JPH0939085A - Film sticking simultaneous trimming type electric heater attaching structure - Google Patents
Film sticking simultaneous trimming type electric heater attaching structureInfo
- Publication number
- JPH0939085A JPH0939085A JP21256295A JP21256295A JPH0939085A JP H0939085 A JPH0939085 A JP H0939085A JP 21256295 A JP21256295 A JP 21256295A JP 21256295 A JP21256295 A JP 21256295A JP H0939085 A JPH0939085 A JP H0939085A
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- electric heating
- heat
- resistant material
- electric heater
- 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
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は真空成形により成形
品の表面に被膜を貼着し、同時に該被膜のトリミングラ
インを溶断する機能を有する被膜貼着トリミング型に関
する。さらに詳しくは、成形品受型上面に溶断手段であ
る電熱体を固定保持するための取付構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film-adhesive trimming die having a function of adhering a film to the surface of a molded article by vacuum forming and, at the same time, fusing the trimming line of the film. More specifically, it relates to a mounting structure for fixing and holding an electric heating body, which is a fusing means, on the upper surface of a molded product receiving mold.
【０００２】[0002]
【従来の技術】一般に自動車の内装部品等に用いられる
成形品には、加飾もしくは後工程で施工する発泡樹脂の
回り込みを防止するために、真空成形により成形品表面
にプラスチック製のシートやフィルム等の被膜を貼着す
る。また、被膜を貼着した成形品から外周部等被膜の不
要な部分を除去するために、被膜のトリミングラインを
型に固定保持した電熱体により溶断する方法がとられて
いる。上記電熱体の型への固定は、電熱体が熱の影響を
受けて膨張収縮を繰り返し、変形や位置ずれを起こすの
を防止するために施されるものであるが、その固定方法
は図５に示すように成形品受型上面に設置されたテフロ
ンあるいはレンガ等の非通電性の耐熱材１１の上面に、
電熱体５を逆Ｕ字形の固定金具１２によって固定保持す
るのが通常の方法である。2. Description of the Related Art In general, molded articles used for automobile interior parts and the like have a plastic sheet or film formed on the surface of the molded article by vacuum molding in order to prevent wrapping of a foamed resin which is decorated or is applied in a later step. Apply a film such as. Further, in order to remove an unnecessary portion of the coating such as the outer peripheral portion from the molded article to which the coating is adhered, a method of fusing the trimming line of the coating with an electric heating element fixedly held in a mold is adopted. The fixing of the electric heating element to the mold is carried out in order to prevent the electric heating element from repeatedly expanding and contracting under the influence of heat to be deformed or displaced, and the fixing method is as shown in FIG. As shown in, on the upper surface of the non-conductive heat-resistant material 11 such as Teflon or brick installed on the upper surface of the molded product,
It is a usual method that the electric heating element 5 is fixed and held by an inverted U-shaped fixing member 12.
【０００３】[0003]
【発明が解決しようとする課題】ところが、被膜を溶断
するべく電熱体５に通電した際、固定金具１２により固
定保持された部位の電熱体５の温度が他の部位に比べて
低く、固定保持した部位での被膜溶断ができないといっ
た不具合が発生する問題があった。上記のような問題が
起きる原因は、電熱材５と耐熱材１１の固定部位におい
て電熱体５の熱が耐熱材１１及び固定金具１２に奪われ
て温度が上昇しないためと考えられる。本発明は上記の
問題を解決するために成されたものであり、電熱体の固
定部位での温度低下をなくして、被膜の溶断を確実に行
うことを目的とする。However, when the electric heating element 5 is energized to melt and cut the coating, the temperature of the electric heating element 5 fixed and held by the fixing metal fitting 12 is lower than that of other portions, and the fixing and holding is performed. There was a problem that a trouble such as the inability to melt-cut the coating film at the part where it was formed occurs. It is considered that the above-mentioned problem occurs because the heat of the electric heating element 5 is deprived by the heat-resistant material 11 and the fixing metal fitting 12 at the fixing portion of the electric heating material 5 and the heat-resistant material 11 so that the temperature does not rise. The present invention has been made to solve the above problems, and an object of the present invention is to eliminate the temperature drop at the fixing portion of the electric heating element and to reliably melt the coating film.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に本発明における被膜貼着同時トリミング型の電熱体取
