JP3139609B2 - Trimming type electric heater mounting structure with simultaneous adhesion of coating - Google Patents
Trimming type electric heater mounting structure with simultaneous adhesion of coatingInfo
- Publication number
- JP3139609B2 JP3139609B2 JP21256295A JP21256295A JP3139609B2 JP 3139609 B2 JP3139609 B2 JP 3139609B2 JP 21256295 A JP21256295 A JP 21256295A JP 21256295 A JP21256295 A JP 21256295A JP 3139609 B2 JP3139609 B2 JP 3139609B2
- Authority
- JP
- Japan
- Prior art keywords
- electric heating
- heating element
- heat
- resistant material
- coating
- 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 - Fee Related
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)
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 coating adhering and trimming mold having a function of adhering a coating on the surface of a molded article by vacuum forming and, at the same time, fusing a trimming line of the coating. More specifically, the present invention relates to a mounting structure for fixing and holding an electric heating element as 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 interior parts of automobiles are subjected to vacuum molding so that plastic sheets or films can be formed on the surface of the molded article by vacuum molding in order to prevent foamed resin to be applied in a decoration or a post-process. Adhere a coating such as Further, in order to remove unnecessary portions of the coating such as the outer peripheral portion from the molded product to which the coating is adhered, a method of fusing the trimming line of the coating with an electric heater fixedly held in a mold has been adopted. The fixing of the electric heating element to the mold is performed in order to prevent the electric heating element from repeatedly expanding and contracting under the influence of heat and causing deformation and displacement. The fixing method is shown in FIG. As shown in the figure, on the upper surface of a non-conductive heat-resistant material 11 such as Teflon or brick installed on the upper surface of the molded product receiving mold,
It is a usual method to fix and hold the electric heating element 5 with an inverted U-shaped fixing bracket 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 a current is applied to the electric heating element 5 to blow the coating, the temperature of the electric heating element 5 at the portion fixed and held by the fixing bracket 12 is lower than at other portions, and However, there is a problem that the film cannot be melted and blown at the damaged portion. It is considered that the above-mentioned problem occurs because the heat of the electric heating element 5 is removed by the heat-resistant material 11 and the fixing metal 12 at the fixing portion of the electric-heat material 5 and the heat-resistant material 11 and the temperature does not rise. The present invention has been made in order to solve the above-mentioned problem, and has as its object to eliminate the temperature drop at the fixing portion of the electric heating element and reliably perform the fusing of the coating.
【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-mentioned object, the present invention provides an electric heating element mounting structure of a coating and simultaneous trimming type in which a molded article receiving die is formed on an upper portion of a frame, and the molded article receiving mold is formed. A non-conductive heat-resistant material is laid on the outer periphery of the surface of the heat-resistant material, and an electric heating element is laid on the upper surface of the heat-resistant material in a trimmed shape. It is characterized in that a digging penetrating is provided, and the electric heating element is fixedly held in a non-contact state with the heat-resistant material by a fixing bracket at the digging portion. It is preferable that an opening dimension corresponding to a longitudinal direction of the electric heating element in the digging is at least twice as large as a lateral width dimension of the electric heating element. Further, it is preferable that the dug shape is circular in a top view. Further, it is preferable that the digging shape is such that a lower opening dimension is smaller than an upper opening dimension 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。Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a cross-sectional structure of a simultaneous trimming type of coating film. In the upper part of the box-shaped frame 1, a molded product receiving die 2 is provided.
