JPH072031A - Side protector molding for automobile and manufacture thereof - Google Patents

Side protector molding for automobile and manufacture thereof

Info

Publication number
JPH072031A
JPH072031A JP2350594A JP2350594A JPH072031A JP H072031 A JPH072031 A JP H072031A JP 2350594 A JP2350594 A JP 2350594A JP 2350594 A JP2350594 A JP 2350594A JP H072031 A JPH072031 A JP H072031A
Authority
JP
Japan
Prior art keywords
molten resin
molding
mold
cored bar
core metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2350594A
Other languages
Japanese (ja)
Other versions
JP3226408B2 (en
Inventor
Renji Maki
錬司 真木
Toshikazu Ito
俊和 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokai Kogyo Co Ltd
Original Assignee
Tokai Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokai Kogyo Co Ltd filed Critical Tokai Kogyo Co Ltd
Priority to JP02350594A priority Critical patent/JP3226408B2/en
Publication of JPH072031A publication Critical patent/JPH072031A/en
Application granted granted Critical
Publication of JP3226408B2 publication Critical patent/JP3226408B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

PURPOSE:To provide a side protector molding for automobile which possesses the high rigidity for an external force and can reduce the flow resistance of the molten resin in production. CONSTITUTION:A core metal 1 has a recessed part 1b extending in the longitudinal direction on the surface side. The molten resin P is jetted from an injection port 5 positioned at one edge of the recessed part 1b to the surface of the core metal 1 positioned in metal molds 3 and 4. The injection quantity is less than the capacity which is division-formed by the surface of the core metal 1 and the shaping surfaces 3a and 4a of the metal molds 3 and 4. Inert gas is poured under a preper pressure into the molten resin P which is jetted the recessed part. Inert gas allows the molten resin P which is imperfectly charged to flow toward the other edge of the recessed part 1b, and allows the molten resin P to flow toward the other edge of a cavity part E. The pressure of the inert gas acts until the molten resin P is hardened. After the hardening of the molten resin P, the metal molds 3 and 4 are opened, and then a long hollow shaped side molding M1 is shaped.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、自動車の側面のドア等
の最外部に取り付けられる自動車用サイドプロテクター
モールに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side protector molding for an automobile, which is attached to the outermost part of a side door of an automobile.

【0002】[0002]

【従来の技術】従来、自動車用サイドプロテクターモー
ル(以下、「サイドモール」と略す)のうち、その内周
面に補強用の芯金を密着固定したものとしては、図10
及び図11のものが知られている。サイドモールは、通
常、芯金を配した金型内に樹脂を射出して成形される。
押出し成形法やブロー成形法でもサイドモールを製造す
ることができるが、製造工数や製造コストの面で不利で
あり、専ら射出成形法が利用されている。
2. Description of the Related Art Conventionally, as a side protector molding for an automobile (hereinafter abbreviated as "side molding"), a core metal for reinforcement is closely fixed to an inner peripheral surface thereof as shown in FIG.
And that of FIG. 11 are known. The side molding is usually molded by injecting a resin into a mold having a cored bar.
The side molding can also be manufactured by an extrusion molding method or a blow molding method, but it is disadvantageous in terms of manufacturing man-hours and manufacturing costs, and the injection molding method is exclusively used.

【0003】図10に示すサイドモールm1は、円弧状
の芯金21を金型内に配し、樹脂を射出して製造され
る。モール本体22の内側に芯金21が密着固定され
る。この構成のものでは、自動車の側方、即ち図示の方
向の外力Fに対して撓み易い欠点がある。
The side molding m1 shown in FIG. 10 is manufactured by placing an arc-shaped core bar 21 in a mold and injecting a resin. The cored bar 21 is closely fixed to the inside of the molding body 22. This structure has a drawback that it is easily bent by an external force F in the lateral direction of the automobile, that is, in the direction shown in the drawing.