付構造は、枠体の上部に成形品受型を形成し、該成形品
受型の表面外周部に非通電性の耐熱材を敷設し、該耐熱
材上面にトリミングの形状に電熱体を敷設した被膜貼着
同時トリミング型の電熱体取付構造であって、該耐熱材
に上下に貫通する掘り込みを設け、該掘り込み部位にて
固定金具で電熱体を該耐熱材に非接触状態にして固定保
持したことを特徴としている。前記掘り込みにおける前
記電熱体の長手方向に対応する開口寸法が、前記電熱体
の横幅寸法に対し二倍以上であることが好ましい。ま
た、前記掘り込みの形状が上面視で円形であることが好
ましい。さらに、前記掘り込みの形状が、側面視におい
て上部の開口寸法に対し下部の開口寸法が小さいことが
好ましい。In order to achieve the above object, in the present invention, an electric heating element mounting structure of simultaneous film attachment and trimming type has a molded article receiving mold formed on an upper part of a frame body, and the molded article receiving mold is formed. A non-conducting heat-resistant material is laid on the outer periphery of the surface, and an electric heating element is laid on the upper surface of the heat-resistant material in a trimming shape. It is characterized in that a dug through is provided, and an electric heating element is fixed and held in a non-contact state with the heat resistant material by a fixing metal fitting at the dug portion. It is preferable that an opening dimension corresponding to the longitudinal direction of the electric heating body in the dug-up is twice or more as large as a lateral width dimension of the electric heating body. Further, it is preferable that the shape of the dug is circular in a top view. Further, it is preferable that the dug shape has a lower opening size smaller than an upper opening size in a side view.
【０００５】[0005]
【発明の実施の形態】本発明の実施の形態を図面に基づ
いて詳しく説明する。図１は被膜貼着同時トリミング型
の断面構造を示す。箱状枠体１の上部には成形品受型２
が形成されている。内部には中空室３が画成されてい
て、図示しない経路により吸引源に接続されている。該
成形品受型２には上下に貫通する複数の吸引孔４が穿設
されている。また、該受型２の上面周縁部には、成形品
Ｓの外周と相似した環状形状を成した電熱体５が耐熱材
に固定金具で保持されている。なお、７は被膜Ｒを保持
するためのクランプ装置である。電熱体５は通電するこ
とにより被膜Ｒを溶断することのできる温度まで昇温す
る物質であり、一般にはニッケル−クロム系合金、鉄−
クロム系合金、ニッケル−クロム−鉄系合金よりなる線
材や帯材である。特に敷設性、形状形成の自由度等から
みて有利なものは、径が１ｍｍから５ｍｍ程度の丸線材
である。成形品Ｓは木質繊維をプレス成形したものや、
ＰＰやＡＢＳ樹脂を成形して吸引用の孔を設けたもので
あり、いずれも通気性を有する。被膜Ｒはプラスチック
製のシートやフィルムであって、色彩や模様が施されて
いる場合もある。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a cross-sectional structure of a film attachment simultaneous trimming type. On the upper part of the box-shaped frame 1 is a molded product receiving mold 2
Are formed. A hollow chamber 3 is defined inside and is connected to a suction source by a path (not shown). The molded product receiving mold 2 has a plurality of suction holes 4 penetrating vertically. In addition, an electric heating element 5 having an annular shape similar to the outer periphery of the molded product S is held by a heat-resistant material on the peripheral edge of the upper surface of the receiving mold 2 by a fixing metal fitting. A clamp device 7 holds the coating R. The electric heating element 5 is a substance that is heated to a temperature at which the coating R can be melted and cut by being energized. Generally, nickel-chromium alloy, iron-
Wires and strips made of chromium alloys and nickel-chromium-iron alloys. In particular, a round wire having a diameter of about 1 mm to 5 mm is advantageous in terms of layability, the degree of freedom in shape formation, and the like. The molded product S is a product obtained by press molding wood fiber,
It is made of PP or ABS resin and is provided with suction holes, both of which have air permeability. The coating R is a plastic sheet or film, and may be colored or patterned.
【０００６】上記被膜貼着同時トリミング型による実際
の作業工程を説明する。まず受型２に成形品Ｓを載置す
る。この成形品Ｓの表面にはあらかじめ接着剤が塗布さ
れている。被膜Ｒはクランプ枠７に保持して、図示しな
いヒータにより加熱軟化させる。次いでクランプ枠７を
受型２上に移動して成形品Ｓに被膜Ｒを覆い被せる。そ
して、受型２に吸引を作用させて成形品Ｓの表面に被膜
Ｒを真空成形して貼着し、図１の状態にする。さらに、
電熱体５を通電して昇温させ、被膜Ｒのトリミングライ
ンを溶断する。最後に吸引と通電を切ってから、できた
製品と被膜の不要部分を型から取り出す。[0006] An actual working process by the above-mentioned simultaneous film application and trimming type will be described. First, the molded product S is placed on the receiving mold 2. An adhesive is applied to the surface of the molded product S in advance. The coating film R is held on the clamp frame 7 and heated and softened by a heater (not shown). Next, the clamp frame 7 is moved onto the receiving mold 2 to cover the molded product S with the coating R. Then, suction is applied to the receiving mold 2 to form the coating film R on the surface of the molded product S by vacuum forming and adhering it to the state shown in FIG. further,
The electric heating element 5 is energized to raise the temperature and the trimming line of the coating R is melted. Finally, after removing the suction and energization, the product and the unnecessary portion of the coating are removed from the mold.
【０００７】次に本発明の電熱体取付構造の実施の形態
を説明する。図２は電熱体５の固定部位の断面拡大図で
ある。図中１１は耐熱材、１２は固定金具、１３は絶縁
材、１４は耐熱材１１に設けた掘り込みである。電熱体
５は線材よりなる固定金具１２により耐熱材１１に設け
た掘り込み１４を通過し、けん引固定されている。すな
わち電熱体５は耐熱材１１に対して非接触状態にして固
定保持されている。掘り込み１４の大きさについては各
種の実験を行ったが、掘り込み１４における前記電熱体
５の長手方向に対応する開口寸法を、前記電熱体５の横
幅寸法に対し二倍以上にすると効果が顕著であることが
わかった。また、掘り込み１４を製作する方法はドリル
で耐熱材１１に穿設する方法が最も容易かつ正確であ
る。上記のような理由により、電熱体には丸線材を使用
し、掘り込みはドリルで穿設した円形で、その大きさは
円の直径が電熱体の線径の二倍であるのが最も一般的な
実施の形態であるといえる。Next, an embodiment of the electric heating element mounting structure of the present invention will be described. FIG. 2 is an enlarged cross-sectional view of the fixing portion of the electric heating body 5. In the figure, 11 is a heat-resistant material, 12 is a fixture, 13 is an insulating material, and 14 is a dug provided in the heat-resistant material 11. The electric heating element 5 is fixed by towing by passing through a digging 14 provided in the heat-resistant material 11 by a fixing member 12 made of a wire material. That is, the electric heating body 5 is fixed and held in a non-contact state with the heat resistant material 11. Various experiments were conducted on the size of the dugout 14, but it is effective to make the opening dimension corresponding to the longitudinal direction of the electric heating body 5 in the dugout 14 twice or more the lateral width dimension of the electric heating body 5. It turned out to be remarkable. Further, the method of manufacturing the dug-up 14 is the easiest and the most accurate method in which the heat-resistant material 11 is drilled. For the above reasons, a round wire is used for the heating element, and the dug is a circular shape drilled by a drill, and the size of the circle is the diameter of the circle is twice the diameter of the heating element. It can be said that this is an exemplary embodiment.
