JPS59109313A - Manufacture of plastic vacuum-molded item with partially thickened section or reinforcing rib - Google Patents
Manufacture of plastic vacuum-molded item with partially thickened section or reinforcing ribInfo
- Publication number
- JPS59109313A JPS59109313A JP22053482A JP22053482A JPS59109313A JP S59109313 A JPS59109313 A JP S59109313A JP 22053482 A JP22053482 A JP 22053482A JP 22053482 A JP22053482 A JP 22053482A JP S59109313 A JPS59109313 A JP S59109313A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- partial
- vacuum
- mold
- heated
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
- B29C70/887—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced locally reinforced, e.g. by fillers
Abstract
Description
【発明の詳細な説明】
本発明は、真空成形で部分的厚肉部や補強リブを有する
プラスチック製品を製造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing plastic products having partially thickened parts and reinforcing ribs by vacuum forming.
従来、部分的に板厚が厚い製品を熱可塑性樹脂の真空成
形によシ成形する場合にはプラグアシスト又はシートを
ブローして真空成形を行なっているが、製品の極部的々
箇所の板厚が薄くなってしまい、その対策に苦慮してい
る。Conventionally, when forming partially thick products by vacuum forming thermoplastic resin, vacuum forming is performed by plug assist or by blowing a sheet. The thickness has become thinner, and we are struggling to find a solution.
また製品の裏面に補強リブをつけることは不可能であシ
、これらの点が射出成形品と比べた場合の真空成形品の
大きな欠点となっている。Furthermore, it is impossible to attach reinforcing ribs to the back surface of the product, and these points are major drawbacks of vacuum-formed products compared to injection-molded products.
本発明は斯る現況に鑑みて発明されたものであシ、部分
的厚肉部や裏面に補強リブを有するプラスチック製品を
真空成形方法で成形できる様にすることを目的とするも
のである。The present invention was invented in view of the current situation, and it is an object of the present invention to make it possible to mold plastic products having reinforcing ribs on partially thick portions or on the back surface using a vacuum forming method.
斯る目的を達成するための本発明の構成は、型面側を製
品の表面とする真空成形において、加熱された成形用シ
ートの所要の部分、即ち板厚を厚くしだ）補強リブを設
ける箇所上に、別途加熱された適宜大きさの部分的シー
トを載せ、その部分を部分的上型で加圧して真空成形す
るものである。The structure of the present invention to achieve such an object is to provide reinforcing ribs in required portions of the heated forming sheet, that is, to increase the plate thickness, in vacuum forming with the mold side as the surface of the product. A separately heated partial sheet of an appropriate size is placed on the area, and the area is vacuum-formed by applying pressure with a partial upper mold.
以下、本発明の一実施例を図に基づいて説明する。Hereinafter, one embodiment of the present invention will be described based on the drawings.
図面は本発明方法の工程を示す模式図で、図面によれば
本発明を実施するための装置は、従来の真空成形の装置
に部分的上型（１）が付加されている。The drawings are schematic diagrams showing the steps of the method of the present invention. According to the drawings, the apparatus for carrying out the present invention is a conventional vacuum forming apparatus with a partial upper mold (1) added.
而して、先ず成形用の熱可塑性樹脂シート（２）を真空
成形適性温度までヒーター（３）で加熱する（第１図）
と共にこのシート（２）の所定の個所、即ち製品に）に
したとき肉厚を厚くしたヤ、補強リプ（４）を設けよう
とする個所に相当する部分の上に、別の加熱したシート
（以下、部分シート（５）という）が重ねられる。First, the thermoplastic resin sheet (2) for molding is heated with a heater (3) to a temperature suitable for vacuum molding (Figure 1).
At the same time, another heated sheet (2) is placed on the part corresponding to the part where the reinforcing lip (4) is to be provided, so that the wall thickness is increased when the sheet (2) is placed at a predetermined location (i.e., on the product). The partial sheets (hereinafter referred to as partial sheets (5)) are stacked.
部分シート（勾は成形用のシート（２）と同材質の熱可
塑性樹脂のシートであシ、予め必要な大きさと厚さに形
成さ些ておシ、別の場所において加熱台（６）上でヒー
タニ（７）によ多成形適性温度まで加熱した後、シート
（２）の所定の個所上に載せられる。A partial sheet (the gradient is a sheet of thermoplastic resin made of the same material as the sheet for molding (2)) is formed in advance to the required size and thickness, then placed on a heating table (6) in a separate location. After being heated to a temperature suitable for multi-forming using a heater (7), it is placed on a predetermined portion of the sheet (2).
（第２図）
上記、成形用シート（２ンの加熱及びこのシート（２ン
への部分シート（５）の載置は、真空成形型（８）上で
行なってもよいし、別の場所で行い、然る後にシート（
乃を真空成形型（８）の上に移動させるようにしてもよ
いが、前者の場合、ヒーター（３）は次の工程の邪魔に
ならないようにシート加熱後、真空成形型（８）上から
移動させることが必要であシ、後者の場合、シート（２
）及び部分シート（５）が真空成形適性温度以下に冷却
しないうちにシート（２）を真空成形型（８）の上に移
動させることが必要となる。(Fig. 2) The heating of the forming sheet (2) and the placement of the partial sheet (5) on the sheet (2) may be performed on the vacuum forming mold (8) or at a separate location. , and then the sheet (
Alternatively, the sheet may be moved onto the vacuum mold (8), but in the former case, the heater (3) is moved from above the vacuum mold (8) after heating the sheet so as not to interfere with the next process. In the latter case, the seat (2
) and the partial sheet (5) must be moved onto the vacuum forming mold (8) before the sheet (2) cools below the temperature suitable for vacuum forming.
次に真空成形型（８）をシリンダー（９）によシ上昇さ
せて真空成形を行い、同時に部分的上型（１）をシリン
ダー（６）で下降させて成形用シート（２）上の部分シ
ー ） （５）を加圧する。（第３図）真空成形型（８
）は、′製品（Ａ）の表色ル状に対応する成形面を有し
てお多、図示例においては成形面の１箇所に凹所（ロ）
が設けられているみ部分的上型（１）は真率成形型（８
）の凹所（ロ）に対応して核部に必要な間隙を存して嵌
合する雄型状に形成されて、その下面には補強リプ成形
用スリット（６）が設けられている。Next, the vacuum forming mold (8) is raised by the cylinder (9) to perform vacuum forming, and at the same time, the partial upper mold (1) is lowered by the cylinder (6) to form the part on the molding sheet (2). Pressurize (5). (Figure 3) Vacuum forming mold (8
) has a molding surface corresponding to the color surface of product (A), and in the illustrated example, there is a recess (b) in one place on the molding surface.
The partial upper mold (1) is provided with a true ratio mold (8
It is formed into a male shape that fits into the core portion with a necessary gap in correspondence with the recess (b) of (b), and a reinforcing lip molding slit (6) is provided on its lower surface.
そして、この部分的上型（１）は真空成形型（８）の凹
所（ロ）の真上に配置され、真空成形時、凹所（ロ）内
に下降嵌合し、成形用シート（２）上に載せられた部分
シー、ト（５）を加圧する。This partial upper mold (1) is placed directly above the recess (B) of the vacuum forming mold (8), and is fitted downwardly into the recess (B) during vacuum forming, and the molding sheet ( 2) Pressurize the partial sheet (5) placed on top.
即ち、上記部分シート（５）は、成形用のシート（２）
の真空成形型（８）の凹所（ロ）に吸引被着される部分
に載せられておシ、部分的上型（１）の加圧（よシ、部
分シート（５）を構成する樹脂が上記部分的上型（１）
と真空成形型（８）の凹所（ロ）内面との間に回シ込み
、同時に部分的上型（１）の補強リプ成形用スリットに
）内にも流入充填され、この状態で部分シート（５）と
成形用のシート（２）は一体に溶着する。 。That is, the partial sheet (5) is a molding sheet (2).
The resin constituting the partial sheet (5) is placed on the part to be suctioned and adhered to the recess (B) of the vacuum forming mold (8) and pressurized by the partial upper mold (1). is the above partial upper mold (1)
and the inner surface of the recess (b) of the vacuum forming mold (8), and at the same time, it also flows into the reinforcing lip molding slit of the partial upper mold (1), and in this state, the partial sheet (5) and the molding sheet (2) are welded together. .
而して、両シート（２） （５）の冷却後、真空成形型
（８）の真空吸引を停止すると共に部分的上型（１）を
上昇させて脱型すれば製品に）を得ることができ、真空
成形型（８）、の凹所（ロ）に対応していた成形用シー
ト（２）の部分は製品に）において表面側に突出する部
分（１４として形成され、該部分α◆は従来の真空成形
では板厚が薄くなる所であるにもかかわら・ず、他の部
分と同じかもし、くけそれ以上の肉厚に成形され、裏面
には補強リプに）も一体に形成される。（第４図）
尚、真空成形型（８）の成形面に絞模様を付け、製品（
Ａ）表面に絞模、・様を表わすことも任意・にできる。After cooling both sheets (2) and (5), the vacuum suction of the vacuum forming mold (8) is stopped, and the partial upper mold (1) is lifted to remove the mold to obtain a product). The part of the molding sheet (2) that corresponded to the recess (b) of the vacuum mold (8) is formed as a part (14) that protrudes toward the surface side of the product), and the part α◆ Although this is where the thickness of the board becomes thinner in conventional vacuum forming, it is formed to be the same or thicker than the other parts, and the reinforcing lip on the back side is also formed integrally. . (Fig. 4) In addition, a drawing pattern is applied to the molding surface of the vacuum forming mold (8), and the product (
A) It is possible to express a shibori pattern or pattern on the surface as desired.
