JPH0375007B2 - - Google Patents
Info
- Publication number
- JPH0375007B2 JPH0375007B2 JP17741086A JP17741086A JPH0375007B2 JP H0375007 B2 JPH0375007 B2 JP H0375007B2 JP 17741086 A JP17741086 A JP 17741086A JP 17741086 A JP17741086 A JP 17741086A JP H0375007 B2 JPH0375007 B2 JP H0375007B2
- Authority
- JP
- Japan
- Prior art keywords
- glass run
- notch
- thermoplastic resin
- side walls
- corner portion
- 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.)
- Expired
Links
- 239000011521 glass Substances 0.000 claims description 30
- 229920005992 thermoplastic resin Polymers 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ゴム製グラスランのコーナー部成形
方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for forming the corner portion of a rubber glass run.
従来の技術
従来グラスランの成形方法としては、第4,5
図に示したものが提案されている(特開昭59−
67035号公報参照)。すなわちグラスラン1は、第
4図に明示したように両側壁2,2と、該両側壁
2,2間に延在するベース壁3とを有し、前記側
壁2,2の先端部には、図示しないドアガラスの
両側面に密接するリツプ4,4が設けられてい
る。そして前記グラスラン1にコーナー部を形成
するに際しては、まず同図に示したように両側壁
2,2とベース壁3に及ぶ切片5を切除して切欠
部6を成形する。次に第5図に明示したようにコ
ーナー部に応じた屈曲形状であつて溝7を有する
下型8及び前記溝7に嵌合する突条9と両側突縁
10,10とを有する中子型11を用い、第6図
Aに示したように中子型11の突縁10,10に
グラスラン1の両側壁2,2切除後に残余してい
る切り残し部12,12を係合させる。しかる後
にこの中子型11を前記突条9を溝7に嵌合させ
て下型8に組み付け、図示しない上型を覆設した
後、前記切欠部6に熱可塑性樹脂を注入し冷却硬
化させる。これによつて第7図に示したようにコ
ーナー部13が熱可塑性樹脂14で成形されたグ
ラスラン1が成形されるのである。Conventional technology Conventional glass run forming methods include the 4th and 5th methods.
The one shown in the figure has been proposed (Unexamined Japanese Patent Publication No. 59-
(See Publication No. 67035). That is, the glass run 1 has both side walls 2, 2 and a base wall 3 extending between the both side walls 2, 2, as clearly shown in FIG. Lips 4, 4 are provided in close contact with both sides of the door glass (not shown). When forming a corner portion in the glass run 1, first, as shown in the figure, the cutout portion 6 is formed by cutting out the cutout portion 5 extending over the both side walls 2, 2 and the base wall 3. Next, as clearly shown in FIG. 5, a lower die 8 having a bent shape corresponding to the corner portion and having a groove 7, a core having a protrusion 9 that fits into the groove 7, and protrusions 10, 10 on both sides. Using the mold 11, as shown in FIG. 6A, the uncut portions 12, 12 remaining after cutting off both side walls 2, 2 of the glass run 1 are engaged with the projecting edges 10, 10 of the core mold 11. Thereafter, this core mold 11 is assembled to the lower mold 8 by fitting the protrusions 9 into the grooves 7, and after covering the upper mold (not shown), a thermoplastic resin is injected into the notch 6 and hardened by cooling. . As a result, the glass run 1 whose corner portions 13 are made of thermoplastic resin 14 is formed as shown in FIG.
