JPH0665474B2 - Molding manufacturing method - Google Patents
Molding manufacturing methodInfo
- Publication number
- JPH0665474B2 JPH0665474B2 JP62333344A JP33334487A JPH0665474B2 JP H0665474 B2 JPH0665474 B2 JP H0665474B2 JP 62333344 A JP62333344 A JP 62333344A JP 33334487 A JP33334487 A JP 33334487A JP H0665474 B2 JPH0665474 B2 JP H0665474B2
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- cut
- cutting blade
- synthetic resin
- molded product
- 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
- 238000000465 moulding Methods 0.000 title claims description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000005520 cutting process Methods 0.000 claims description 60
- 239000000047 product Substances 0.000 claims description 33
- 229920003002 synthetic resin Polymers 0.000 claims description 21
- 239000000057 synthetic resin Substances 0.000 claims description 21
- 229920005989 resin Polymers 0.000 claims description 18
- 239000011347 resin Substances 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000011162 core material Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 6
- 239000007924 injection Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Landscapes
- Details Of Cutting Devices (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は合成樹脂成形品の一部を切除してモールディ
ングを製造する方法に関するものである。TECHNICAL FIELD The present invention relates to a method for producing a molding by cutting a part of a synthetic resin molded product.
車両用の合成樹脂モールディングの製造方法として、合
成樹脂の押出成形品や射出成形品などの合成樹脂成形品
をせん断してモールディングを製造する方法がある。と
ころが合成樹脂成形品をせん断すると、せん断端面が露
出して装飾性を害するとともに、エッジが危険であるた
め、せん断部にエンドキャップを形成するなどの端末処
理を行う必要がある。As a method of manufacturing a synthetic resin molding for a vehicle, there is a method of shearing a synthetic resin molded product such as a synthetic resin extruded product or an injection molded product to manufacture the molding. However, when the synthetic resin molded product is sheared, the sheared end face is exposed and the decorative property is impaired, and the edge is dangerous. Therefore, it is necessary to perform end treatment such as forming an end cap on the sheared portion.
このような点を改善するために、冷却した合成樹脂成形
品を、高周波電圧を印加した切断刃により溶断する方法
が提案されている（例えば特開昭54−11977号）。In order to improve such a point, a method has been proposed in which a cooled synthetic resin molded product is fused by a cutting blade to which a high frequency voltage is applied (for example, Japanese Patent Laid-Open No. 54-11977).
しかしながら、このような従来の方法では、切断刃に高
周波電圧を印加しているため、切断刃と接する部分の樹
脂が溶融して、他の部分とは異なった外観を有する溶断
端面が形成されるとともに、溶融部分に切断刃が接する
ために、溶断端面が乱れて装飾性を害するという問題点
があった。However, in such a conventional method, since a high frequency voltage is applied to the cutting blade, the resin in the portion in contact with the cutting blade is melted and a fusing end surface having an appearance different from that of the other portions is formed. At the same time, there is a problem that the fusing end face is disturbed and the decorativeness is impaired because the cutting blade contacts the molten portion.
この発明の目的は、上記問題点を解決するため、せん断
や溶断とは異なる原理の切断によって成形品の一部を切
除することにより、他の部分と連続した外観を有する曲
面状の端部が形成され、かつ切断面が目立たず、優れた
装飾性を有するように切断することが可能なモールディ
ングの製造方法を提案することである。In order to solve the above problems, the object of the present invention is to cut off a part of a molded product by cutting with a principle different from shearing and fusing, so that a curved end having a continuous appearance with other parts is formed. It is an object of the present invention to propose a method for producing a molding that is formed and has a cut surface that is inconspicuous and that can be cut so as to have excellent decorativeness.