図中に）は成形用のシート（２）を挾んで固定及び移動
させるためのツメである。In the figure) are claws for holding and moving the molding sheet (2).
本発明は以上の様に構成したから、真空成形品の板厚を
部分的に厚くした力、裏側に補強リプを設けることを真
空成形の工程時同時に行うことができる。Since the present invention is configured as described above, it is possible to partially increase the thickness of the vacuum-formed product and to provide a reinforcing lip on the back side at the same time during the vacuum forming process.
従って、従来の真空成形では避けることができなかった
極部的な箇所が薄くなる問題を解決し、全体が均一な板
厚の鯉品を得ることが容易にできる。Therefore, it is possible to solve the problem of thinning in extreme areas, which could not be avoided with conventional vacuum forming, and to easily obtain a carp product with a uniform thickness throughout.
また、板厚を部分的に厚くしても製品の裏側に肉を盛る
ので、製品表面側の見栄えを悪くすることがない。Furthermore, even if the thickness of the plate is partially increased, the meat is built up on the back side of the product, so the appearance of the front side of the product does not deteriorate.
依って所期の目的を達成し得る。Therefore, the intended purpose can be achieved.
【図面の簡単な説明】
図面は本発明の工程を模式的に示すもので、第１図は成
形用のシードの加熱工程、第２図は成形用シートの上に
部分シートを載せる工程、第８図は真空成形の工程、第
４図は脱型工程を示す。
（１）・・・部分的上型 （２）・−成形用シー
ト（５）−−一部分シート （８）・・−真空成
形型Ｃつ
−）
ち太
＼了
塚[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings schematically show the steps of the present invention. Figure 1 shows the process of heating seeds for molding, Figure 2 shows the process of placing a partial sheet on the molding sheet, and Figure 2 shows the process of heating the seeds for molding. Figure 8 shows the vacuum forming process, and Figure 4 shows the demolding process. (1)... Partial upper mold (2) - Molding sheet (5) - Partial sheet (8)... - Vacuum forming mold C) Chita\Ryozuka
Claims (1)
温度に加熱した成形用シートの所要箇所に、別の場所で
成形適性温度に加熱した所要の大きさと厚さを有する部
分シートを載せ、その部分を部分的上型で加圧すると同
時に真空成形し、２枚のシートを溶着して一体に成形す
ることを特徴とする部分的厚肉部又は補強リブを有する
プラスチック真空成形品の製造方法。In vacuum forming with the mold side as the surface of the product, a partial sheet having the required size and thickness heated to a suitable molding temperature at a different location is placed on a required part of a molding sheet heated to a suitable molding temperature, A method for manufacturing a plastic vacuum-formed product having a partial thick-walled part or reinforcing ribs, characterized in that the part is pressurized with a partial upper mold and vacuum-formed at the same time, and the two sheets are welded and molded into one piece. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22053482A JPS6038257B2 (en) | 1982-12-15 | 1982-12-15 | Method for manufacturing a plastic vacuum-formed product having partially thickened parts or reinforcing ribs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22053482A JPS6038257B2 (en) | 1982-12-15 | 1982-12-15 | Method for manufacturing a plastic vacuum-formed product having partially thickened parts or reinforcing ribs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59109313A true JPS59109313A (en) | 1984-06-25 |
| JPS6038257B2 JPS6038257B2 (en) | 1985-08-30 |
Family
ID=16752499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22053482A Expired JPS6038257B2 (en) | 1982-12-15 | 1982-12-15 | Method for manufacturing a plastic vacuum-formed product having partially thickened parts or reinforcing ribs |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6038257B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016147574A (en) * | 2015-02-12 | 2016-08-18 | トヨタ紡織株式会社 | Method for manufacturing undercover for vehicle |
-
1982
- 1982-12-15 JP JP22053482A patent/JPS6038257B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016147574A (en) * | 2015-02-12 | 2016-08-18 | トヨタ紡織株式会社 | Method for manufacturing undercover for vehicle |
| US10232563B2 (en) | 2015-02-12 | 2019-03-19 | Toyota Boshoku Kabushiki Kaisha | Method of producing undercover for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6038257B2 (en) | 1985-08-30 |
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