発明が解決しようとする問題点
しかしながらこのような従来のグラスラン成形
方法においては、第4図に示したように、ベース
壁3とともに両側壁2,2を長尺方向に沿つて直
線状に切欠するとともに、該両側壁2,2はコー
ナー部13成形時の追従性を向上させるべく幅方
向においてより広範囲に切除する必要があること
から、前記切り残し部12は必然的に幅方向にお
いて短小な形状となる。このため前述のように熱
可塑性樹脂14注入時には、中子型11の突縁1
0,10に、切り残し部12,12を係合させる
(第6図A参照)必要があるにもかかわらず、第
6図Bに示したように突縁10,10より切り残
し部12,12が容易に脱落してしまい、コーナ
ー部13成形時に、切り残し部12,12と熱可
塑性樹脂14の接合面間に接合不良が生ずるおそ
れがあつた。Problems to be Solved by the Invention However, in such a conventional glass run forming method, as shown in FIG. At the same time, since it is necessary to cut out a wider range of both side walls 2, 2 in the width direction in order to improve followability when forming the corner portion 13, the uncut portion 12 is necessarily short and small in the width direction. becomes. Therefore, as mentioned above, when injecting the thermoplastic resin 14, the projecting edge 1 of the core mold 11
Although it is necessary to engage the uncut portions 12, 12 with the ridges 10, 10 (see FIG. 6A), as shown in FIG. 6B, the uncut portions 12, 12 easily fell off, and there was a risk that a bonding failure would occur between the uncut portions 12, 12 and the bonding surfaces of the thermoplastic resin 14 when the corner portion 13 was molded.
本発明はこのような従来の実情に鑑みてなされ
たものであり、前記問題点を解決するとともに、
熱可塑性樹脂14の接合強度をも向上させること
を可能にしたグラスランのコーナー部成形方法を
提供するものである。 The present invention has been made in view of such conventional circumstances, and solves the above-mentioned problems, as well as
The present invention provides a method for forming a corner portion of a glass run, which also makes it possible to improve the bonding strength of the thermoplastic resin 14.
問題点を解決するための手段
前記問題点を解決するために本発明にあつて
は、長尺状のゴム製グラスランを押し出し成形
し、単グラスランを屈曲してコーナー部を形成す
るとともに、該コーナー部の外周に切欠部を設
け、該切欠部に熱可塑性樹脂を充填するグラスラ
ンの成形方法において、前記切欠部の切断面を波
状に成形し、該切欠部の相対向する側壁に、複数
の長尺片を設けるようにしてある。Means for Solving the Problems In order to solve the above problems, in the present invention, a long rubber glass run is extruded, a single glass run is bent to form a corner portion, and the corner portion is In a glass run molding method in which a cutout is provided on the outer periphery of the cutout and the cutout is filled with thermoplastic resin, the cut surface of the cutout is formed into a wavy shape, and a plurality of long lengths are formed on the opposing side walls of the cutout. A shaku piece is provided.
作 用
前記構成において、前記切欠部の相対向する側
壁には、複数の長尺片が設けられていることか
ら、該長尺片が金型の所定部位に係合することに
よつてグラスランは正規位置にセツトされ、充填
された熱可塑性樹脂と誤差なく接合する。しかも
前記長尺片は間欠的に成形されていることから、
屈曲時におけるコーナー部形状に容易に追従する
とともに、切欠部の切断面が波状であることから
熱可塑性樹脂との接合面積が増加し、接合強度も
向上するのである。特に脱落しやすい断面の場合
は、コーナーの頂点に長尺片が位置する様に切欠
くと良い。Effect In the above configuration, since a plurality of elongated pieces are provided on the opposing side walls of the notch, the glass run is caused by the elongated pieces engaging with a predetermined portion of the mold. It is set in the correct position and joins with the filled thermoplastic resin without error. Moreover, since the long piece is formed intermittently,
It easily follows the shape of the corner when bent, and since the cut surface of the notch is wavy, the bonding area with the thermoplastic resin increases, and the bonding strength also improves. If the cross section is particularly likely to fall off, it is best to cut out the long piece so that it is located at the apex of the corner.