この発明は、熱可塑性合成樹脂から最終製品形状よりも
大きい形状で、かつ外表面に装飾フィルムを有する成形
品を得、この成形品の切断部にほぼ沿った部分を、その
部分以外の部分よりも高温でかつ常温より高い温度に加
熱して内部を軟化させ、外表面部は内部よりも硬度が高
くなるように加熱した状態で、切断刃を外表面側から前
進させて、装飾フィルムを含む外表面を切断または破断
することなく引伸し、内部の樹脂を周辺部に移動させ
て、曲面状の端部を形成し、外表面部と裏面部を溶着さ
せた状態で切断することにより、成形品の一部を切除す
るようにしたモールディングの製造方法である。This invention obtains a molded article having a shape larger than the final product shape and having a decorative film on the outer surface from a thermoplastic synthetic resin, and a portion substantially along the cut portion of this molded article is formed from a portion other than that portion. Is heated to a temperature higher than room temperature and higher than room temperature to soften the inside, and the outer surface part is heated so that the hardness is higher than the inside, and the cutting blade is advanced from the outer surface side to include the decorative film. A molded product is obtained by stretching the outer surface without cutting or breaking, moving the resin inside to the peripheral portion, forming a curved end, and cutting the outer surface portion and the back surface portion in a welded state. Is a method of manufacturing a molding in which a part of the is removed.
この発明において合成樹脂としては、スチレン樹脂、塩
化ビニル樹脂、ポリオレフィン樹脂などの熱可塑性樹脂
等が使用できる。また合成樹脂成形品としては、押出成
形品、射出成形品などがあげられる。このような成形品
は、最終製品形状よりも大きい形状で、かつ外表面に装
飾フィルムを有するように成形する。装飾フィルムとし
ては着色樹脂フィルム、金属箔などがあげられる。In the present invention, as the synthetic resin, a thermoplastic resin such as styrene resin, vinyl chloride resin or polyolefin resin can be used. Examples of synthetic resin molded products include extrusion molded products and injection molded products. Such a molded product is molded to have a shape larger than the final product shape and to have a decorative film on the outer surface. Examples of the decorative film include a colored resin film and a metal foil.
合成樹脂成形品の加熱は、切断部にほぼ沿った狭い領域
を、その部分以外の部分よりも高温で、かつ常温より高
い温度に加熱して内部を軟化させる。このとき合成樹脂
成形品の外表面が常温の空気等により冷却される状態
で、高周波誘電加熱により切断部を全体加熱する方法が
好ましいが、オーブン、遠赤外線等により加熱してもよ
い。切断刃は加熱する必要はなく、むしろ一定温度に保
つように冷却した方がよい。切断刃の前進速度は、装飾
フィルムを含む合成樹脂成形品の外表面部が途中で切断
または破断されないで引伸ばされ、内部の樹脂が周辺部
に移動して曲面状の端部が形成される程度の速度である
ことが望ましい。In heating the synthetic resin molded product, a narrow region substantially along the cut portion is heated to a temperature higher than the other portions and higher than the normal temperature to soften the inside. At this time, it is preferable to heat the entire cut portion by high frequency dielectric heating while the outer surface of the synthetic resin molded article is cooled by air at room temperature or the like, but it may be heated by an oven, far infrared rays or the like. The cutting blade does not need to be heated, but rather should be cooled so as to maintain a constant temperature. The forward speed of the cutting blade is such that the outer surface portion of the synthetic resin molded product including the decorative film is stretched without being cut or broken in the middle, and the resin inside moves to the peripheral portion to form a curved end portion. It is desirable that the speed is moderate.
