a designed size.

Next, a method of controlling the pressing roller 74 will be described.

Since the pressing force of the pressing roller 74 shown in FIG. 1 is increased or decreased by the air cylinder 92 in accordance with the length of the support 26, the pressing force is optimal, and the support 26 and the lower molding 28 are deformed. It is securely joined without any.

That is, as shown in FIG.
Is the longest, and when the pressing roller 74 is at the uppermost position, the controller 64 sets the air pressure of the air cylinder 92 to zero. At this time, the load acting on the upper molding portion 18 is the own weight of the pressing roller 74 and the weight of the mechanism itself of the shaft plate 78, the weight plate 82, and the slide plate 84.

The controller 64 increases the air pressure of the air cylinder 92 as the length of the support 26 becomes shorter, based on the detection results of the synchronous sensors 106 and 108. This is because the joining force between the support 26 and the lower molding 28 cannot be secured only by the weight of the mechanism itself. Although a detailed analysis is required for this cause, it is presumed that a force for pushing down the wire 24 embedded in the lower part of the upper molding part 18 is required.

On the other hand, as shown in FIG. 3, when the support 26 disappears for a certain period (a portion corresponding to a loop) and then the support 26 appears, the air pressure of the air cylinder 92 is reduced to zero. . As a result, the force pressing the upper molding portion 18 becomes the weight of the mechanism itself, and is pushed up as the support portion 26 becomes higher, and the pressing roller 74 rises upward.

In this embodiment, the cutter is driven on the basis of the feed amount of the window molding as a product. However, the feed amount of the wire or the glitter tape is detected, and the drive timing of the cutter or air pressure is applied to the pressing roller. The driving of the air cylinder for applying the pressure may be controlled.

[0049]

According to the present invention having the above-described structure, a window molding having a variable sectional shape can be manufactured by a simple mechanism.
In addition, the joining force of the section having a variable cross-sectional shape can be guaranteed.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a window molding manufacturing apparatus according to an embodiment.

FIG. 2 is a perspective view showing the movement of a pressing roller of the apparatus for manufacturing a window molding according to the present embodiment.

FIG. 3 is a perspective view showing the movement of a pressing roller of the apparatus for manufacturing a window molding according to the present embodiment.

FIG. 4 is a schematic perspective view showing an attached state of a window molding manufactured by the window molding manufacturing apparatus according to the embodiment.

FIG. 5 is a cross-sectional view showing a state where there is a support portion of a window molding manufactured by the window molding manufacturing apparatus according to the present embodiment.

FIG. 6 is a cross-sectional view showing a state in which a window molding manufactured by the window molding manufacturing apparatus according to the present embodiment has no support portion.

FIG. 7 is a schematic perspective view showing an attached state of a conventional window molding.

FIG. 8 is a cross-sectional view of a conventional window molding manufacturing apparatus.

[Explanation of symbols]

 36 First extrusion die (first mold) 64 Second extrusion die (second mold) 54 Cutter 74 Press roller (roller) 92 Air cylinder

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B29L 31:30 (72) Inventor Yoshio Kaneko 184 Maiokacho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Nifco Corporation ( 72) Inventor Tohru Sugita 184-1, Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture (72) Inventor Masaharu Shibao 184-1, Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Nifco Inc. (72) Inventor Yasushi Yamamoto 184-1, Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture (72) Inventor Katsuyasu Tomichi 184-1, Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Nifco, Inc. (72) Shuichi Sekine Senju, Adachi-ku, Tokyo 17-15-2-403 Sekiya-cho (72) Inventor Motonobu Nakamura 6-7-17 Kamiooki, Kawaguchi-shi, Saitama F-term (reference) 3D023 AA01 AB01 AC26 AD02 AD2 2 AD31 3D024 AA21 AB05 AB21 AB24 AB57 AC07 4F207 AH23 AR02 AR12 KA01 KB11 KB13 KB22 KK88 KM16 4F213 AH23 AR02 AR12 WA06 WA33 WA54 WA97 WB02 WB11 WB13 WB22 WK01

Claims (3)

[Claims] An apparatus for manufacturing a window molding, which is mounted in a gap between a peripheral portion of a windshield of an automobile and a window frame of a body and has a variable supporting portion connecting an upper molding portion and a lower molding portion, wherein: A first mold in which the support portion is integrally formed by extrusion; a cutter for partially cutting off the support portion extruded from the first mold to adjust the length; the upper molding portion and the support portion And a second mold that overlaps and extrudes with the extruded lower molding portion, a roller that presses the upper molding portion extruded from the second mold, and a pressing force of the roller that is applied to the support portion. And an air cylinder that increases or decreases according to the length of the window molding. 2. When the support portion is the longest and the roller is at the uppermost position, the upper molding portion is pressed with the air pressure of the air cylinder set to 0, and the air pressure increases as the support portion becomes shorter. 2. The apparatus according to claim 1, wherein the air pressure is reduced to zero during the process of elongating the support after the support has been pressed and the support has disappeared. 3. 3. A method of manufacturing a window molding which is mounted in a gap between a peripheral portion of a windshield of an automobile and a window frame of a body and has a variable supporting portion connecting an upper molding portion and a lower molding portion. A step of adjusting the length by partially cutting off the pillar part integrally extruded with the upper molding part, taking the upper molding part and the pillar part into a second mold,
A step of superimposing and extruding with the extruded lower molding portion, and pressing the upper molding portion extruded from the second mold with a roller whose pressing force is adjusted by air pressure according to the length of the column portion. A method for manufacturing a window molding, comprising: