JPH0123796Y2 - - Google Patents

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Publication number
JPH0123796Y2
JPH0123796Y2 JP6664281U JP6664281U JPH0123796Y2 JP H0123796 Y2 JPH0123796 Y2 JP H0123796Y2 JP 6664281 U JP6664281 U JP 6664281U JP 6664281 U JP6664281 U JP 6664281U JP H0123796 Y2 JPH0123796 Y2 JP H0123796Y2
Authority
JP
Japan
Prior art keywords
vacuum
roller
vacuum forming
synthetic resin
plate
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
Application number
JP6664281U
Other languages
Japanese (ja)
Other versions
JPS57179917U (en
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 filed Critical
Priority to JP6664281U priority Critical patent/JPH0123796Y2/ja
Publication of JPS57179917U publication Critical patent/JPS57179917U/ja
Application granted granted Critical
Publication of JPH0123796Y2 publication Critical patent/JPH0123796Y2/ja
Expired legal-status Critical Current

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  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Description

【考案の詳細な説明】[Detailed explanation of the idea]

考案の目的 Purpose of invention

【産業上の利用分野】[Industrial application field]

本考案は、合成樹脂のフイルムを連続的に真空
成形するためのローラー、とくにその真空抜板の
改良に関する。
The present invention relates to rollers for continuous vacuum forming of synthetic resin films, and particularly to improvements in vacuum punching thereof.

【従来の技術】[Conventional technology]

断熱材や緩衝材として、多数の凹みを有する合
成樹脂フイルムと平らな合成樹脂フイルムとを貼
り合わせ、多数の中空体を形成したシート状の製
品が、広く用いられている。この断熱緩衝材を構
成する多数の凹みを有する合成樹脂フイルムは、
たとえば特公昭37−13782号公報に開示されてい
るように、上記の凹みと同じ形状の凹状型をロー
ラーの外周に多数そなえた真空成形用ローラーを
用いて、真空成形により製造されている。 この種の真空成形用ローラーの凹状型は、従来
は第3図に断面を示す構造のものが一般的であ
る。すなわち、ローラーの外周部1に任意の形状
(通常は円形)の凹み11を設け、その底にやや
小径の真空抜板挿入部12を設けて真空抜板を嵌
め込み、さらにその後方は、真空源(図示してな
い)に連なる吸引路13がある。真空抜板挿入部
12には、たとえば第4図AおよびBに示すよう
な、真空抜板2を嵌め込む。この真空抜板2の小
孔21を通じ、矢印方向に真空吸引を行なつて、
合成樹脂フイルムを成形するわけである。 真空抜板2の構造としては、第4図AおよびB
に示した例のほか、焼結金属を用いたものや、金
網を用いたものもある。焼結金属を用いたもの
は、全体がポーラスであるため小孔21を設ける
必要はないが、目詰りを起しやすいという欠点が
ある。また、焼結金属は表面に凹凸があるから、
成形した製品の表面も粗になり、外観上好ましく
ない。金網の真空抜板は形状が変化しやすいか
ら、上記の挿入部に確実に固定することが困難で
ある。第4図に示した金属板の真空抜板2も、小
孔21の形成法としては打抜きとドリルの両方が
考えられるが、前者は挿入部12に確実に嵌め込
めるような肉厚の製品を与えることができない
し、後者も加工できる孔の深さに制約がある。 真空抜板の別の例として、特公昭52−44357号
公報には、外周面に軸方向の複数の連通溝条を設
けたものを使用する技術が提案されている。しか
し、その技術は、連通溝条の大きさを、ローラー
の内部冷却に使用する水が表面張力により通過し
得ない限度にするため、連通溝条は微細なものと
せざるを得ず、目詰りが起ることは避け難い。
BACKGROUND OF THE INVENTION Sheet-like products are widely used as heat insulating materials and cushioning materials, in which a synthetic resin film having a large number of depressions and a flat synthetic resin film are bonded together to form a large number of hollow bodies. The synthetic resin film with many dents that makes up this insulation cushioning material is
For example, as disclosed in Japanese Patent Publication No. 37-13782, it is manufactured by vacuum forming using a vacuum forming roller having a large number of concave molds having the same shape as the above-mentioned concavities on the outer periphery of the roller. Conventionally, the concave mold of this type of vacuum forming roller generally has a structure whose cross section is shown in FIG. That is, a recess 11 of an arbitrary shape (usually circular) is provided on the outer circumferential portion 1 of the roller, a vacuum punching board insertion part 12 of a slightly small diameter is provided at the bottom of the recess 11, into which the vacuum punching board is inserted, and a vacuum source is inserted behind the recess 11. (not shown). A vacuum punching board 2 as shown, for example, in FIGS. 4A and 4B is fitted into the vacuum punching board insertion portion 12. By performing vacuum suction in the direction of the arrow through the small hole 21 of this vacuum punching plate 2,
This involves molding a synthetic resin film. The structure of the vacuum punched plate 2 is shown in Fig. 4 A and B.
In addition to the examples shown in , there are also those using sintered metal and wire mesh. Those using sintered metal do not need small holes 21 because the entire structure is porous, but they have the disadvantage of being easily clogged. Also, since sintered metal has uneven surfaces,
The surface of the molded product also becomes rough, which is unfavorable in terms of appearance. Since the shape of the vacuum punched wire mesh plate is easily changed, it is difficult to securely fix it to the above-mentioned insertion portion. For the metal plate vacuum punched plate 2 shown in FIG. The latter also has limitations on the depth of holes that can be machined. As another example of vacuum punching, Japanese Patent Publication No. 52-44357 proposes a technique in which a plurality of axially communicating grooves are provided on the outer peripheral surface. However, this technology limits the size of the communicating grooves so that the water used for internal cooling of the roller cannot pass through them due to surface tension, so the communicating grooves have to be made very fine, which prevents clogging. It is difficult to avoid that happening.

【考案が解決しようとする問題点】[Problem that the invention attempts to solve]

本考案の目的は、上記した従来技術の諸問題を
解消し、真空抜板を回転ローラーの凹状型に容易
に嵌め込むことができて確実に固定でき、成形品
の表面は良好な外観を呈し、使用中の目づまりが
ほとんど起らず、しかも真空抜板の製作が容易で
ある真空成形用ローラーを提供することにある。 考案の構成
The purpose of the present invention is to solve the problems of the prior art described above, to easily fit the vacuum punched plate into the concave mold of the rotating roller, to securely fix it, and to provide the surface of the molded product with a good appearance. An object of the present invention is to provide a vacuum forming roller which hardly causes clogging during use and which is easy to manufacture for vacuum punching. Structure of the idea

【問題点を解決するための手段】[Means to solve the problem]

本考案の合成樹脂の連続的真空成形用ローラー
は、第1図および第2図に示すように、ローラー
の外周部1に多数の凹み11を設け、その底にや
や小径の真空抜板を嵌め込み、さらに後方に真空
源に連なる吸引路13をそなえてなる真空成形用
ローラーにおいて、真空抜板3として、板金製で
あつて、板の周縁から中心に向う方向に、中心ま
での距離の1/3〜2/3の深さをもつ切込み31を複
数個、板の厚さを貫通して設けたものを使用した
ことを特徴とする。 切込み31の幅aは、成形しようとする合成樹
脂フイルムの厚さや中空体の大きさにもよるが、
通常は0.3〜0.8mmが適当である。 真空抜板3の厚さtも、同様に使用条件で多少
異なるが、ふつうは1〜5mm程度である。
As shown in Figs. 1 and 2, the roller for continuous vacuum forming of synthetic resin of the present invention has a large number of recesses 11 in the outer peripheral part 1 of the roller, and vacuum punching plates of a slightly smaller diameter are fitted into the bottoms of the recesses 11. In a vacuum forming roller further provided with a suction path 13 connected to a vacuum source at the rear, the vacuum punched board 3 is made of sheet metal and is 1/1 of the distance from the center to the center in the direction from the periphery of the board to the center. It is characterized in that a plurality of cuts 31 having a depth of 3 to 2/3 are provided through the thickness of the plate. The width a of the cut 31 depends on the thickness of the synthetic resin film to be molded and the size of the hollow body.
Usually, 0.3 to 0.8 mm is appropriate. The thickness t of the vacuum punched plate 3 similarly varies somewhat depending on the conditions of use, but is usually about 1 to 5 mm.

【作用】[Effect]

本考案で使用する真空抜板3は、中心に向う方
向の切込みの存在により板全体がスプリングの機
能を有し、これは嵌め込みおよび固定に有用であ
る。 より重要な利点は、凹状型の周囲近くまで切込
みが開口していて、合成樹脂フイルムが凹状型に
沿つて真空成形されて行く過程で、その最後の段
階まで型内の真空が確保される結果、型どおりの
成形が可能になることである。 真空吸引の断面積を大きくとれるということ
は、急速な真空処理ができ、その際の延伸効果に
よつて合成樹脂フイルムの強度を向上させること
が期待できる。 切込みの深さlは、短くては真空吸引される空
気流路の断面積が十分にとれないし、長すぎては
真空抜板の強度に不安があるので、周縁から中心
までの距離の1/3〜2/3の範囲からえらぶ。通常
は、図示したような、ほぼ1/2の深さが最適であ
る。 考案の効果 本考案の真空成形用ローラーは、真空抜板の製
作が容易であつて、その形状および寸法に対する
制約なく、用途に応じたものを廉価に用意でき
る。その凹状型への嵌め込みは容易であり、固定
は確実にできる。 切り込みは、その連続した形状と、断面積の大
きいことから、目づまりを起すことが少ない。 前記した、型どおりの成形ができるということ
は、製品である断熱緩衝材の外観を向上させ、機
能を高めるのに役立つ。 なお、真空抜板は、円形のものを例にとつて説
明したが、その形状はもちろんこれに限られるこ
となく、成形しようとする所望の中空体形状に合
わせた凹状型に従つて、三角形、四角形、菱形そ
のほか任意の形状にえらぶことができる。
In the vacuum punched plate 3 used in the present invention, the entire plate has a spring function due to the presence of a notch in the direction toward the center, which is useful for fitting and fixing. A more important advantage is that the notch opens close to the periphery of the concave mold, and as the synthetic resin film is vacuum-formed along the concave mold, the vacuum inside the mold is maintained until the final stage. , it becomes possible to mold according to the mold. The fact that the cross-sectional area of the vacuum suction can be increased allows rapid vacuum processing, and it is expected that the strength of the synthetic resin film will be improved by the stretching effect at that time. The depth l of the cut should be set to 1/1 of the distance from the periphery to the center, because if it is too short, the cross-sectional area of the vacuum-suctioned air flow path will not be sufficient, and if it is too long, there will be concerns about the strength of the vacuum punched plate. Select from the range of 3 to 2/3. Usually, a depth of approximately 1/2 as shown is optimal. Effects of the Invention The vacuum forming roller of the present invention can be easily manufactured into a vacuum punched sheet, and there are no restrictions on its shape and dimensions, and it can be prepared at a low cost depending on the application. It is easy to fit into the concave mold and can be securely fixed. Because the notch has a continuous shape and a large cross-sectional area, clogging is less likely to occur. The fact that it can be molded according to the shape described above is useful for improving the appearance and functionality of the product, the heat insulating cushioning material. The vacuum punching board has been explained using a circular one as an example, but the shape is of course not limited to this, and can be triangular, triangular, etc. according to the concave mold that matches the shape of the desired hollow body to be molded. You can choose any shape such as a square, diamond, or other shape.

