JPH0327778Y2 - - Google Patents
Info
- Publication number
- JPH0327778Y2 JPH0327778Y2 JP7245486U JP7245486U JPH0327778Y2 JP H0327778 Y2 JPH0327778 Y2 JP H0327778Y2 JP 7245486 U JP7245486 U JP 7245486U JP 7245486 U JP7245486 U JP 7245486U JP H0327778 Y2 JPH0327778 Y2 JP H0327778Y2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- groove
- packing member
- opening
- foam
- 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
- 238000012856 packing Methods 0.000 claims description 30
- 238000000465 moulding Methods 0.000 claims description 11
- 239000006260 foam Substances 0.000 claims description 9
- 238000005187 foaming Methods 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000010097 foam moulding Methods 0.000 description 7
- 239000011550 stock solution Substances 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はウレタンフオーム等の発泡モールド成
形に使用する成形型に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mold used for foam molding of urethane foam and the like.
車輌や家具等のクツシヨン材としてウレタンフ
オームが広く用いられているが、このクツシヨン
材は一般に発泡モールド成形によつて製造されて
いる。
Urethane foam is widely used as a cushion material for vehicles, furniture, etc., and this cushion material is generally manufactured by foam molding.
この発泡モールド成形に用いる成形型は、開閉
自在に結合された下型および上型からなり、目的
とする成形体の形状に対応した成形室が設けられ
ている。そして、まず下型成形室内にポリウレタ
ン発泡原液を注入した後、上型を閉型して発泡さ
せることによりモールド成形が行なわれる。 The mold used for this foam molding consists of a lower mold and an upper mold that are connected so as to be openable and closable, and is provided with a molding chamber corresponding to the shape of the intended molded product. Then, after first injecting a polyurethane foaming stock solution into the lower molding chamber, molding is performed by closing the upper mold and causing foaming.
上記従来のモールド成形型は上型および下型の
合せ部における密着性が不充分で、型を閉じたと
きに隙間が形成される。このため、金型にポリウ
レタン発泡原液を注入して発泡キユアさせると、
上記隙間から発泡圧に押されてウレタンフオーム
の一部が外にはみ出し、通称「バリ」と呼ばれる
突出部が形成される。
In the above-mentioned conventional molding die, the adhesion between the upper die and the lower die is insufficient, and a gap is formed when the die is closed. For this reason, when the polyurethane foaming stock solution is injected into the mold and the foam is cured,
A portion of the urethane foam protrudes from the gap due to the foaming pressure, forming a protrusion commonly called a "burr."
このバリ部分は不要であるから、成形品の仕上
げ工程において鋏等で切取る作業しているのが実
状であり、そのために多大の労力を必要とする問
題があつた。 Since this burr part is unnecessary, it is actually necessary to cut it off with scissors or the like in the finishing process of the molded product, which poses the problem of requiring a great deal of labor.
また、成形型の合せ面に弾性材料からなるパツ
キンを設けてシール性を向上する手段が種々採用
されているが、何れも充分なものとは言い難い。 In addition, various means have been adopted to improve sealing performance by providing packing made of elastic material on the mating surfaces of the molds, but none of them can be said to be sufficient.
そこで、本考案は優れたシール性を具備させる
ことにより、バリの形成を防止できる発泡モール
ド用成形型を提供しようとするものである。 Therefore, the present invention aims to provide a mold for foam molding that can prevent the formation of burrs by providing excellent sealing properties.
本考案による発泡モールド用成形型は、開閉自
在に連結された下型および上型と、これら下型お
よび上型の内面で限定される空間であつて目的と
する成形物の形状に対応した成形室と、前記下型
および上型の合せ面の少なくとも一方に設けられ
た開口部が内部よりも狭い凹溝と、該凹溝内に嵌
入して配設されたゴム状弾性材料からなるパツキ
ン部材とを具備し、このパツキン部材の前記凹溝
外に露出している部分を前記凹溝開口部よりも広
い板状とし、且つ前記凹溝開口部上に位置する凸
部を設けたことを特徴とするものである。
The mold for foam molding according to the present invention consists of a lower mold and an upper mold that are connected to each other so as to be openable and closable, and a space defined by the inner surfaces of the lower mold and the upper mold that can be used to mold the desired molded product. a chamber, a concave groove provided in at least one of the mating surfaces of the lower die and the upper die, the opening of which is narrower than the inside, and a packing member made of a rubber-like elastic material and disposed to fit into the groove. A portion of the packing member exposed outside the groove is shaped like a plate wider than the opening of the groove, and a convex portion is provided above the opening of the groove. That is.