この発明のモールディングの製造方法においては、外表
面に装飾フィルムを有する合成樹脂成形品を加熱して内
部を軟化させ、外表面部は内部よりも硬度が高い状態
で、切断刃を外表面側から前進させると、装飾フィルム
を含む外表面部は硬度が高いため切断刃により切断ある
いは破断されることなく押されて引伸ばされ、このため
内部の軟化状態の樹脂は周辺部に移動する。この状態で
切断刃がさらに前進すると、切断部の装飾フィルムを含
む外表面部は他の部分と連続した外観を保ったまま曲面
状に変形して、滑らかな曲面状の端部が形成され、装飾
フィルムと一体化した外表面部と裏面部が溶着した状態
で切断される。切断面は外表面部がせん断または溶断さ
れずに引伸ばされた状態で形成されていることにより、
内部の樹脂が露出しない状態で、裏面側に狭い幅で形成
されるので外表面側から目立たず、エンドキャップ等の
端末処理をしなくても、優れた外観のモールディングが
得られる。In the method of manufacturing a molding of the present invention, a synthetic resin molded article having a decorative film on the outer surface is heated to soften the inside, and the outer surface portion has a higher hardness than the inside, and the cutting blade is cut from the outer surface side. When advanced, the outer surface portion including the decorative film has a high hardness and is pushed and stretched without being cut or broken by the cutting blade, so that the softened resin inside moves to the peripheral portion. When the cutting blade further advances in this state, the outer surface portion including the decorative film of the cutting portion is deformed into a curved surface while maintaining the continuous appearance with other portions, and a smooth curved end portion is formed, The outer surface portion and the back surface portion integrated with the decorative film are cut in a welded state. The cut surface is formed by stretching the outer surface without shearing or fusing,
Since the resin on the inside is not exposed, the resin is formed on the back surface side with a narrow width so that it is inconspicuous from the outer surface side, and a molding with an excellent appearance can be obtained without end treatment such as an end cap.
以下、本発明を図面の実施例により説明する。第１図は
実施例の切断装置を示す正面図、第２図はその平面図、
第３図は切断刃の斜視図、第４図（ａ）は製造されたモ
ールディングの斜視図、（ｂ）はそのＢ−Ｂ断面図、
（ｃ）はＣ−Ｃ断面図、第５図（ａ）〜（ｄ）はそれぞ
れ切断工程を示す第４図のＡ−Ａ相当断面図、第６図
（ａ）〜（ｄ）は同じく切断工程を示す第４図のＣ−Ｃ
相当断面図である。Hereinafter, the present invention will be described with reference to the embodiments of the drawings. FIG. 1 is a front view showing a cutting device of an embodiment, FIG. 2 is a plan view thereof,
3 is a perspective view of a cutting blade, FIG. 4 (a) is a perspective view of a manufactured molding, and (b) is a sectional view taken along line BB thereof.
(C) is a C-C sectional view, FIGS. 5 (a) to (d) are sectional views corresponding to AA of FIG. 4 showing a cutting step, respectively, and FIGS. 6 (a) to (d) are the same. CC of FIG. 4 showing the process
It is an equivalent sectional view.
図において、１は切断装置で、合成樹脂成形品２を載置
するFRP製の受台３、セラミック製のダイス４、銅製の
アース電極５およびセラミック製の受台６を有する。受
台3,6に対向してクランプ7,8が配置され、それぞれ流体
圧シリンダ9,10により往復動可能とされている。ダイス
４とアース電極５の間に形成された間隔11に対向して切
断刃12が設けられ、流体圧シリンダ13により往復動して
ダイスとの間で成形品２を切断するようになっている。
切断刃12はセラミック、非磁性金属にセラミックを蒸着
した材料などからなり、成形品２の切除部14側にテーパ
面12aを有し、刃先はあまり鋭利にされていないが、そ
の先端は平滑にされているのが好ましい。また切断刃12
は成形品２の切断形状に形成されている。In the figure, reference numeral 1 is a cutting device, which has a pedestal 3 made of FRP on which a synthetic resin molded product 2 is placed, a die 4 made of ceramics, a ground electrode 5 made of copper, and a pedestal 6 made of ceramics. Clamps 7 and 8 are arranged to face the receiving bases 3 and 6, respectively, and can be reciprocated by fluid pressure cylinders 9 and 10, respectively. A cutting blade 12 is provided so as to face a gap 11 formed between the die 4 and the ground electrode 5, and reciprocates by a fluid pressure cylinder 13 to cut the molded product 2 between the die and the die. .
The cutting blade 12 is made of ceramic, a material obtained by vapor-depositing ceramic on a non-magnetic metal, or the like, and has a tapered surface 12a on the side of the cut-off portion 14 of the molded product 2. Although the cutting edge is not very sharp, its tip is smooth. Preferably. Also cutting blade 12
Is formed in a cut shape of the molded product 2.