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

第1図は、本考案の真空成形用ローラーの主要
部の構造を示す断面であり、第2図は第1図の真
空成形用ローラーに使用した真空抜板の平面図で
ある。第3図は、従来の真空成形用ローラーの凹
状型の構造を示す断面図であり、第4図Aは第3
図の真空成形用ローラーに使用した真空抜板の断
面図、第4図Bはその平面図である。 1……ローラー外周部、11……凹み、13…
…真空吸引路、2……真空抜板(従来例)、3…
…真空抜板(本考案)。
FIG. 1 is a cross-sectional view showing the structure of the main part of the vacuum forming roller of the present invention, and FIG. 2 is a plan view of a vacuum punched plate used in the vacuum forming roller of FIG. 1. FIG. 3 is a sectional view showing the concave structure of a conventional vacuum forming roller, and FIG.
FIG. 4B is a sectional view of a vacuum punched plate used for the vacuum forming roller shown in the figure, and FIG. 4B is a plan view thereof. 1... Roller outer periphery, 11... Recess, 13...
...Vacuum suction path, 2...Vacuum punching board (conventional example), 3...
...Vacuum punching (this invention).

Claims (1)

【実用新案登録請求の範囲】 (1) ローラーの外周部1に多数の凹み11を設
け、その底にやや小径の真空抜板を嵌め込み、
さらに後方に真空源に連なる吸引路13をそな
えてなる合成樹脂の連続的真空成形用ローラー
において、真空抜板3として、板金製であつ
て、板の周縁から中心に向う方向に、中心まで
の距離の1/3〜2/3の深さをもつ切込み31を複
数個、板の厚さを貫通して設けたものを使用し
たことを特徴とする真空成形用ローラー。 (2) 真空抜板の厚さが1〜5mm、切込みの幅が
0.3〜0.8mmである実用新案登録請求の範囲第1
項の真空成形用ローラー。
[Claims for Utility Model Registration] (1) A large number of recesses 11 are provided on the outer circumferential portion 1 of the roller, and a vacuum punching plate of a slightly smaller diameter is inserted into the bottom of the recesses 11.
Furthermore, in a roller for continuous vacuum forming of synthetic resin, which is provided with a suction path 13 connected to a vacuum source at the rear, the vacuum punched board 3 is made of sheet metal, and is made of sheet metal, and is A vacuum forming roller characterized in that a plurality of notches 31 having a depth of 1/3 to 2/3 of the distance are provided through the thickness of the plate. (2) The thickness of the vacuum punched board is 1 to 5 mm, and the width of the cut is
The first claim for utility model registration is 0.3 to 0.8 mm.
Vacuum forming roller.
JP6664281U 1981-05-11 1981-05-11 Expired JPH0123796Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6664281U JPH0123796Y2 (en) 1981-05-11 1981-05-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6664281U JPH0123796Y2 (en) 1981-05-11 1981-05-11

Publications (2)

Publication Number Publication Date
JPS57179917U JPS57179917U (en) 1982-11-15
JPH0123796Y2 true JPH0123796Y2 (en) 1989-07-20

Family

ID=29862670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6664281U Expired JPH0123796Y2 (en) 1981-05-11 1981-05-11

Country Status (1)

Country Link
JP (1) JPH0123796Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5507950B2 (en) * 2009-10-13 2014-05-28 株式会社イノアックコーポレーション Method for manufacturing sound absorbing member
JP6532281B2 (en) * 2015-05-07 2019-06-19 川上産業株式会社 Bubble sheet and vacuum plug

Also Published As

Publication number Publication date
JPS57179917U (en) 1982-11-15

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