本考案におけるパツキン部材を構成するゴム状
弾性材料としては、天然ゴムの外、アクリロニト
リル、ブタジエンゴム（NBR）、スチレン・ブタ
ジエンゴム（SBR）、クロロプレンゴム（CR）、
シリコーンゴム等の合成ゴム、更にはウレタンエ
ラストマー等を用いることができる。 In addition to natural rubber, the rubber-like elastic materials constituting the packing member in the present invention include acrylonitrile, butadiene rubber (NBR), styrene-butadiene rubber (SBR), chloroprene rubber (CR),
Synthetic rubber such as silicone rubber, urethane elastomer, etc. can be used.
なお、前記凹溝の断面はその中に嵌入されるパ
ツキン部材の下部よりもやや小さくする方がよ
い。 Note that it is preferable that the cross section of the groove be slightly smaller than the lower part of the packing member fitted therein.
また、パツキン部材の前記凹部内に嵌入されて
いる部分には、内部に中空部を設けてもよい。 Further, a hollow portion may be provided inside the portion of the packing member that is fitted into the recess.
本考案の成形型では、パツキン部材の露出部分
が板状部と凸部とからなるため、閉型に際しては
その凸部が確実に押圧変形され、これに板状部の
変形も加わるため二段のシール効果が得られる。
しかも、前記凸部は合せ面の凹溝開口部上に位置
して設けられているから、その押圧による変形は
凹溝内に嵌入されているパツキン部材部分にも及
び、従つて変形し易い。このため、前記凸部によ
るシール作用が更に向上する。この場合、前記パ
ツキン部材の凹溝内に嵌入されている部分に中空
部を設ければ、前記凸部の変形性を更に向上する
ことができる。
In the mold of the present invention, the exposed part of the packing member consists of a plate-like part and a convex part, so when the mold is closed, the convex part is reliably pressed and deformed, and since the plate-like part is also deformed, there are two steps. A sealing effect can be obtained.
Furthermore, since the convex portion is located above the groove opening of the mating surface, the deformation caused by the pressure extends to the portion of the packing member fitted into the groove, and is therefore easily deformed. Therefore, the sealing effect of the convex portion is further improved. In this case, if a hollow portion is provided in the portion of the packing member that is fitted into the groove, the deformability of the convex portion can be further improved.
また、前記凹溝は開口部が内部よりも狭いか
ら、この中に嵌入されているパツキン部材が外れ
難くなつており、剥離を防止する作用がある。 Furthermore, since the opening of the groove is narrower than the inside thereof, the packing member fitted therein is difficult to come off, and has the effect of preventing peeling.
第１図は本考案の一実施例になる発泡モールド
成形型を示す斜視図であり、第２図はその−
線に沿う断面図である。これらの図において、１
は下型、２は上型である。両者共にアルミニウム
製で、これらは蝶番３を介して開閉自在に連結さ
れている。また、下型１には上方に開口した成形
室空間４が形成され、上型２は蓋体となる。下型
１の合せ面には、成形室４の開口部を取囲んで、
第２図に示すように断面が略円形の凹溝１１が形
成されている。該凹溝１１の開口部は内部よりも
狭くなつている。そして、この凹部１１内には、
ゴム製のパツキン部材５が嵌入固定されている。
該パツキン部材５の下部は凹溝１１と同様の円形
断面を有しており、該円形断面を有する下部５１
が凹溝内に嵌入されている。パツキン部材５の凹
溝１１外に露出している部分は、所定厚さの板状
部５２と、該板状部の略中央に形成された凸部５
３とからなつている。板状部５２の幅は前記凹溝
１１の開口部よりも広く、また前記凸部５３は前
記凹溝１１の開口部上に位置している。
FIG. 1 is a perspective view showing a foam mold forming die according to an embodiment of the present invention, and FIG.
It is a sectional view along a line. In these figures, 1
is the lower mold, and 2 is the upper mold. Both are made of aluminum and are connected via a hinge 3 so that they can be opened and closed. Further, a molding chamber space 4 that is open upward is formed in the lower mold 1, and the upper mold 2 serves as a lid. On the mating surface of the lower mold 1, surrounding the opening of the molding chamber 4,
As shown in FIG. 2, a groove 11 having a substantially circular cross section is formed. The opening of the groove 11 is narrower than the inside. In this recess 11,
A rubber packing member 5 is fitted and fixed.