【０００８】前記固定金具１２の材質は高温でも変質し
ないステンレスのような材質のものがよい。電熱体５と
同じ材質のものでもよい。さらに丸断面の線材であれば
施工の作業も容易である。線径は電熱体５よりも細いも
のがよい。該固定金具１２による電熱体５の固定保持に
は様々な方法があるが、本実施例では以下のような構成
とした。図２は固定金具１２を中央部で折り曲げ、電熱
体５を挾んで保持した状態にし、両端を耐熱材１１の掘
り込み１４を通過させ、該耐熱材１１の裏面で折り曲げ
た構造である。折り曲げた先端部は耐熱材１１と絶縁材
１３とで挾んで固定する。このとき耐熱材１１もしくは
絶縁材１３のどちらかに固定金具１２の折り曲げた先端
部が収まるだけの溝１５を設けておくと、施工後固定金
具１２の位置ずれが起きにくい。また、図３のように電
熱体５に直接固定金具１２を溶接してもよい。The material of the fixing member 12 is preferably a material such as stainless steel which does not deteriorate even at high temperatures. The same material as the electric heating body 5 may be used. Furthermore, if the wire has a round cross section, the work of construction is easy. The wire diameter is preferably smaller than that of the electric heating element 5. There are various methods for fixing and holding the electric heating element 5 by the fixing member 12, but in the present embodiment, the following configuration is adopted. FIG. 2 shows a structure in which the fixing metal fitting 12 is bent at the center, the electric heating element 5 is sandwiched and held, both ends are passed through the dugout 14 of the heat resistant material 11, and the back surface of the heat resistant material 11 is bent. The bent tip portion is sandwiched between the heat resistant material 11 and the insulating material 13 to be fixed. At this time, if a groove 15 is provided in either the heat-resistant material 11 or the insulating material 13 so that the bent tip of the fixing metal fitting 12 can be accommodated, the positional deviation of the fixing metal fitting 12 is less likely to occur after the construction. Alternatively, the fixing member 12 may be directly welded to the electric heating element 5 as shown in FIG.
【０００９】他の実施例として、図４のように固定金具
１２の折り曲げた先端部を両方とも型の外側に向けて固
定する方法もある。この場合、固定金具１２の先端部を
型の外側から引っ張りながら耐熱材１１を型に固定する
ことができるので、電熱体５の位置決めが容易である。
このとき、図４のように掘り込み１４の形状を側面視で
上部の開口に対し下部の開口を小さくしておくと、施工
後固定金具１２の位置ずれが起きにくい。As another embodiment, as shown in FIG. 4, there is also a method of fixing both of the bent tip portions of the fixing member 12 toward the outside of the mold. In this case, since the heat-resistant material 11 can be fixed to the mold while pulling the tip of the fixing metal fitting 12 from the outside of the mold, the electric heating element 5 can be easily positioned.
At this time, as shown in FIG. 4, if the shape of the dug-up 14 is made smaller in the lower opening than in the upper opening in a side view, the fixing bracket 12 is less likely to be displaced after construction.
【００１０】[0010]
【発明の効果】本発明による被膜貼着同時トリミング型
の電熱体取付構造は上記の説明から明らかなように、受
型の耐熱材に掘り込みを設け、該部位において固定金具
により電熱体を耐熱材に非接触状態にして固定保持する
構造としたので、固定部位において電熱体と耐熱材が直
接的に接触していないことによって電熱体の固定部位で
の温度低下がなくなり、被膜の溶断を確実に行うことが
可能となる。As is apparent from the above description, the structure for simultaneously trimming and heating the electric heating element of the present invention is provided with a digging in the heat-resistant material of the receiving type, and the electric heating element is heat-resistant by the fixing metal fitting at the portion. Since the structure is fixed and held in a non-contact state with the material, there is no direct temperature contact between the heating element and the heat-resistant material at the fixing part, so there is no temperature drop at the fixing part of the heating element and the fusion of the coating is ensured. It becomes possible to do it.
【図１】本発明の実施例を示す、被膜貼着同時トリミン
グ型の縦断面図である。FIG. 1 is a vertical cross-sectional view of a coating film application simultaneous trimming type showing an embodiment of the present invention.
【図２】本発明の実施例を示す、電熱体の固定保持部の
縦断面図である。FIG. 2 is a vertical cross-sectional view of a fixed holding portion of an electric heating body showing an embodiment of the present invention.
【図３】本発明の他の実施例を示す、電熱体の固定保持
部の縦断面図である。FIG. 3 is a vertical cross-sectional view of a fixed holding portion of an electric heating body showing another embodiment of the present invention.
【図４】本発明の他の実施例を示す、電熱体の固定保持
部の縦断面図である。FIG. 4 is a vertical cross-sectional view of a fixed holding portion of an electric heating body showing another embodiment of the present invention.