【0004】これに対し、図11に示すサイドモールm
2は、幅方向の両端部の内側に相対向する曲げ部32
a,32aがそれぞれ形成されたC字状の芯金31を金
型内に配し、樹脂を射出して製造される。モール本体3
2の内側に芯金31が密着固定される。この構成のもの
は自動車の側方、即ち図示の方向の外力Fに対しての剛
性は高まるが、この構成を実現するための成形上の不利
益がある。即ち、モール本体32の内側に密着固定され
る芯金31の曲げ部を型抜きするためのスライド型が不
可欠となって、金型の構造が複雑となり、ひいてはその
製作費が高価となる。
On the other hand, the side molding m shown in FIG.
2 is a bent portion 32 that is opposed to the inside of both ends in the width direction.
It is manufactured by placing a C-shaped core metal 31 on which a and 32a are respectively formed in a mold and injecting a resin. Mall body 3
A core metal 31 is closely fixed to the inner side of 2. With this structure, the rigidity with respect to the external force F in the lateral direction of the automobile, that is, the direction shown in the figure is increased, but there is a molding disadvantage for realizing this structure. That is, a slide die for punching out the bent portion of the cored bar 31, which is closely fixed to the inside of the molding body 32, becomes indispensable, the structure of the die becomes complicated, and the manufacturing cost thereof becomes expensive.

【0005】[0005]

【発明が解決しようとする課題】金型の構造が複雑にな
ると、生産効率が低下する。上下開きのような単純な構
造の金型を利用してサイドモールを製造することの方が
優先される。従って、芯金の断面形状を波型等にして、
外力に耐え得るサイドモールを製造することが好まし
い。
When the structure of the mold becomes complicated, the production efficiency decreases. Manufacturing a side molding using a mold having a simple structure such as opening and closing is given priority. Therefore, the cross-sectional shape of the cored bar is corrugated,
It is preferable to manufacture a side molding that can withstand an external force.

【0006】ところが、芯金の断面形状を波型等にする
と、樹脂と芯金の接触面積が増大して、樹脂の流動性を
悪化させる。特に、サイドモールのような比較的薄い部
品では樹脂圧が増加し、サイドモールの外面に波状模様
が残ったり、射出口付近にバリが発生したりする。ま
た、サイドモールが長くなると、例えば、60cm以上に
なると、樹脂は増大する流動抵抗により先端まで到達す
ることができない。
However, when the core metal has a corrugated cross-sectional shape, the contact area between the resin and the metal core increases, which deteriorates the fluidity of the resin. Particularly, in a comparatively thin part such as a side molding, the resin pressure increases, and a wavy pattern remains on the outer surface of the side molding, or burrs occur near the injection port. If the side molding becomes long, for example, 60 cm or more, the resin cannot reach the tip due to the increased flow resistance.

【0007】本発明の目的は、外力に耐え得る強度を具
えていること、外面(装飾面)が美しいこと、金型の構
造が単純であること、射出時に樹脂の流動抵抗が小さい
ことというこれらの要求を全て満足するサイドモールを
提供することにある。
The object of the present invention is to have a strength capable of withstanding an external force, to have a beautiful outer surface (decorative surface), to have a simple mold structure, and to have a small resin flow resistance during injection. To provide a side mall that satisfies all of the above requirements.

【0008】[0008]

【課題を解決するための手段】本発明は、表面側におい
て長手方向に延びる凹部を具えた芯金と、該芯金に密着
固定されたモール本体とを有してなり、前記凹部に密着
固定されるモール本体が中空射出成形法による中空肉厚
部として形成されている自動車用サイドプロテクターモ
ールにより前記課題を解決した。
According to the present invention, there is provided a cored bar having a recess extending in the longitudinal direction on the front surface side, and a molding body closely fixed to the cored bar. The above-mentioned problems are solved by an automobile side protector molding in which the molding body is formed as a hollow thick portion by a hollow injection molding method.

【0009】この種の自動車用サイドプロテクターモー
ルは、表面側において長手方向に延びる凹部を具えた芯
金を金型内に配置し、前記芯金の凹部の一端に位置する
射出口から、前記芯金表面と前記金型成形面によって形
成される前記金型内の容積よりも少ない溶融樹脂を金型
内に射出し、溶融樹脂の射出時又は溶融樹脂の射出後、
前記凹部に充填された溶融樹脂にガスを注入して製造さ
れる。
In this type of automobile side protector molding, a cored bar having a recess extending in the longitudinal direction on the front surface side is disposed in a mold, and the core is inserted from an injection port located at one end of the recessed part of the cored bar. Injecting a molten resin smaller than the volume in the mold formed by the metal surface and the mold molding surface into the mold, at the time of injecting the molten resin or after injecting the molten resin,
It is manufactured by injecting a gas into the molten resin filled in the recess.

【0010】[0010]

【作用】芯金に凹部を設けて、横断面の断面係数の大な
る形状としたことにより、外力に対する剛性が高まる。
しかも、金型は上下開きの単純な構造のものでよい。こ
のような形状の芯金を採用することにより、溶融樹脂の
流動抵抗が大きくなるが、凹部に密着固定されるモール
本体を中空射出成形法による中空肉厚部として形成する
ことにより、凹部内を流動する溶融樹脂の流動抵抗を小
さくすることができる。溶融樹脂は、射出圧、及び、そ
れに注入されるガス圧によって、専ら凹部内を流動して
金型内に広がる。ガス圧は溶融樹脂に対して均一に作用
するので、凹部に対応するモール本体の外面は金型内に
圧着される。モール本体の外面において、ヒケ、ソリな
どの発生を防止でき、美しい外観のサイドモールを得る
ことができる。
By providing the core metal with the concave portion so that the cross-section has a large section modulus, the rigidity against external force is increased.
Moreover, the mold may have a simple structure that opens up and down. By adopting a cored bar having such a shape, the flow resistance of the molten resin is increased, but by forming the molding body that is closely fixed to the recess as a hollow thick part by hollow injection molding, The flow resistance of the flowing molten resin can be reduced. The molten resin flows exclusively in the recesses and spreads in the mold by the injection pressure and the gas pressure injected therein. Since the gas pressure acts uniformly on the molten resin, the outer surface of the molding body corresponding to the recess is pressed into the mold. It is possible to prevent the occurrence of sink marks and warps on the outer surface of the molding body, and to obtain a side molding with a beautiful appearance.

【0011】[0011]

【実施例】以下、実施例を挙げて本発明を更に詳細に説
明する。図1は本発明のサイドモールM1を取り付けた
自動車を示す。図2〜図8は本発明のサイドモールM1
の製造法を含めた断面図であり、図9は本発明の他の実
施例のサイドモールM2を示す断面図である。
EXAMPLES The present invention will be described in more detail with reference to examples. FIG. 1 shows an automobile equipped with a side molding M1 of the present invention. 2 to 8 show the side molding M1 of the present invention.
FIG. 9 is a cross-sectional view including a manufacturing method thereof, and FIG. 9 is a cross-sectional view showing a side molding M2 according to another embodiment of the present invention.

【0012】まず、図2は本発明に使用される金属製の
芯金1を示している。芯金1は、その中央部に裏面側に
突出する逆凸状部1aを有する。表面側には凹部1bが
形成されている。芯金1は、凹部1bによって、横断面
の断面係数が大なる形状となっている。凹部1bは、芯
金1の長手方向に延びている。芯金1は、ロール成形
法、或いはプレス成形法により屈曲して成形される。こ
の芯金1の上面には接着剤Nが塗布される。
First, FIG. 2 shows a metal cored bar 1 used in the present invention. The cored bar 1 has an inverted convex portion 1a projecting to the back surface side at the center thereof. A recess 1b is formed on the front surface side. The core metal 1 has a shape having a large cross-sectional modulus of the cross section due to the concave portion 1b. The recess 1b extends in the longitudinal direction of the core metal 1. The core metal 1 is bent and formed by a roll forming method or a press forming method. An adhesive N is applied to the upper surface of the core metal 1.

【0013】次に、この芯金1は、図3に示される上下
一対に合わされる金型3,4のキャビティーC内におい
て、下金型4に嵌入保持される。芯金1は、金型3,4
を上下に型開きできる形状であるため、その金型の構造
は単純である。下金型4の成形面4aは、芯金1の裏面
に密着して嵌め合わされるように形成されており、上金
型3の成形面3aは、成形するモール本体の外面(装飾
面)に合わせて湾曲状に形成されている。
Next, the core metal 1 is fitted and held in the lower metal mold 4 in the cavities C of the metal molds 3, 4 which are paired with each other as shown in FIG. The core metal 1 is a mold 3,4
Since the mold can be opened up and down, the structure of the mold is simple. The molding surface 4a of the lower mold 4 is formed so as to be closely fitted to the back surface of the core metal 1, and the molding surface 3a of the upper mold 3 is formed on the outer surface (decorative surface) of the molding body to be molded. It is also formed in a curved shape.