切断刃12のダイス４側の上部には銅製の高周波電極15が
設けられて高周波電源16に接続され、アース電極５との
間に高周波電圧を印加して、成形品２の切断部17付近を
高周波誘電加熱するようになっている。切断刃12および
高周波電極15は第３図のような形状で重ねて配置され、
切断刃12は高周波電極15に沿って往復動するようになっ
ており、ダイス４および間隙11もこれに対応した形状と
なっている。アース電極５はアース18に接続され、受台
６は流体圧シリンダ19に連続されている。20はサイドガ
イド、21はストッパである。22は製造されたモールディ
ング、23は端部、24は切断面である。A high-frequency electrode 15 made of copper is provided on the upper part of the cutting blade 12 on the side of the die 4 and is connected to a high-frequency power source 16, and a high-frequency voltage is applied between the high-frequency electrode 16 and the ground electrode 5 so that the vicinity of the cutting part 17 of the molded product 2 is It is designed for high frequency induction heating. The cutting blade 12 and the high frequency electrode 15 are arranged so as to overlap each other in a shape as shown in FIG.
The cutting blade 12 is adapted to reciprocate along the high frequency electrode 15, and the die 4 and the gap 11 also have shapes corresponding thereto. The earth electrode 5 is connected to the earth 18, and the pedestal 6 is connected to the fluid pressure cylinder 19. 20 is a side guide and 21 is a stopper. 22 is a manufactured molding, 23 is an end portion, and 24 is a cut surface.
モールディング22の製造方法は、合成樹脂の押出成形、
射出成形等により、最終製品であるモールディング22よ
りも長く、かつ外表面に着色PUCフィルム等の装飾フィ
ルム26を有するように製造された合成樹脂成形品２を第
５図および第６図の（ａ）に示すように、切断装置１に
載置し、流体圧シリンダ9,10を駆動してクランプ7,8を
前進させ、成形品２をクランプする。このとき流体圧シ
リンダ19により受台６およびストッパ21の位置決めを行
う。そして高周波電極15とアース電極５の間に高周波電
圧を印加して、高周波誘電加熱により、成形品２の切断
部17付近の樹脂を常温より高い温度に加熱する。高周波
誘電加熱により、成形品２の切断部17付近の樹脂は自己
発熱により外表面部2a、内部2bとも均等に常温以上の温
度に加熱されるが、外表面部2aは常温の空気にさらされ
て常に冷却されているため、内部2bより低温となる。そ
こで内部2bが軟化する程度に加熱すると、外表面部2aは
内部2bよりも硬度が高くなる。The molding 22 is manufactured by extrusion molding a synthetic resin,
A synthetic resin molded product 2 which is manufactured by injection molding or the like so as to be longer than the final product molding 22 and to have a decorative film 26 such as a colored PUC film on the outer surface is shown in FIGS. 5 and 6 (a). ), The fluid pressure cylinders 9 and 10 are driven to move the clamps 7 and 8 forward to clamp the molded product 2. At this time, the pedestal 6 and the stopper 21 are positioned by the fluid pressure cylinder 19. Then, a high frequency voltage is applied between the high frequency electrode 15 and the ground electrode 5 to heat the resin near the cut portion 17 of the molded product 2 to a temperature higher than room temperature by high frequency dielectric heating. Due to the high frequency dielectric heating, the resin in the vicinity of the cut portion 17 of the molded product 2 is uniformly heated to a temperature equal to or higher than room temperature by the self-heating, but the outer surface 2a is exposed to the air at room temperature. The temperature is lower than that of the inside 2b because it is constantly cooled. Then, when the inner surface 2b is heated to such an extent that it softens, the outer surface portion 2a has a higher hardness than the inner surface 2b.