【図５】従来の技術例を示す、電熱体の固定保持部の縦
断面図である。FIG. 5 is a vertical cross-sectional view of a fixed holding portion of an electric heating body showing a conventional technique example.
Ｓ 成形品 Ｒ 被膜 ５ 電熱体 １１ 耐熱材 １２ 固定金具 １３ 絶縁材 １４ 掘り込み S Molded product R Coating 5 Electric heating element 11 Heat resistant material 12 Fixing metal fitting 13 Insulation material 14 Dug
Claims (4)
該成形品受型２の表面外周部に非通電性の耐熱材１１を
敷設し、該耐熱材１１上面にトリミングの形状に電熱体
５を敷設した被膜貼着同時トリミング型の電熱体取付構
造であって、該耐熱材１１に上下に貫通する掘り込み１
４を設け、該掘り込み１４部位にて固定金具１２で電熱
体５を該耐熱材１１に非接触状態にして固定保持したこ
とを特徴とする被膜貼着同時トリミング型の電熱体取付
構造。1. A molded product receiving mold 2 is formed on an upper portion of a frame body 1,
A non-conducting heat-resistant material 11 is laid on the outer peripheral portion of the surface of the molded product receiving mold 2, and an electric heating element 5 is laid on the upper surface of the heat-resistant material 11 in a trimming shape. Digging 1 that penetrates the heat-resistant material 11 vertically
4 is provided, and the electric heating element 5 is fixedly held in the non-contact state with the heat-resistant material 11 by the fixing metal fitting 12 at the dug-up 14 portion, the coating attachment simultaneous trimming type electric heating element attachment structure.
の長手方向に対応する開口寸法が、前記電熱体５の横幅
寸法に対し二倍以上の開口寸法になっている請求項１記
載の被膜貼着同時トリミング型の電熱体取付構造。2. The electric heating element 5 in the dug 14
2. The simultaneous heating and coating type electrical heating element mounting structure according to claim 1, wherein an opening dimension corresponding to the longitudinal direction of the heating element is twice or more the lateral dimension of the heating element 5.
形である請求項１または２記載の被膜貼着同時トリミン
グ型の電熱体取付構造。3. An electric heating element mounting structure according to claim 1, wherein the dug-out 14 has a circular shape in a top view.
いて上部の開口寸法に対し下部の開口寸法が小さい請求
項１、２または３記載の被膜貼着同時トリミング型の電
熱体取付構造。4. The electric heating element mounting structure according to claim 1, 2 or 3, wherein the dug-down shape has a lower opening size smaller than an upper opening size in a side view.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21256295A JP3139609B2 (en) | 1995-07-28 | 1995-07-28 | Trimming type electric heater mounting structure with simultaneous adhesion of coating |
| EP96112009A EP0755771A1 (en) | 1995-07-28 | 1996-07-25 | Electrically heatable severing element attached to a mold in order to trim a film |
| US08/688,205 US5656306A (en) | 1995-07-28 | 1996-07-26 | Structure of electrically heatable body attached to a mold that glues and trims a film |
| CN96112124A CN1148539A (en) | 1995-07-28 | 1996-07-26 | Electric heating body structure on mould of binding and finishing thin film |
| KR1019960030918A KR970005589A (en) | 1995-07-28 | 1996-07-29 | An electrically heated body attached to a mold to bond and clean the film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21256295A JP3139609B2 (en) | 1995-07-28 | 1995-07-28 | Trimming type electric heater mounting structure with simultaneous adhesion of coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0939085A true JPH0939085A (en) | 1997-02-10 |
| JP3139609B2 JP3139609B2 (en) | 2001-03-05 |
Family
ID=16624761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21256295A Expired - Fee Related JP3139609B2 (en) | 1995-07-28 | 1995-07-28 | Trimming type electric heater mounting structure with simultaneous adhesion of coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3139609B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013071271A (en) * | 2011-09-27 | 2013-04-22 | Toyoda Gosei Co Ltd | Excessive film trimming method for film decorative molding, and apparatus for the same |
-
1995
- 1995-07-28 JP JP21256295A patent/JP3139609B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013071271A (en) * | 2011-09-27 | 2013-04-22 | Toyoda Gosei Co Ltd | Excessive film trimming method for film decorative molding, and apparatus for the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3139609B2 (en) | 2001-03-05 |
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