【0014】図4において、芯金1の表面側に、モール
本体を成形するための原料である溶融樹脂Pが射出され
る。溶融樹脂Pは、芯金1の凹部1bの一端に位置する
射出口5(図7参照)からキャビティーC内に充填され
る。溶融樹脂Pの射出量は、芯金1の表面と金型3,4
の成形面3a,4aによって区画形成される容積よりも
少ない。すなわち、溶融樹脂PはキャビティーC内に完
全充填されない。この図4で示されるように、溶融樹脂
Pは、キャビティーCの幅方向の両端部には達しておら
ず、この部分に空隙部Eが残されている。また、溶融樹
脂Pは、凹部1bの他端にも達していない。この状態に
おいて、凹部1bに射出された溶融樹脂P内に適切な圧
力の不活性ガスが注入される。不活性ガスは、図4の垂
直方向、すなわち、芯金1の長手方向に注入される。
In FIG. 4, a molten resin P, which is a raw material for molding the molding body, is injected on the surface side of the core metal 1. The molten resin P is filled in the cavity C from the injection port 5 (see FIG. 7) located at one end of the recess 1b of the cored bar 1. The injection amount of the molten resin P is the surface of the core metal 1 and the molds 3, 4
The volume is less than the volume defined by the molding surfaces 3a and 4a. That is, the molten resin P is not completely filled in the cavity C. As shown in FIG. 4, the molten resin P has not reached both ends in the width direction of the cavity C, and a void E is left in this portion. Further, the molten resin P has not reached the other end of the recess 1b. In this state, an inert gas having an appropriate pressure is injected into the molten resin P injected into the recess 1b. The inert gas is injected in the vertical direction of FIG. 4, that is, the longitudinal direction of the core metal 1.

【0015】不活性ガスは、図5乃至図7に示されるよ
うに、専ら、凹部1bに対応する溶融樹脂Pに入り込
む。不活性ガスは、不完全充填された溶融樹脂Pを凹部
1bの他端に向って流動させるとともに、溶融樹脂Pを
空隙部Eの他端に向って流動させる。強度向上のための
凹部1bを利用して溶融樹脂Pを流動させることによっ
て、溶融樹脂Pの流動抵抗を著しく低減させることがで
きる。
As shown in FIGS. 5 to 7, the inert gas exclusively enters the molten resin P corresponding to the recess 1b. The inert gas causes the incompletely filled molten resin P to flow toward the other end of the concave portion 1b and causes the molten resin P to flow toward the other end of the void portion E. The flow resistance of the molten resin P can be remarkably reduced by causing the molten resin P to flow using the recess 1b for improving the strength.

【0016】不活性ガスの圧力は、溶融樹脂Pが硬化す
るまで作用している。この圧力は、溶融樹脂Pを芯金1
及び金型成形面3a,4aに押し付けるように作用す
る。凹部1bに充填された溶融樹脂Pは比較的肉厚とな
り、他の部分に比べて硬化が遅れる。凹部1bにおいて
は溶融樹脂Pの剪断力が小さく、不活性ガスの圧力は凹
部1bに充填された溶融樹脂Pを金型成形面3aに押し
付ける力が大きい。凹部1bにおいては溶融樹脂Pが金
型成形面3aに強く押し付けられ、モール本体の外面に
ヒケ、ソリなどの不具合の発生が防止される。
The pressure of the inert gas acts until the molten resin P hardens. This pressure applies the molten resin P to the core metal 1
And, it acts so as to be pressed against the molding surfaces 3a, 4a. The molten resin P with which the concave portion 1b is filled has a relatively thick wall, and the curing is delayed as compared with other portions. The shearing force of the molten resin P is small in the concave portion 1b, and the pressure of the inert gas has a large force to press the molten resin P filled in the concave portion 1b against the mold molding surface 3a. In the recessed portion 1b, the molten resin P is strongly pressed against the molding surface 3a of the mold, which prevents defects such as sink marks and warps on the outer surface of the molding body.

【0017】そして、溶融樹脂Pの硬化後に、前記金型
3,4を開くと、図6及び図7に示されるように、長尺
状の中空状サイドモールM1が得られる。サイドモール
M1は、図8に示すように、図1で示される自動車のド
アパネルDに対して両面テープTにより取り付けられ
る。
When the molds 3 and 4 are opened after the molten resin P is cured, a long hollow side molding M1 is obtained as shown in FIGS. 6 and 7. As shown in FIG. 8, the side molding M1 is attached to the door panel D of the automobile shown in FIG.

【0018】本発明のサイドモールM1は、芯金1に強
度向上のための凹部1bを設け、中空射出成形法のガス
通路としてその凹部1bを利用している。溶融樹脂の流
動抵抗は著しく低減されるので、長尺状のサイドモール
も継目なく一体成形することができ、しかも、モール本
体2の外面(装飾面)からヒケ、ソリなどの諸症状をな
くすことができる。
In the side molding M1 of the present invention, the core metal 1 is provided with a recess 1b for improving strength, and the recess 1b is used as a gas passage in the hollow injection molding method. Since the flow resistance of the molten resin is significantly reduced, long side moldings can be integrally molded seamlessly, and moreover, the outer surface (decorative surface) of the molding body 2 is free from various symptoms such as sink marks and warpage. You can

【0019】次に、本発明の他の実施例を図9を参照し
て説明する。この図において、サイドモールM2の成形
法は前記実施例と重複するので略するが、モール本体1
2の内周面に密着固定された芯金11は、全体がハット
形状に屈曲して形成されて、図示の両端の鍔部より立ち
上がる立上り部11a,11aを有している。その結
果、芯金11は、表面側において凹部11b,11bが
形成される。立上り部11a,11a及び凹部11b,
11bは、芯金11の長手方向に延びている。
Next, another embodiment of the present invention will be described with reference to FIG. In this figure, the molding method of the side molding M2 is omitted because it overlaps with that of the above-mentioned embodiment, but it is omitted.
The cored bar 11, which is closely fixed to the inner peripheral surface of 2, is formed by being bent in a hat shape as a whole, and has rising parts 11a and 11a rising from the flange parts at both ends in the figure. As a result, the cored bar 11 has recesses 11b, 11b formed on the front surface side. The rising portions 11a, 11a and the concave portion 11b,
11b extends in the longitudinal direction of the cored bar 11.

【0020】このサイドモールM2では、凹部11b,
11bの一端から射出された溶融樹脂は、主として凹部
11b,11bに射出され、不活性ガスによって凹部1
1b,11bの間及び凹部11b,11bの端部に達す
る。上記した中空射出成形法によって、モール本体12
の幅方向の両端部の内側にそれぞれ中空厚肉部12a,
12aが形成される。屈曲された芯金11は、サイドモ
ールM2に強度をもたせ、溶融樹脂の流動抵抗を低減さ
せる。不活性ガスの圧力は主として凹部11b,11b
に作用するので、肉厚部12a,12aの外面は金型成
形面に強く押し付けられる。
In this side molding M2, the recesses 11b,
The molten resin injected from one end of 11b is injected mainly into the recesses 11b and 11b, and the recess 1 is formed by the inert gas.
It reaches between 1b and 11b and the end of recessed parts 11b and 11b. By the hollow injection molding method described above, the molding body 12
Inside the both ends in the width direction of the hollow thick portion 12a,
12a is formed. The bent core metal 11 gives the side molding M2 strength and reduces the flow resistance of the molten resin. The pressure of the inert gas is mainly the recesses 11b and 11b.
Therefore, the outer surfaces of the thick portions 12a, 12a are strongly pressed against the die molding surface.

【0021】従って、モール本体12は、その幅方向の
両端部にそれぞれ中空厚肉部12aが形成されている
が、その全体の肉厚はほぼ均一になっているために、モ
ール本体12の幅方向の両端部の外面(装飾面)におい
てもヒケなどは発生せず、美しい外面(装飾面)を有す
る。また、芯金11の立上り部11a,11aの存在に
より、外力に対するサイドモールM2の剛性が高められ
る。なお、このサイドモールM2の取り付けは、その幅
方向の両端部の平面部を利用して前記実施例と同じく、
自動車のドアパネルDに対して両面テープTにより固定
される。
Therefore, the molding body 12 has hollow thick portions 12a formed at both end portions in the width direction, but since the entire thickness thereof is substantially uniform, the width of the molding body 12 is large. Sinks and the like do not occur on the outer surfaces (decorative surfaces) of both ends in the direction, and the outer surfaces (decorative surfaces) are beautiful. Further, the presence of the rising portions 11a and 11a of the cored bar 11 enhances the rigidity of the side molding M2 against external force. Note that the side molding M2 is attached by using the flat surface portions at both ends in the width direction, as in the above-described embodiment.
It is fixed to a door panel D of an automobile with a double-sided tape T.