Are formed. A hollow chamber 3 is defined inside, and is connected to a suction source through a path (not shown). The molded product receiving die 2 is provided with a plurality of suction holes 4 penetrating vertically. An electric heating element 5 having an annular shape similar to the outer periphery of the molded product S is held on a heat-resistant material at a peripheral edge of the upper surface of the receiving die 2 by a fixing bracket. Reference numeral 7 denotes a clamp device for holding the coating R. The electric heating element 5 is a substance which is heated to a temperature at which the coating R can be blown off by energizing, and is generally a nickel-chromium alloy, an iron-
It is a wire or strip made of a chromium alloy or a nickel-chromium-iron alloy. In particular, a round wire having a diameter of about 1 mm to about 5 mm is advantageous in view of the layability, the degree of freedom in shape formation, and the like. The molded article S is obtained by press-molding wood fiber,
A suction hole is provided by molding PP or ABS resin, and both 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。An actual working process using the above-described coating and simultaneous trimming type will be described. First, the molded product S is placed on the receiving die 2. An adhesive is applied to the surface of the molded product S in advance. The coating R is held by the clamp frame 7 and softened by heating with 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, a vacuum is applied to the surface of the molded article S by applying suction to the receiving mold 2 and the coating R is vacuum-adhered 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 blown. Finally, after the suction and the power are turned off, the product and unnecessary portions of the film 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 a fixing portion of the electric heating element 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 passes through a dug 14 provided in the heat-resistant material 11 by a fixing bracket 12 made of a wire, and is fixed by towing. That is, the electric heating element 5 is fixed and held in a non-contact state with respect to the heat-resistant material 11. Various experiments were carried out on the size of the dug 14, but the effect was obtained by making the opening size corresponding to the longitudinal direction of the electric heating element 5 in the dug 14 at least twice the width of the electric heating element 5. It turned out to be remarkable. In addition, the method of manufacturing the dug 14 is the easiest and most accurate method of drilling the heat-resistant material 11 with a drill. For the reasons described above, a round wire is used for the electric heating element, and the dug-out is a circular shape made by drilling. It can be said that this is an 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 bracket 12 is preferably a material such as stainless steel which does not deteriorate even at high temperatures. The same material as the electric heating element 5 may be used. Further, the work of construction is easy if the wire has a round cross section. 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 fitting 12, but in the present embodiment, the following configuration is adopted. FIG. 2 shows a structure in which the fixing bracket 12 is bent at the center, the electric heating element 5 is sandwiched and held, and both ends are passed through the digging 14 of the heat-resistant material 11 and bent at the back surface of the heat-resistant material 11. The bent tip is sandwiched and fixed between the heat-resistant material 11 and the insulating material 13. 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 distal end of the fixture 12 can be accommodated, displacement of the fixture 12 hardly occurs after construction. Further, the fixing bracket 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 in which both bent front ends of the fixing bracket 12 are fixed to 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 fixture 12 from the outside of the mold, the positioning of the electric heating element 5 is easy.
At this time, as shown in FIG. 4, if the shape of the dug 14 is smaller in the lower opening than 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 clear from the above description, the coating and simultaneous trimming type electric heater mounting structure according to the present invention is provided with a digging in the heat-resistant material of the receiving mold, and the electric heater is heat-resistant by the fixing bracket at the portion. The structure is fixed and held in a non-contact state with the material, so there is no temperature drop at the fixing part of the electric heating element due to the fact that the electric heating element and the heat-resistant material are not in direct contact with each other at the fixing part. Can be performed.
【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 simultaneous trimming type film sticking, 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 longitudinal 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 fixing and 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 section of an electric heating element, showing a conventional example of technology.
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 bracket 13 Insulation material 14 Digging
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 article receiving mold 2 is formed on an upper portion of a frame body 1,
A non-conductive heat-resistant material 11 is laid on the outer peripheral portion of the surface of the molded article receiving die 2, and an electric heating element 5 is laid on the upper surface of the heat-resistant material 11 in a trimmed shape. Dug 1 that penetrates the heat resistant material 11 up and down
4. An electric heating element mounting structure of simultaneous coating and trimming type wherein the electric heating element 5 is fixed to and held in a non-contact state with the heat-resistant material 11 by a fixing bracket 12 at the dug-out 14 portion.
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 dugout 14
2. The electric heating element mounting structure according to claim 1, wherein an opening dimension corresponding to a longitudinal direction of the electric heating element 5 is twice or more as large as a lateral width dimension of the electric heating element 5. 3.
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. The mounting structure according to claim 1, wherein the shape of the dug-out is circular 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 of claim 1, 2 or 3, wherein the shape of the dugout 14 is such that a lower opening dimension is smaller than an upper opening dimension 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 JPH0939085A (en) | 1997-02-10 |
| JP3139609B2 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5691970B2 (en) * | 2011-09-27 | 2015-04-01 | 豊田合成株式会社 | Method and apparatus for trimming surplus film of decorative film molded product |
-
1995
- 1995-07-28 JP JP21256295A patent/JP3139609B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0939085A (en) | 1997-02-10 |
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