実施例
以下本発明の一実施例について図面に従つて説
明する。すなわち第1図に示したようにグラスラ
ン1はゴム製であつて両側壁2,2と該両側壁
2,2間に延在するベース壁3とを有し、前記側
壁2,2の先端部には、リツプ4,4が設けられ
た形状であつて、押し出し成形により長尺状に成
形される。そしてこのグラスラン1にコーナー部
を成形するに際しては、まず同図に示したように
両側壁2,2とベース壁3に及ぶ切片5を切除し
て切欠部6を成形する。このとき、両側壁2,2
の長尺方向における切断面を波状に成形すると、
これによつて相対向する側壁2,2には、複数の
長尺片15…が間欠的に成形される。次に第2図
Aに示した如く、前記切欠部6においてグラスラ
ン1を屈曲すると、前記長尺片15…は間欠的に
成形されていることから、屈曲時の妨げとなるよ
うなことはなく、切欠部6は支障なくコーナー部
13の形状に追従して撓み変形する。そしてこの
グラスラン1を前記中子型11にセツトすると、
第3図に示したように、長尺片15が中子型11
の突縁10に密接係合し、中子型11との適正な
嵌合状態が得られる。したがつてこの中子型11
を第5図に示した下型8に組み付けた後図外の上
型を覆設して熱可塑性樹脂14の注入を行なう
と、該熱可塑性樹脂14は、適正に切欠部6内に
充填され、接合誤差なく切欠部6周縁と接合す
る。しかも両側壁2,2の長尺方向における切断
面が波形であることから、該切断面と熱可塑性樹
脂14との接合面積が増大し、接合強度の向上を
図ることができるのである。また、第2図Bに示
すように長尺片15のうちコーナー部の頂部に対
応する長尺片15′を長くすることにより、接合
強度をさらに向上させることができる。Embodiment An embodiment of the present invention will be described below with reference to the drawings. That is, as shown in FIG. 1, the glass run 1 is made of rubber and has both side walls 2, 2 and a base wall 3 extending between the side walls 2, 2. The shape is provided with lips 4, 4, and is formed into a long shape by extrusion molding. When forming a corner portion on this glass run 1, first, as shown in the same figure, a cutout portion 6 is formed by cutting out a piece 5 extending over both side walls 2, 2 and base wall 3. At this time, both side walls 2, 2
When the cut surface in the longitudinal direction of is formed into a wavy shape,
As a result, a plurality of long pieces 15 are intermittently formed on the opposing side walls 2, 2. Next, as shown in FIG. 2A, when the glass run 1 is bent at the notch 6, since the long pieces 15 are formed intermittently, they do not interfere with the bending. , the cutout portion 6 bends and deforms following the shape of the corner portion 13 without any problem. Then, when this glass run 1 is set in the core mold 11,
As shown in FIG. 3, the long piece 15 is connected to the core mold 11
It closely engages with the projecting edge 10 of the core mold 11, and a proper fitted state with the core mold 11 can be obtained. Therefore, this core mold 11
After assembling into the lower mold 8 shown in FIG. 5, the upper mold (not shown) is covered and the thermoplastic resin 14 is injected, so that the thermoplastic resin 14 is properly filled into the notch 6. , is joined to the periphery of the notch 6 without any joining error. Moreover, since the cut surfaces in the longitudinal direction of both side walls 2, 2 are wave-shaped, the bonding area between the cut surfaces and the thermoplastic resin 14 increases, and the bonding strength can be improved. Further, as shown in FIG. 2B, by lengthening the long piece 15' of the long piece 15 corresponding to the top of the corner portion, the bonding strength can be further improved.
発明の効果
以上説明したように本発明は、グラスランのコ
ーナー部に成形される切欠部の切断面を波状に成
形し、該切欠部の相対向する側壁に、複数の長尺
片を間欠的に成形するようにした。よつて切欠部
に熱可塑性樹脂を充填する際、前記長尺片を金型
の所定部位置に密接係合することによつて、グラ
スランコーナー部の金型からの脱落を防止するこ
とができる。よつて熱可塑性樹脂は、誤差なく切
欠部内に充填され、適正に切欠部に熱可塑性樹脂
が接合された製品を得ること可能となる。しかも
前記長尺片は間欠的に成形されていることから、
コーナー部成形時の屈曲に支障なく追従し得ると
ともに、波形の切断面と熱可塑性樹脂の接合面積
の増加に伴つて、接合強度の向上を図ることをも
可能にするものである。Effects of the Invention As explained above, the present invention forms the cut surface of the notch formed in the corner part of the glass run in a wavy shape, and intermittently forms a plurality of long pieces on the opposing side walls of the notch. I decided to mold it. Therefore, when filling the notch with thermoplastic resin, by tightly engaging the elongated piece with a predetermined position of the mold, it is possible to prevent the glass run corner portion from falling off from the mold. Therefore, the thermoplastic resin is filled into the notch without error, and it is possible to obtain a product in which the thermoplastic resin is appropriately joined to the notch. Moreover, since the long piece is formed intermittently,
It is possible to follow the bending during corner molding without any trouble, and it also makes it possible to improve the bonding strength as the bonding area between the corrugated cut surface and the thermoplastic resin increases.
第1図は本発明の一実施例に係るグラスランの
斜視説明図、第2図A,Bは同グラスランを屈曲
した状態を示す斜視図、第3図は同グラスランの
第5図−線に相当する断面図、第4図は従来
の成形方法におけるグラスランの切欠部成形状態
を示す斜視図、第5図は従来のグラスランのコー
ナー部成形時の状態を示す分解斜視図、第6図
A,Bは第5図−線に相当するグラスランと
中子型の係合状態を示す断面図、第7図はコーナ
ー部成形後のグラスランを示す斜視図である。
1……グラスラン、2……側壁、3……ベース
壁、4……リツプ、6……切欠部、15……長尺
片。
FIG. 1 is a perspective explanatory diagram of a glass run according to an embodiment of the present invention, FIGS. 2A and B are perspective views showing the same glass run in a bent state, and FIG. 3 corresponds to the line shown in FIG. 5 of the same glass run. FIG. 4 is a perspective view showing the state of forming the notch part of the glass run in the conventional forming method, FIG. 5 is an exploded perspective view showing the state of the corner part of the conventional glass run when forming the corner part, and FIGS. 7 is a cross-sectional view corresponding to the line in FIG. 5, showing the engaged state of the glass run and the core mold, and FIG. 7 is a perspective view showing the glass run after corner portion molding. 1... Grass run, 2... Side wall, 3... Base wall, 4... Lip, 6... Notch, 15... Long piece.
Claims (1)
し、該グラスランを屈曲してコーナー部を形成す
るとともに、該コーナー部の外周に切欠部を設
け、該切欠部に熱可塑性樹脂を充填するグラスラ
ンの成形方法において、前記切欠部の切断面を波
状に成形し、該切欠部の相対向する側壁に、複数
の長尺片を間欠的に成形したことを特徴とするグ
ラスランのコーナー部成形方法。1 Molding of a glass run by extrusion molding a long rubber glass run, bending the glass run to form a corner part, providing a notch on the outer periphery of the corner part, and filling the notch with thermoplastic resin. A method for forming a corner portion of a glass run, characterized in that the cut surface of the notch is formed into a wavy shape, and a plurality of elongated pieces are intermittently formed on opposing side walls of the notch.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17741086A JPS6334107A (en) | 1986-07-28 | 1986-07-28 | Method for molding corner part of glass randing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17741086A JPS6334107A (en) | 1986-07-28 | 1986-07-28 | Method for molding corner part of glass randing |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6334107A JPS6334107A (en) | 1988-02-13 |
JPH0375007B2 true JPH0375007B2 (en) | 1991-11-28 |
Family
ID=16030438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17741086A Granted JPS6334107A (en) | 1986-07-28 | 1986-07-28 | Method for molding corner part of glass randing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6334107A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0544120Y2 (en) * | 1988-04-18 | 1993-11-09 | ||
GB9720163D0 (en) * | 1997-09-24 | 1997-11-26 | Investments S D Ltd | Gasket for cladding system |
-
1986
- 1986-07-28 JP JP17741086A patent/JPS6334107A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6334107A (en) | 1988-02-13 |
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