【0022】[0022]

【発明の効果】本発明によるサイドモールは上記構成で
あるので、次のような優れた効果を有する。 (1) 長手方向に延びる凹部を有する芯金を採用すること
により、横断面の断面係数が大きくなり、サイドモール
の剛性を大幅に向上させることができた。 (2) 芯金の形状は金型を上下開きできるような形状であ
るため、芯金を含めモール本体を型抜きするための複雑
高価なスライド型を使用しなくてよく、金型の製作費が
安価となる。 (3) そして、この凹部を、中空射出成形法における中空
肉厚部として利用することにより、溶融樹脂の流動抵抗
を著しく低減することができる。長尺状のサイドモール
や、肉薄部分のあるサイドモールであっても、従来と比
べて低い射出圧で成形することができる。 (4) また、その中空部の存在によって、モール本体の各
部分の肉厚の大きなばらつきがなくなり、溶融樹脂の冷
却速度がほぼ均一となって、モール本体の外面(装飾
面)における中空厚肉部が設けられている部分にヒケや
ソリなどの発生がなくなり、外観の優美なサイドモール
を提供することができる。
Since the side molding according to the present invention has the above structure, it has the following excellent effects. (1) By adopting a cored bar having a recess extending in the longitudinal direction, the cross-sectional modulus of the cross section was increased, and the rigidity of the side molding could be significantly improved. (2) Since the shape of the core metal is such that the mold can be opened up and down, it is not necessary to use a complicated and expensive slide mold for die-cutting the molding body including the core metal. Will be cheaper. (3) Then, by utilizing this concave portion as a hollow thick portion in the hollow injection molding method, the flow resistance of the molten resin can be significantly reduced. Even a long side molding or a side molding having a thin portion can be molded with a lower injection pressure than in the past. (4) In addition, due to the presence of the hollow portion, there is no large variation in the wall thickness of each portion of the molding body, the cooling rate of the molten resin is almost uniform, and the thick molding wall on the outer surface (decorative surface) of the molding body is hollow. It is possible to provide a side mall with an elegant appearance by eliminating the occurrence of sink marks and warpage in the portion where the part is provided.

【0023】請求項2の発明では、芯金の凹部を溶融樹
脂の流動経路として利用することにより、溶融樹脂の流
動抵抗を減じることができ、サイドモールの外面におけ
るヒケ、ソリなども低減することができる。
According to the second aspect of the present invention, the flow resistance of the molten resin can be reduced by utilizing the recessed portion of the core metal as the flow path of the molten resin, and sink marks and warps on the outer surface of the side molding can be reduced. You can

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係るサイドモールM1を取り付けた自
動車の斜視図である。
FIG. 1 is a perspective view of an automobile to which a side molding M1 according to the present invention is attached.

【図2】本発明のサイドモールM1に使用される芯金1
の横断面図である。
FIG. 2 is a core metal 1 used in the side molding M1 of the present invention.
FIG.

【図3】芯金1を上下の金型3,4に嵌入した状態の断
面図である。
FIG. 3 is a cross-sectional view showing a state where a cored bar 1 is fitted in upper and lower molds 3 and 4.

【図4】芯金1を上下の金型3,4に嵌入して、キャビ
ティーC内に空隙部Eを残して溶融樹脂Pを射出充填し
た状態を示す断面図である。
FIG. 4 is a cross-sectional view showing a state in which a cored bar 1 is fitted in upper and lower molds 3 and 4, and a molten resin P is injected and filled in a cavity C while leaving a cavity E.

【図5】金型3,4のキャビティーCに射出充填された
溶融樹脂Pに不活性ガスを注入して、肉厚の最も大きな
部分に中空部が形成された状態の断面図である。
FIG. 5 is a cross-sectional view showing a state where a hollow portion is formed in a portion having the largest wall thickness by injecting an inert gas into the molten resin P injected and filled in the cavities C of the molds 3 and 4.