The lower part of the packing member 5 has a circular cross section similar to the groove 11, and the lower part 51 having the circular cross section
is fitted into the groove. The part of the packing member 5 exposed outside the concave groove 11 includes a plate-like part 52 having a predetermined thickness and a convex part 5 formed approximately in the center of the plate-like part.
It consists of 3. The width of the plate-shaped portion 52 is wider than the opening of the groove 11, and the convex portion 53 is located above the opening of the groove 11.
上記実施例の発泡モールド用成形型を用い、例
えばポリウレタンフオームのモールド成形を行な
う場合には、第１図の状態で成形室４内にポリウ
レタン発泡原液を注入した後、上型２を閉型して
発泡させればよい。 When molding polyurethane foam, for example, using the foaming mold of the above embodiment, after injecting the polyurethane foam stock solution into the molding chamber 4 in the state shown in FIG. 1, the upper mold 2 is closed. All you have to do is foam it.
その際、上型２と下型１の合せ面にはパツキン
部材５が挟着され、該パツキン部材が押圧変形さ
れて隙間を埋める。このパツキン部材５のシール
作用により成形室内部が密封され、発泡原液の外
部へはみ出しによる「バリ」形成が防止される。
パツキン部材５の上記シール作用には、板状部５
２の変形によるもの以外に、凸部２３の変形によ
るシール作用が加わるため極めて効果的である。 At this time, a packing member 5 is sandwiched between the mating surfaces of the upper die 2 and the lower die 1, and the packing member is pressed and deformed to fill the gap. The sealing action of the packing member 5 seals the inside of the molding chamber and prevents the formation of "burrs" due to the foaming stock solution spilling out.
The above-mentioned sealing action of the packing member 5 requires the plate-shaped portion 5
In addition to the deformation of the convex portion 23, the deformation of the convex portion 23 provides a sealing effect, which is extremely effective.
しかも、凸部５３は板状部５２の平面から突出
しているため、確実に上型２による圧縮変形を受
ける。且つ、凸部５２が凹溝１１の開口部上に位
置しているから、その変形は凹溝内に嵌入されて
いる下部５１にも及び、その分だけ凸部５３は更
に変形し易くなつている。従つて、上記実施例の
モールド型はシール性が著しく優れており、「バ
リ」発生を防止する上で顕著な効果を奏する。 Furthermore, since the convex portion 53 protrudes from the plane of the plate-like portion 52, it is reliably compressed and deformed by the upper die 2. In addition, since the convex portion 52 is located above the opening of the concave groove 11, the deformation also extends to the lower part 51 fitted into the concave groove, and the convex portion 53 becomes more easily deformed. There is. Therefore, the molds of the above embodiments have extremely excellent sealing properties and are extremely effective in preventing the occurrence of "burrs".
また、凹溝１１の開口部が内部よりも狭く、パ
ツキン部材の下部５１はその中を完全に埋設され
た形になつているから、パツキン部材５の剥離を
防止できる効果が得られる。 Moreover, since the opening of the groove 11 is narrower than the inside, and the lower part 51 of the packing member is completely buried therein, the effect of preventing the packing member 5 from peeling off can be obtained.
第３図は、上記実施例におけるパツキン部材の
変形例を示す断面図である。このパツキン部材
５′は、凹溝１１の内部に嵌入される部分５１の
中に中空部５４が形成されており、それ以外は上
記実施例におけるパツキン部材５と同じである。
このように中空部５４を設けることにより、前記
凸部５３の圧縮変形を更に容易にし、シール性を
向上することができる。 FIG. 3 is a sectional view showing a modification of the packing member in the above embodiment. This packing member 5' has a hollow portion 54 formed in a portion 51 that is fitted into the groove 11, and is otherwise the same as the packing member 5 in the above embodiment.
By providing the hollow portion 54 in this way, the compression deformation of the convex portion 53 can be further facilitated, and the sealing performance can be improved.
また、上記実施例における凹溝１１の断面形状
は、略円形に限ることなく台形であつてもよい。
その場合には、第４図に示すように断面形状が略
台形のパツキン部材６を用いる。 Further, the cross-sectional shape of the groove 11 in the above embodiment is not limited to a substantially circular shape, but may be a trapezoidal shape.
In that case, a packing member 6 having a substantially trapezoidal cross-sectional shape is used as shown in FIG.
以上詳述したように、本考案による発泡モール
ド用成形型は優れたシール性を有するため、発泡
成形時における「バリ」の発生を防止でき、その
後の「バリ」除去工程を省略して生産性を向上で
きる等、顕著な効果が得られるものである。
As detailed above, the mold for foam molding according to the present invention has excellent sealing properties, so it can prevent the generation of "burrs" during foam molding, and improve productivity by omitting the subsequent "burr" removal process. It is possible to obtain remarkable effects such as being able to improve
第１図は本考案の一実施例になる発泡モールド
成形型を示す斜視図であり、第２図は第１図−
線に沿う断面図、第３図および第４図は本考案
の他の実施例におけるパツキン部材を示す断面図
である。
１……下型、２……上型、３……蝶番、４……
成形室、５，５′，６……パツキン部材。
FIG. 1 is a perspective view showing a foam mold forming die according to an embodiment of the present invention, and FIG.
3 and 4 are cross-sectional views taken along the line, showing packing members in other embodiments of the present invention. 1...Lower mold, 2...Upper mold, 3...Hinge, 4...
Molding chamber, 5, 5', 6... Packing member.
Claims (1)
れらの下型および上型の内面で限定される空間
であつて目的とする成形物の形状に対応した成
形室と、前記下型および上型の合せ面の少なく
とも一方に設けられた開口部が内部よりも狭い
凹溝と、該凹溝内に嵌入して配設されたゴム状
弾性材料からなるパツキン部材とを具備し、こ
のパツキン部材の前記凹溝外に露出している部
分を前記凹溝開口部よりも広い板状とし、且つ
前記凹溝開口部上に位置す凸部を設けたことを
特徴とする発泡モールド用成形型。 (2) 前記凹溝および該凹溝内に嵌入されている前
記パツキン部材部分が、略円形断面を有するこ
とを特徴とする実用新案登録請求の範囲第(1)項
記載の発泡モールド用成形型。 (3) 前記凹溝および該凹溝内に嵌入されている前
記パツキン部材部分が、台形断面を有すること
を特徴とする実用新案登録請求の範囲第(1)項記
載の発泡モールド用成形型。 (4) 前記パツキン部材の凹溝内に嵌入されている
部分の内部に、中空部を設けたことを特徴とす
る実用新案登録請求の範囲第(1)項、第(2)項また
は第(3)項記載の発泡モールド用成形型。[Claims for Utility Model Registration] (1) A lower mold and an upper mold connected to each other so as to be openable and closable, and a space defined by the inner surfaces of the lower mold and the upper mold that corresponds to the shape of the intended molded product. a molding chamber, a concave groove provided in at least one of the mating surfaces of the lower mold and the upper mold, the opening of which is narrower than the inside, and a rubber-like elastic material disposed to fit into the concave groove. a packing member, the part of the packing member exposed outside the groove is shaped like a plate wider than the opening of the groove, and a convex portion is provided above the opening of the groove. A mold for foam molds featuring: (2) The mold for a foaming mold according to claim 1, wherein the groove and the packing member portion fitted into the groove have a substantially circular cross section. . (3) The mold for a foaming mold according to claim 1, wherein the groove and the packing member portion fitted into the groove have a trapezoidal cross section. (4) Claims (1), (2), or (2) of the claims for utility model registration, characterized in that a hollow portion is provided inside the portion of the packing member that is fitted into the concave groove. The mold for the foam mold described in section 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7245486U JPH0327778Y2 (en) | 1986-05-14 | 1986-05-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7245486U JPH0327778Y2 (en) | 1986-05-14 | 1986-05-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62185015U JPS62185015U (en) | 1987-11-25 |
| JPH0327778Y2 true JPH0327778Y2 (en) | 1991-06-17 |
Family
ID=30915912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7245486U Expired JPH0327778Y2 (en) | 1986-05-14 | 1986-05-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0327778Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3555331B2 (en) * | 1996-05-30 | 2004-08-18 | 日本ゼオン株式会社 | Manufacturing method and mold device for reaction injection molded article having opening |
| DE102013215113A1 (en) * | 2013-08-01 | 2015-02-05 | Bayerische Motoren Werke Aktiengesellschaft | Tool for the production of fiber-reinforced plastic components in the injection process |
-
1986
- 1986-05-14 JP JP7245486U patent/JPH0327778Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62185015U (en) | 1987-11-25 |
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