この状態で流体圧シリンダ13により、第５図および第６
図の（ｂ）に示すように、切断刃12を外表面側から前進
させると、装飾フィルム26を含む外表面部2aは硬度が高
いため、第５図および第６図の（ｃ）に示すように、切
断刃12により切断あるいは破断されることなく、そのま
ま引伸ばされるように押され、内部2bの樹脂は周辺部に
移動する。このとき切断刃12の切除部14側はテーパ面12
aが形成されているため、樹脂がテーパ面12aに沿って押
出される。この状態で切断刃12がさらに前進すると、第
５図および第６図の（ｄ）に示すように、モールディン
グ22となる部分の切断部17の装飾フィルム26を含む外表
面部2aは、他の部分と連続した外観を保ったまま曲面状
に変形して、曲面状の端部23が形成された状態で切断さ
れ、第４図（ａ）ないし（ｃ）に示すようなモールディ
ング22が製造される。In this state, the fluid pressure cylinder 13 is used to
As shown in (b) of the figure, when the cutting blade 12 is advanced from the outer surface side, the outer surface portion 2a including the decorative film 26 has a high hardness, and thus the cutting blade 12 is shown in (c) of FIG. 5 and FIG. As described above, the resin in the inner portion 2b moves to the peripheral portion without being cut or broken by the cutting blade 12 and pushed so as to be stretched as it is. At this time, the cutting surface 12 of the cutting blade 12 is tapered 12
Since a is formed, the resin is extruded along the tapered surface 12a. When the cutting blade 12 is further advanced in this state, as shown in (d) of FIG. 5 and FIG. 6, the outer surface portion 2a including the decorative film 26 of the cutting portion 17 of the portion which becomes the molding 22 is The part 22 is deformed into a curved surface while maintaining a continuous appearance with the part, and is cut with the curved end 23 being formed to manufacture a molding 22 as shown in FIGS. 4 (a) to 4 (c). It
このとき装飾フィルム26はある程度の硬度を有するた
め、その変形は連続的となる。このため外表面部2aの他
の領域も連続的に変形し優れた曲面状の端部23が形成さ
れる。切断刃12によって形成される切断面24は、内部2b
の樹脂が外表面側に露出せず、外表面部2aと裏面部2cと
が接着した状態で、裏面部2c付近に形成され、外表面側
から目立たない。従ってエンドキャップ等により切断面
24を端末処理しなくても、優れた外観のモールディング
22が得られ、そのままの状態で使用可能である。At this time, since the decorative film 26 has a certain degree of hardness, its deformation is continuous. Therefore, the other regions of the outer surface portion 2a are also continuously deformed to form the excellent curved end portion 23. The cutting surface 24 formed by the cutting blade 12 has an internal 2b
The resin is not exposed to the outer surface side and is formed in the vicinity of the back surface portion 2c in a state where the outer surface portion 2a and the back surface portion 2c are adhered to each other and is inconspicuous from the outer surface side. Therefore, the cut surface can be
Excellent-looking molding, even without 24 terminal treatment
22 was obtained and can be used as it is.
第７図（ａ）は他の実施例により製造されたモールディ
ングの斜視図、（ｂ）はそのＤ−Ｄ断面図、（ｃ）はＥ
−Ｅ断面図、第８図は切断刃の斜視図、第９図は切断状
態を示す第７図（ａ）のＤ−Ｄ相当断面図、第10図
（ａ）ないし（ｃ）は切断工程を示す第９図のＦ−Ｆ相
当断面図、第11図（ａ）ないし（ｃ）は同じくＧ−Ｇ相
当断面図である。FIG. 7 (a) is a perspective view of a molding manufactured according to another embodiment, (b) is a cross-sectional view taken along the line D-D, and (c) is an E.
-E sectional view, FIG. 8 is a perspective view of a cutting blade, FIG. 9 is a sectional view corresponding to DD of FIG. 7 (a) showing a cutting state, and FIGS. 10 (a) to (c) are cutting steps. 9 is a sectional view corresponding to FF in FIG. 9, and FIGS. 11A to 11C are sectional views corresponding to GG.
この実施例では、成形品２およびモールディング22は、
内部に天然繊維、ガラス繊維シート等の芯材25および外
表面に着色PVCシート等の装飾フィルム26を有し、その
外表面部2aに対応した形状の切断刃12によって前記と同
様に切断されるが、芯材25および装飾フィルム26も外表
面部2aとともに切断刃12によって切断または破断される
ことなく、そのまま引伸ばされるように押され、最終的
に裏面部2cと接着した状態で切断され、裏面部2c付近に
切断面24が形成される。このため装飾フィルム26は端部
23においても連続し、また芯材25および装飾フィルム26
の切断面も目立たなくなる。芯材25は成形品２の樹脂と
同色または透明なものにすると、露出しても目立たない
から好ましい。In this embodiment, the molded product 2 and the molding 22 are
It has a core material 25 such as a natural fiber or a glass fiber sheet inside and a decorative film 26 such as a colored PVC sheet on the outer surface, and is cut in the same manner as above by a cutting blade 12 having a shape corresponding to the outer surface portion 2a. However, the core material 25 and the decorative film 26 are also cut or broken by the cutting blade 12 together with the outer surface portion 2a, and are pressed so as to be stretched as they are, and finally cut in a state of being adhered to the back surface portion 2c, A cut surface 24 is formed near the back surface portion 2c. For this reason, the decorative film 26 is
23, continuous, core material 25 and decorative film 26
The cut surface of is also inconspicuous. It is preferable that the core material 25 has the same color or transparent as the resin of the molded product 2 because it is not noticeable even when exposed.
なお、上記実施例において、成形品２としては押出成形
品でも射出成形品でもよく、射出成形品に適用すると、
１個の射出成形型を用いて、異なる材料の成形品を成形
するなど、寸法または成形収縮率の異なるモールディン
グを製造することができる。また間隙11はある方が好ま
しいが、必ずしもなくてもよい。さらに切断刃12の刃先
にはポリテトラフルオロエチレン樹脂等の滑性皮膜を形
成しておくのが好ましい。また切断刃12の刃先および成
形品２の外表面部2aに一定温度の冷風を吹付けて冷却す
ると、刃先の温度上昇を防止できるとともに、外表面部
2aを内部2bより確実に低温にできるので好ましい。In the above embodiment, the molded product 2 may be either an extrusion molded product or an injection molded product, and when applied to the injection molded product,
A single injection mold can be used to produce moldings of different dimensions or mold shrinkage, such as molding molded articles of different materials. The gap 11 is preferably provided, but it is not always necessary. Furthermore, it is preferable to form a lubricious coating such as polytetrafluoroethylene resin on the cutting edge of the cutting blade 12. Also, by blowing cold air at a constant temperature onto the cutting edge of the cutting blade 12 and the outer surface portion 2a of the molded product 2 to cool it, the temperature rise of the cutting edge can be prevented and the outer surface portion can be prevented.
It is preferable because the temperature of 2a can be made surely lower than that of the inside 2b.
本発明によれば、外表面に装飾フィルムを有する熱可塑
性合成樹脂成形品の切断部にほぼ沿った部分を常温を超
える温度に加熱して内部を軟化させ、装飾フィルムを含
む外表面部が内部よりも硬度が高くなるような状態で、
外表面部を切断または破断することなく引き伸ばし、内
部の樹脂を周辺部に移動させて、外表面部と裏面部を溶
着させた状態で切断するようにしたため、他の部分と連
続した外観を有する曲面状の端部が形成され、かつ切断
面が目立たず、優れた外観を有するモールディングを簡
単な操作により製造することができる。この場合、硬度
の高い外表面部に装飾フィルムが存在することにより、
装飾フィルムの変形に対応して外表面部の他の部分も変
化するため、変形が連続的となり、優れた外観を有する
曲面状の端部が形成される。According to the present invention, a portion substantially along the cut portion of the thermoplastic synthetic resin molded product having a decorative film on the outer surface is heated to a temperature above room temperature to soften the inside, and the outer surface portion including the decorative film is inside. In the state that the hardness becomes higher than
The outer surface is stretched without cutting or breaking, the resin inside is moved to the peripheral area, and the outer surface and the back surface are welded and cut, so it has a continuous appearance with other parts. It is possible to manufacture a molding having a curved end portion, a cut surface not conspicuous, and an excellent appearance by a simple operation. In this case, the presence of the decorative film on the outer surface of high hardness,
Since the other parts of the outer surface part also change in response to the deformation of the decorative film, the deformation becomes continuous and curved end portions having an excellent appearance are formed.
