JPS633793Y2 - - Google Patents
Info
- Publication number
- JPS633793Y2 JPS633793Y2 JP5813482U JP5813482U JPS633793Y2 JP S633793 Y2 JPS633793 Y2 JP S633793Y2 JP 5813482 U JP5813482 U JP 5813482U JP 5813482 U JP5813482 U JP 5813482U JP S633793 Y2 JPS633793 Y2 JP S633793Y2
- Authority
- JP
- Japan
- Prior art keywords
- pin
- shaft
- mold
- extrusion
- mold release
- 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
- 238000001125 extrusion Methods 0.000 claims description 16
- 238000000465 moulding Methods 0.000 claims description 7
- 230000004927 fusion Effects 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 230000001788 irregular Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920006248 expandable polystyrene Polymers 0.000 description 2
- 229920006328 Styrofoam Polymers 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000008261 styrofoam 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】
本案は、回転する離型用押出し装置に関するも
のである。[Detailed Description of the Invention] The present invention relates to a rotating extrusion device for mold release.
従来発泡スチロールを金型内で成型する場合
は、予め原料ビーズを予備発泡し、この予備発泡
を金型に注入したのち、スチームで加熱して本発
泡を行ない、冷却、離型という順序で発泡スチロ
ール製品を成型するが、最後の工程である離型の
際に生じるトラブルの大半は、
(1) 押出しピンのない側の金型に製品が残る。 Conventionally, when molding expanded polystyrene in a mold, the raw material beads are pre-foamed in advance, the pre-foamed foam is injected into the mold, the foam is heated with steam to perform the main foaming, the steps are followed by cooling and releasing the mold to form the foamed polystyrene product. Most of the troubles that occur during mold release, which is the final step, are: (1) The product remains in the mold on the side without the ejector pin.
(2) 押出しピンのピン先から製品の離れが悪い。(2) The product is not easily separated from the tip of the ejector pin.
の二点に集約される。 It can be summarized in two points.
上述の発泡スチロール融着成形は、現在その殆
どは全自動方式で行なわれているのであるが、上
述のごとく離型不良によつて円満に製品が落下し
ないことがあるために、完全には無人化されず
２，３台に１人の割合で要員を配置しているのが
現状である。 Most of the above-mentioned foamed polystyrene fusion molding is currently carried out using a fully automatic method, but as mentioned above, the product may not fall smoothly due to poor mold release, so it is not possible to completely unmanned the process. The current situation is that one person is assigned to every two or three vehicles.
上記(1)の問題は、金型自体の設計ミスによるも
ので、これは金型内面のテーパーを調整すること
によつて、防止することができる。 The above problem (1) is due to a design error in the mold itself, and this can be prevented by adjusting the taper of the inner surface of the mold.
上記(2)の問題は、押出しピンのピン先からの製
品の離れは、毎回微妙に変化するので、この調節
は非常に難しい。 Problem (2) above is that the distance of the product from the tip of the ejector pin changes slightly every time, so this adjustment is very difficult.
通常、この押出しピンのピン先には直径30mm又
は50mmの円盤状の金具が取付けてあり、特に肉厚
の薄い製品を成型する場合には、製品の破損を防
ぐためにも直径50mmのピン先を用いているが、発
泡スチロール製品は比重0.015〜0.02という軽量
物であるから、このピン先に製品が融着、又は密
着して、折角金型から離脱した製品が前述の如く
円満に落下しないで、そのまま、再び金型内に逆
戻りしたり、或は不規則離脱が原因で製品が傾斜
落下し、左右金型の間に引つ掛かつてしまうとい
うトラブルが発生する。勿論、成型機はそんな場
合でも円満落下したものとし、タイマーによつて
次の型締め行程に移るので、そのままにしておけ
ば大変なことになる。従つてこれをチエツクする
要員を配置しておかなければならない。 Usually, a disk-shaped metal fitting with a diameter of 30 mm or 50 mm is attached to the pin tip of this extrusion pin, and when molding a particularly thin product, a pin tip with a diameter of 50 mm is attached to prevent damage to the product. However, since styrofoam products are lightweight with a specific gravity of 0.015 to 0.02, the product fuses or adheres to the tips of these pins, and the products released from the mold do not fall smoothly as described above. Problems occur in that the product returns to the mold again, or due to irregular detachment, the product falls at an angle and gets caught between the left and right molds. Of course, even in such a case, the molding machine will be assumed to have fallen smoothly and the timer will move on to the next mold clamping process, so if you leave it as it is, you will be in trouble. Therefore, personnel must be assigned to check this.
本考案は、上記の問題を解決しようとするもの
で、以下その詳細を説明する。 The present invention aims to solve the above problems, and the details thereof will be explained below.
１は本案の回転する離型用押出し装置である。
そして、その構成は
押出しピン２が進退するよう構成された多泡体
樹脂を融着成型する金型３において、上記押出し
ピン２は軸２Ａとピン先２Ｂとからなり、上記軸
２Ａは、外周面に当該軸の長手方向をもつて若干
ねじれのある凹溝２Ｃを刻設すると共に、上記金
型３に設けられた押出しピンの軸受リング３Ａの
内面に上記凹溝２Ｃに対応する凸部３Ｂが突設さ
れている。 1 is a rotating mold release extrusion device of the present invention.
The configuration is as follows: In a mold 3 for fusion molding a multifoam resin, the extrusion pin 2 is configured to move forward and backward, the extrusion pin 2 consists of a shaft 2A and a pin tip 2B, and the shaft 2A has an outer periphery. A concave groove 2C with a slight twist in the longitudinal direction of the shaft is carved on the surface, and a convex portion 3B corresponding to the concave groove 2C is formed on the inner surface of the bearing ring 3A of the extrusion pin provided in the mold 3. is installed protrudingly.
そして、第１図を参照して上記金型３の前面に
押出しピンのない金型４が配設され、この金型３
の背面には固定板５が配設されている。 Referring to FIG.
A fixing plate 5 is provided on the back side of the holder.
又、上記凹溝２Ｃ、凸部３Ｂにかえて、下記の
ように構成することができる。 Further, instead of the groove 2C and the convex portion 3B, the following structure can be used.
すなわち、上記軸２Ａには、外周面に当該軸の
長手方向をもつて若干ねじれのある凸条を突設す
ると共に上記軸受リング３Ａの内面には、上記凸
条に対応する凹部が突設することができる。（図
示略）
このほか、上記ピン先２Ｂの外方面には適数本
の不規側な深さ0.02mm程度の溝２Ｂ１を刻設する
ことができる。（第４図参照）
押出しピンのある移動金型部７が後退し、押出
しピン２の軸２Ａが固定板５にあたつてピン先２
Ｂが製品６を押出す時、押出しピンの軸２Ａに設
けてある凹溝２Ｃと軸受リング３Ａに設けてある
凸部３Ｂとによつてピン軸２Ａが大凡２分の１回
転し、これに伴いピン先２Ｂも大凡２分の１回転
することになる。 That is, the shaft 2A has a protruding protrusion extending in the longitudinal direction of the shaft with a slight twist on its outer peripheral surface, and a recess corresponding to the protruding protrusion is provided on the inner surface of the bearing ring 3A. be able to. (Not shown) In addition, an appropriate number of irregular grooves 2B1 having a depth of about 0.02 mm can be carved on the outer surface of the pin tip 2B. (See Fig. 4) The movable mold part 7 with the ejector pin moves back, and the shaft 2A of the ejector pin 2 hits the fixed plate 5 and the pin tip 2
When B extrudes the product 6, the pin shaft 2A rotates approximately half a turn due to the concave groove 2C provided on the extrusion pin shaft 2A and the convex portion 3B provided on the bearing ring 3A. Accordingly, the pin tip 2B also rotates approximately 1/2 turn.
ピン先２Ｂと製品６とは成型時のスチーム加熱
によつて融着しているが、ピン先にも製品にも粘
着性は無いから、若干でも移動し融着部が解かれ
れば再び融着することはない。又、極めて軽量で
あり、且又、製品の肉厚が薄く押出しピンのピン
先によつて破損するおそれがある為、直径50mmの
ピン先を使用しているものは、ピン先と製品との
融着が解けても、その間に狭まつている冷却水の
張力によつて密着し落下しないものもある。 The pin tip 2B and the product 6 are fused together by steam heating during molding, but since neither the pin tip nor the product has adhesive properties, if the fused part moves even slightly and the fused part is undone, they will be fused again. I never wear it. In addition, it is extremely lightweight, and since the wall thickness of the product is thin and there is a risk of it being damaged by the tip of the extrusion pin, products that use a pin tip with a diameter of 50 mm should have a close contact between the pin tip and the product. Even if the fusion is broken, there are some that do not fall because of the tension of the cooling water between them.