【図6】本発明に係るサイドモールM1の斜視図であ
る。
FIG. 6 is a perspective view of a side molding M1 according to the present invention.

【図7】本発明に係るサイドモールM1の型開き完了後
の長手方向断面図である。
FIG. 7 is a longitudinal cross-sectional view after completion of mold opening of the side molding M1 according to the present invention.

【図8】本発明に係るサイドモールM1の取付け状態を
示す断面図である。
FIG. 8 is a cross-sectional view showing a mounted state of the side molding M1 according to the present invention.

【図9】本発明に係るサイドモールM2の取付け状態を
示す断面図である。
FIG. 9 is a cross-sectional view showing a mounted state of the side molding M2 according to the present invention.

【図10】従来のサイドモールm1の斜視図である。FIG. 10 is a perspective view of a conventional side molding m1.

【図11】従来のサイドモールm2の斜視図である。FIG. 11 is a perspective view of a conventional side molding m2.

【符号の説明】[Explanation of symbols]

M1,M2 サイドプロテクターモール(サイドモ
ール) 1, 11 芯金 1b,11b 芯金の凹部 2, 12 モール本体 2a,12a モール本体の中空厚肉部 3,4 金型 5 射出口
M1, M2 Side protector molding (side molding) 1, 11 Core metal 1b, 11b Recess of core metal 2, 12 Mold body 2a, 12a Hollow thick part of mold body 3,4 Mold 5 Injection port

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 表面側において長手方向に延びる凹部を
具えた芯金と、該芯金に密着固定されたモール本体とを
有してなり、前記凹部に密着固定されるモール本体が中
空射出成形法による中空肉厚部として形成されているこ
とを特徴とする、自動車用サイドプロテクターモール。
1. A hollow injection molding method comprising a cored bar having a recess extending in the longitudinal direction on the front surface side, and a molding body closely fixed to the cored bar. A side protector molding for automobiles, characterized in that it is formed as a hollow thick portion by a method.
【請求項2】 表面側において長手方向に延びる凹部を
具えた芯金を金型内に配置し、 前記芯金の凹部の一端に位置する射出口から、前記芯金
表面と前記金型成形面によって形成される前記金型内の
容積よりも少ない溶融樹脂を金型内に射出し、 溶融樹脂の射出時又は溶融樹脂の射出後、前記凹部に充
填された溶融樹脂にガスを注入することを特徴とする、 自動車用サイドプロテクターモールの製造方法。
2. A cored bar having a recess extending in the longitudinal direction on the surface side is arranged in a mold, and the cored bar surface and the mold molding surface are introduced from an injection port located at one end of the recessed part of the cored bar. By injecting a molten resin smaller than the volume in the mold formed by the above, and injecting a gas into the molten resin filled in the recess at the time of injection of the molten resin or after the injection of the molten resin. A featured method for manufacturing automobile side protector moldings.
JP02350594A 1993-01-28 1994-01-26 Automobile molding and manufacturing method thereof Expired - Fee Related JP3226408B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP02350594A JP3226408B2 (en) 1993-01-28 1994-01-26 Automobile molding and manufacturing method thereof

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3427293 1993-01-28
JP5-34272 1993-01-28
JP02350594A JP3226408B2 (en) 1993-01-28 1994-01-26 Automobile molding and manufacturing method thereof

Publications (2)

Publication Number Publication Date
JPH072031A true JPH072031A (en) 1995-01-06
JP3226408B2 JP3226408B2 (en) 2001-11-05

Family

ID=26360872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP02350594A Expired - Fee Related JP3226408B2 (en) 1993-01-28 1994-01-26 Automobile molding and manufacturing method thereof

Country Status (1)

Country Link
JP (1) JP3226408B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019107725A1 (en) * 2017-11-28 2019-06-06 주식회사 정민 Method for manufacturing double cosmetic container

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102529178B (en) * 2011-12-29 2014-01-01 乐美机械(宁波)有限公司 Compression sealing device for bottoms and covers of cylindrical paper cans

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019107725A1 (en) * 2017-11-28 2019-06-06 주식회사 정민 Method for manufacturing double cosmetic container
US11318655B2 (en) 2017-11-28 2022-05-03 Jung Min Co., Ltd. Method for manufacturing dual cosmetic container

Also Published As

Publication number Publication date
JP3226408B2 (en) 2001-11-05

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