第１図は実施例の切断装置を示す正面図、第２図はその
平面図、第３図は切断刃の斜視図、第４図（ａ）は製造
されたモールディングの斜視図、（ｂ）はそのＢ−Ｂ断
面図、（ｃ）はＣ−Ｃ断面図、第５図（ａ）〜（ｄ）は
それぞれ切断工程を示す第４図のＡ−Ａ相当断面図、第
６図（ａ）〜（ｄ）は同じく切断工程を示す第４図のＣ
−Ｃ相当断面図、第７図（ａ）は他の実施例により製造
されたモールディングの斜視図、（ｂ）はそのＤ−Ｄ断
面図、（ｃ）はＥ−Ｅ断面図、第８図は切断刃の斜視
図、第９図は切断状態を示す第７図（ａ）のＤ−Ｄ相当
断面図、第10図（ａ）ないし（ｃ）は切断工程を示す第
９図のＦ−Ｆ相当断面図、第11図（ａ）ないし（ｃ）は
同じくＧ−Ｇ相当断面図である。 各図中、同一符号は同一または相当部分を示し、２は合
成樹脂成形品、2aは外表面部、2bは内部、2cは裏面部、
3,6は受台、５はアース電極、7,8はクランプ、12は切断
刃、14は切除部、15は高周波電極、17は切断部、22はモ
ールディング、23は端部、24は切断面、25は芯材、26は
装飾フィルムである。FIG. 1 is a front view showing a cutting apparatus of an embodiment, FIG. 2 is a plan view thereof, FIG. 3 is a perspective view of a cutting blade, FIG. 4 (a) is a perspective view of a manufactured molding, and FIG. Is a sectional view taken along line BB, (c) is a sectional view taken along line CC, and FIGS. 5 (a) to (d) are sectional views corresponding to line AA in FIG. )-(D) are C of FIG. 4 which also show a cutting process.
-C equivalent sectional view, FIG. 7 (a) is a perspective view of a molding manufactured according to another embodiment, (b) is its DD sectional view, (c) is EE sectional view, and FIG. Is a perspective view of a cutting blade, FIG. 9 is a sectional view corresponding to DD of FIG. 7 (a) showing a cutting state, and FIGS. 10 (a) to 10 (c) are F- of FIG. 9 showing a cutting process. A sectional view corresponding to F and FIGS. 11A to 11C are sectional views corresponding to G-G. In the drawings, the same reference numerals indicate the same or corresponding parts, 2 is a synthetic resin molded product, 2a is an outer surface portion, 2b is an inner portion, 2c is a back surface portion,
3, 6 is a pedestal, 5 is an earth electrode, 7 and 8 are clamps, 12 is a cutting blade, 14 is a cutting part, 15 is a high frequency electrode, 17 is a cutting part, 22 is a molding, 23 is an end part, 24 is a cutting part. The surface, 25 is a core material, and 26 is a decorative film.
Claims (3)
大きい形状で、かつ外表面に装飾フィルムを有する成形
品を得、この成形品の切断部にほぼ沿った部分を、その
部分以外の部分よりも高温でかつ常温より高い温度に加
熱して内部を軟化させ、外表面部は内部よりも硬度が高
くなるように加熱した状態で、切断刃を外表面側から前
進させて、装飾フィルムを含む外表面を切断または破断
することなく引伸し、内部の樹脂を周辺部に移動させ
て、曲面状の端部を形成し、外表面部と裏面部を溶着さ
せた状態で切断することにより、成形品の一部を切除す
るようにしたモールディングの製造方法。1. A molded article having a shape larger than the final product shape and having a decorative film on the outer surface is obtained from a thermoplastic synthetic resin, and a portion substantially along the cut portion of the molded article is a portion other than the portion. Higher than room temperature and higher than room temperature to soften the inside, and while the outer surface is heated so that the hardness is higher than the inside, the cutting blade is advanced from the outer surface side to form the decorative film. By stretching the outer surface including without cutting or breaking, moving the resin inside to the peripheral part, forming a curved end, and cutting with the outer surface part and the back surface part welded, forming A method of manufacturing a molding in which a part of the product is cut off.