この場合は第４図の如くピン先２Ｂの表面に不
規側な溝２Ｂ１を設けたものは、この溝２Ｂ１も
回転するので、この密着も同時に解くことが出来
る。 In this case, if an irregular groove 2B1 is provided on the surface of the pin tip 2B as shown in FIG. 4, this groove 2B1 also rotates, so that this close contact can be released at the same time.
考案者の実験では、金型面積550mmmm×750mm、
製品寸法220mm×125mm×40mm、箱型８個取の全自
動機で実験したところ、本考案の装置なしでは５
〜６回に１回の割りで離型不良が発生していた
が、本考案装置設置後は120シヨツト継続作動中、
全く１度も離型不良は発生しなかつた。 In the inventor's experiments, the mold area was 550mmmm x 750mm,
When experimenting with a fully automatic box-shaped 8-piece machine with product dimensions of 220 mm x 125 mm x 40 mm, it was found that without the device of this invention, 5.
~1 in 6 mold release defects occurred, but after installing the device of this invention, 120 shots were continuously operated.
No defective mold release occurred at all.
第１図は全体の断面図、第２図は押出しピンの
斜視図、第３図は軸受部の拡大斜視図、第４図は
ピン先の他の実施例の斜視図である。
１……回転する離型用押出し装置、２……押出
しピン、３……金型。
FIG. 1 is a sectional view of the entire structure, FIG. 2 is a perspective view of the push-out pin, FIG. 3 is an enlarged perspective view of the bearing, and FIG. 4 is a perspective view of another embodiment of the pin tip. 1... Rotating mold release extrusion device, 2... Extrusion pin, 3... Mold.
Claims (1)
体樹脂を融着成型する金型３において、上記押
出しピン２は軸２Ａとピン先２Ｂとからなり、
上記軸２Ａは、外周面に当該軸の長手方向をも
つて若干ねじれのある凹溝２Ｃを刻設すると共
に、上記金型３に設けられた押出しピンの軸受
リング３Ａの内面に上記凹溝２Ｃに対応する凸
部３Ｂが突設されていることを特徴とする回転
する離型用押出し装置。 ２ 上記軸2Aには、外周面に当該軸の長手方向
をもつて若干ねじれのある凸条を突設すると共
に、上記軸受リング３Ａの内面には、上記凸条
に対応する凹部が突設されている実用新案登録
請求の範囲第１項記載の回転する離型用押出し
装置。 ３ 上記ピン先２Ｂの外方面には適数本の溝２Ｂ
１を刻設した実用新案登録請求の範囲第１項あ
るいは第２項記載の回転する離型用押出し装
置。[Claims for Utility Model Registration] 1. In a mold 3 for fusion molding a multi-foam resin, the extrusion pin 2 is configured to advance and retreat, the extrusion pin 2 consisting of a shaft 2A and a pin tip 2B,
The shaft 2A has a slightly twisted concave groove 2C in the longitudinal direction of the shaft on its outer peripheral surface, and the concave groove 2C on the inner surface of the bearing ring 3A of the extrusion pin provided in the mold 3. A rotating mold release extrusion device characterized in that a convex portion 3B corresponding to the above is provided in a protruding manner. 2 The shaft 2A has a protruding protrusion extending in the longitudinal direction of the shaft with a slight twist on the outer peripheral surface thereof, and a concave portion corresponding to the protruding protrusion is protruding from the inner surface of the bearing ring 3A. A rotating extrusion device for mold release according to claim 1, which has been registered as a utility model. 3 Appropriate number of grooves 2B are provided on the outer surface of the pin tip 2B.
A rotating extrusion device for mold release according to claim 1 or 2 of the utility model registration claim in which 1 is engraved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5813482U JPS58160120U (en) | 1982-04-20 | 1982-04-20 | Rotating mold release extrusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5813482U JPS58160120U (en) | 1982-04-20 | 1982-04-20 | Rotating mold release extrusion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58160120U JPS58160120U (en) | 1983-10-25 |
| JPS633793Y2 true JPS633793Y2 (en) | 1988-01-29 |
Family
ID=30068539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5813482U Granted JPS58160120U (en) | 1982-04-20 | 1982-04-20 | Rotating mold release extrusion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58160120U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014189004A (en) * | 2013-03-28 | 2014-10-06 | Sekisui Plastics Co Ltd | Ejection pin and foam resin molding device having the same |
-
1982
- 1982-04-20 JP JP5813482U patent/JPS58160120U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58160120U (en) | 1983-10-25 |
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