る状態で高周波誘電加熱により行われるものである特許
請求の範囲第１項記載の方法。2. The method according to claim 1, wherein the heating is performed by high-frequency dielectric heating while the outer surface of the synthetic resin molded article is cooled.
である特許請求の範囲第１項または第２項記載の方法。3. The method according to claim 1 or 2, wherein the synthetic resin molded product has a core material inside.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62333344A JPH0665474B2 (en) | 1987-12-28 | 1987-12-28 | Molding manufacturing method |
| US07/289,831 US4940557A (en) | 1987-12-28 | 1988-12-27 | Method of manufacturing molding members |
| CA000587083A CA1307891C (en) | 1987-12-28 | 1988-12-28 | Method of manufacturing molding members |
| EP88312345A EP0323213B1 (en) | 1987-12-28 | 1988-12-28 | Method of manufacturing molding members |
| DE3888507T DE3888507T2 (en) | 1987-12-28 | 1988-12-28 | Process for the production of cast products. |
| AU27587/88A AU593753B2 (en) | 1987-12-28 | 1988-12-29 | Method of manufacturing molding members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62333344A JPH0665474B2 (en) | 1987-12-28 | 1987-12-28 | Molding manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01171927A JPH01171927A (en) | 1989-07-06 |
| JPH0665474B2 true JPH0665474B2 (en) | 1994-08-24 |
Family
ID=18265062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62333344A Expired - Fee Related JPH0665474B2 (en) | 1987-12-28 | 1987-12-28 | Molding manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0665474B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6186198A (en) * | 1984-10-04 | 1986-05-01 | トヨタ自動車株式会社 | Method of cutting gate section of thermoplastic resin moldedshape and cutter for gate section |
-
1987
- 1987-12-28 JP JP62333344A patent/JPH0665474B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01171927A (en) | 1989-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0323213B1 (en) | Method of manufacturing molding members | |
| US4579755A (en) | Longitudinal molding with nonuniform sections | |
| ES8308749A1 (en) | Method of deforming plastics pieces. | |
| MX171620B (en) | METHOD AND APPARATUS TO PREPARE A BODY SIDE MOLDING FOR A VEHICLE AND THE PRODUCT OBTAINED | |
| ES8308256A1 (en) | Method of and apparatus for manufacturing moulded plastics pieces or articles. | |
| JPH0665474B2 (en) | Molding manufacturing method | |
| JPH0665475B2 (en) | Molding manufacturing method | |
| JPH0665476B2 (en) | Molding manufacturing method | |
| JPH01195031A (en) | Preparation of molding | |
| JP2787701B2 (en) | Manufacturing equipment for blow molded products with flange | |
| KR100952353B1 (en) | Sun visor molding device and molding method | |
| JPH02152797A (en) | Manufacture of molding | |
| JPH01195008A (en) | Manufacture of molding | |
| JPH0448083B2 (en) | ||
| JPH0653390B2 (en) | Molding manufacturing method | |
| JPH0725065B2 (en) | Cutting device for thermoplastic synthetic resin moldings | |
| KR100313492B1 (en) | Process for marking a vehicle molding | |
| JPH066353B2 (en) | Synthetic resin molded article and manufacturing method thereof | |
| JPS58108110A (en) | Thermoplastic resin molding and manufacture thereof | |
| SU1281434A1 (en) | Mould for moulding sheet thermoplastic blanks | |
| JPH085145B2 (en) | Door molding manufacturing method | |
| JPH0592479A (en) | Infusion container manufacturing method | |
| JPH11138570A (en) | Method for correcting shape of molding | |
| JPH11105157A (en) | Processing of terminal of resin molding | |
| JPS62199413A (en) | Preparation of molding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |