JPH0448323B2 - - Google Patents
Info
- Publication number
- JPH0448323B2 JPH0448323B2 JP61310392A JP31039286A JPH0448323B2 JP H0448323 B2 JPH0448323 B2 JP H0448323B2 JP 61310392 A JP61310392 A JP 61310392A JP 31039286 A JP31039286 A JP 31039286A JP H0448323 B2 JPH0448323 B2 JP H0448323B2
- Authority
- JP
- Japan
- Prior art keywords
- product
- mold
- molded
- main
- shape
- 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 - Lifetime
Links
- 239000000463 material Substances 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 11
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 9
- 235000011613 Pinus brutia Nutrition 0.000 claims description 9
- 241000018646 Pinus brutia Species 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000002023 wood Substances 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は表面に凹凸のある自動車内装用成形基
板の成形法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for forming a molded substrate for automobile interiors having an uneven surface.
（従来の技術）
自動車内装用成形基板は意匠上あるいは他部品
との組合せの関係上、表面に凹凸のある形状のも
のが要求される。ところで、この種自動車内装用
成形基板としては、木質チツプに熱硬化性樹脂を
配合した繊維質マツト材をホツトプレスして成形
されている。(Prior Art) Molded substrates for automobile interiors are required to have an uneven surface due to design or combination with other parts. By the way, this type of molded substrate for automobile interiors is molded by hot pressing a fibrous pine material made of wood chips mixed with a thermosetting resin.
（発明が解決しようとする課題）
ところが、上記のような木質チツプを構成材と
して使用している自動車内装用成形基板は、成形
時に流動性が少なく、鋭いコーナ部分ではその稜
線部分の両側にマツト素材がズレてこの部分が肉
薄となる。そこで、肉厚が均一な製品を製作する
ため、角の稜線部分に同質の補助パツト材を当て
がつて肉厚が薄くならないようにして成形してい
るが、その作業は手数を要し、製品コストが高く
なるうえに作業者の安全性にも問題がある。(Problem to be Solved by the Invention) However, molded substrates for automobile interiors that use the above-mentioned wood chips as a constituent material have low fluidity during molding, and at sharp corners, mats are formed on both sides of the ridgeline. The material will shift and this part will become thin. Therefore, in order to manufacture a product with uniform wall thickness, we apply auxiliary part material of the same quality to the corner ridgeline to prevent the wall thickness from becoming thinner, but this process is time-consuming and the product Not only does this increase costs, but it also poses safety concerns for workers.
（課題を解決するための手段）
本発明は前記のような問題点を解決し、凹凸コ
ーナ部が肉薄化されることなく繊維質マツト材よ
り自動車内装用成形基板を容易に量産できるよう
にしたもので、繊維質マツト材をホツトプレスし
て凹凸のある成形基板を成形する自動車内装用成
形基板の成形法において、製品の凹凸のうち縦面
に続く横面の少なくともコーナ部に近い部分がそ
の他の部分よりも量的に余裕をもたせた形状とな
るように繊維質マツト材を製品形状に近い形状の
予備成形品に一旦成形後本成形することを特徴と
するものである。(Means for Solving the Problems) The present invention solves the above-mentioned problems and makes it possible to easily mass-produce molded substrates for automobile interiors from fibrous pine material without thinning the uneven corners. In the molding method for automotive interior molded substrates in which a fibrous pine material is hot-pressed to form a molded substrate with unevenness, at least the parts near the corners of the horizontal surface following the vertical surface of the unevenness of the product are This method is characterized in that the fibrous pine material is first formed into a preformed product with a shape close to the product shape so that it has a shape with more volume than the other parts, and then the final molding is performed.
本発明において製品の凹凸のうち縦面に続く横
面の少なくともコーナ部に近い部分がその他の部
分よりも量的に余裕をもたせた形状となるように
繊維質マツト材を製品形状に近い形状の予備成形
するには、凹凸のうち縦面に続く横面の少なくと
もコーナー部に近い部分にたるみができるように
予備成形しても或いはこの部分を他の部分より肉
厚となるよう予備成形してもよい。 In the present invention, the fibrous pine material is shaped into a shape close to the shape of the product so that at least the portions near the corners of the horizontal surface following the vertical surface of the unevenness of the product have a larger volume than the other portions. In order to preform, it is possible to preform so that there is slack in at least a portion near the corner of the horizontal surface that follows the vertical surface among the irregularities, or to preform so that this portion is thicker than other portions. Good too.
（実施例）
次に、本発明を図面を参考にしながら詳細に説
明する。(Example) Next, the present invention will be described in detail with reference to the drawings.
第１図〜第７図において、１は予備成形用上型
２と予備成形用下型３とよりなる予備成形型、１
１は本成形用上型１２と本成形用下型１３とより
なる本成形型の各一部である。第１図〜第３図に
示す第１の実施例では予備成形型１には予備成形
用上型２の凹型部４の上底部一側に凹段部５が成
形される一方、予備成形用下型３には前記凹段部
５に対応する凸段部６が形成されている。そして
この予備成形型１の型面間に木質チツプに熱硬化
性樹脂を配合した繊維質マツト材を介在させてホ
ツトプレスすることにより凹凸のうち縦面に続く
横面のコーナ部に近い一側方にその他の部分より
も量的に余裕をもたせた部分のある予備成形品７
を予備成形する。すなわち、本成形型１１の型面
長さより若干膨出部８の膨出分だけ長くすること
により量的に余裕をもたせてある。そしてこの予
備成形品７は前記本成形型１１に移され、常法に
よりホツトプレスすると製品の鋭いコーナ部分を
成形する型エツジ１５，１６に挟まれても前記余
裕部分の移行によつてコーナ部分が他の部分より
肉薄化されることなく製品１７が本成形される。
一方、第４図、第６図に示す第２の実施例および
第５図、第７図に示す第３の実施例では予備成形
型１の型合せ時における両型面間のクリアランス
をコーナ部に続く縦面間C1に比べ横面間C2が広
くなるようにして厚みで横面のうち少なくともコ
ーナ部に近い部分が他の部分即ち縦面に比べて量
的に余裕をもたせている。なお、前記第２および
第３の実施例として図示した部分を組み合せて設
計した型を用いて第８図に示すような肉厚2.5mm
の自動車ドア用成形基板を肉厚20mmの繊維質マツ
ト材から成形する場合、予備成形型１を型温150
〜180℃として肉薄部が４mm、肉厚部が６mmとな
るよう予備成形し、その後型温200℃の本成形型
１１で本成形を行つたところ、鋭いコーナ部分を
有するにも拘らず全体が略均一厚みで成形され
た。 1 to 7, 1 is a preforming mold consisting of an upper preforming mold 2 and a lower preforming mold 3;
Reference numeral 1 denotes each part of the main mold consisting of an upper mold 12 for main molding and a lower mold 13 for main molding. In the first embodiment shown in FIGS. 1 to 3, the preforming mold 1 has a recessed step 5 formed on one side of the upper bottom part of the recessed part 4 of the upper mold 2 for preforming. The lower die 3 is formed with a convex step portion 6 corresponding to the recessed step portion 5 . Then, a fibrous pine material made of wood chips mixed with a thermosetting resin is interposed between the mold surfaces of this preforming mold 1, and hot pressing is performed to form the uneven surface on one side near the corner of the horizontal surface following the vertical surface. Preformed product 7 with a part that has a larger margin than other parts
Preform. That is, by making the mold surface length of the main mold 11 slightly longer by the amount of the bulge of the bulge 8, a margin is provided in terms of quantity. Then, this preformed product 7 is transferred to the main mold 11, and when it is hot-pressed by a conventional method, even if it is sandwiched between the mold edges 15 and 16 that form the sharp corners of the product, the corner portion is The product 17 is fully formed without being made thinner than other parts.
On the other hand, in the second embodiment shown in FIGS. 4 and 6 and the third embodiment shown in FIGS. The distance between the horizontal surfaces C 2 is made wider than the distance between the vertical surfaces C 1 following the horizontal surfaces, so that at least the portions of the horizontal surfaces near the corners have a quantitative margin compared to other portions, that is, the vertical surfaces. . In addition, using a mold designed by combining the parts illustrated in the second and third embodiments, a wall thickness of 2.5 mm as shown in FIG.
When molding a molded substrate for automobile doors from fibrous pine material with a wall thickness of 20 mm, the preforming mold 1 is heated to a mold temperature of 150°C.
Preforming was carried out at ~180°C so that the thin part was 4 mm and the thick part was 6 mm, and then the main molding was performed using the main mold 11 with a mold temperature of 200°C. Despite having sharp corners, the overall shape was Molded with approximately uniform thickness.
（発明の効果）
本発明は前記説明から明らかなように、鋭いコ
ーナ部を有する自動車内装用成形基板を部分的に
肉薄化されることなく容易に成形でき、補助パツ
ド材をコーナ相当部分に当てがつて成形する場合
に比べ作業性、安全性および製造コストの面で優
れているばかりか製品の各部の密度が補助パツド
材を使用する場合に比べ均一化されるために良質
の製品を提供できる利点もあり、従来のこの種自
動車内装用成形基板の成形法の問題点を解決した
ものとして業界の発展に寄与するところ大きなも
のがある。(Effects of the Invention) As is clear from the above description, the present invention allows molded substrates for automobile interiors having sharp corners to be easily molded without being partially thinned, and auxiliary pad material is applied to the portions corresponding to the corners. Not only is it superior in terms of workability, safety, and manufacturing cost compared to molding using auxiliary padding, but it can also provide high-quality products because the density of each part of the product is more uniform than when using auxiliary pad material. It has many advantages, and it greatly contributes to the development of the industry as it solves the problems of the conventional molding method for molded substrates for automotive interiors.
第１図は本発明の第１の実施例に用いる予備成
形型の要部の断面図、第２図、第３図は同じく本
成形型による本成形工程を示す要部の断面図、第
４図および第５図は本発明の第２および第３の実
施例に用いる予備成形型の要部の断面図、第６図
および第７図は同じく本成形型の要部の断面図、
第８図は本発明により得られた製品の一例を示す
一部切欠斜視図である。
FIG. 1 is a sectional view of the main part of the preforming mold used in the first embodiment of the present invention, FIGS. 2 and 3 are sectional views of the main part showing the main forming process using the main mold, and FIG. 5 and 5 are sectional views of the main parts of the preforming mold used in the second and third embodiments of the present invention, and FIGS. 6 and 7 are sectional views of the main parts of the main mold,
FIG. 8 is a partially cutaway perspective view showing an example of a product obtained by the present invention.
Claims (1)
る成形基板を成形する自動車内装用成形基板の成
形法において、製品の凹凸のうち縦面に続く横面
の少なくともコーナ部に近い部分がその他の部分
よりも量的に余裕をもたせた形状となるように繊
維質マツト材を製品形状に近い形状の予備成形品
に一旦成形後本成形することを特徴とする自動車
内装用成形基板の成形法。1. In a molding method for molded substrates for automobile interiors in which a fibrous pine material is hot-pressed to form a molded board with unevenness, at least the parts near the corners of the horizontal surface following the vertical surface of the product's unevenness are more difficult than other parts. A method for forming a molded substrate for an automobile interior, which is characterized in that fibrous pine material is first formed into a preformed product having a shape close to the product shape, and then the final molding is performed so that the shape has a sufficient amount of space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31039286A JPS63160801A (en) | 1986-12-25 | 1986-12-25 | Method of molding automobile interior molding substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31039286A JPS63160801A (en) | 1986-12-25 | 1986-12-25 | Method of molding automobile interior molding substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63160801A JPS63160801A (en) | 1988-07-04 |
| JPH0448323B2 true JPH0448323B2 (en) | 1992-08-06 |
Family
ID=18004706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31039286A Granted JPS63160801A (en) | 1986-12-25 | 1986-12-25 | Method of molding automobile interior molding substrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63160801A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5211819B2 (en) * | 2008-04-14 | 2013-06-12 | トヨタ紡織株式会社 | Method for producing vegetable fiber molded body |
| JP5211831B2 (en) * | 2008-04-25 | 2013-06-12 | トヨタ紡織株式会社 | Method for producing vegetable fiber molded body |
| JP5182219B2 (en) * | 2009-05-21 | 2013-04-17 | トヨタ紡織株式会社 | Substrate molding apparatus and substrate manufacturing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58224735A (en) * | 1982-06-24 | 1983-12-27 | Mitsui Mokuzai Kogyo Kk | Metal mold for deep contraction |
-
1986
- 1986-12-25 JP JP31039286A patent/JPS63160801A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58224735A (en) * | 1982-06-24 | 1983-12-27 | Mitsui Mokuzai Kogyo Kk | Metal mold for deep contraction |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63160801A (en) | 1988-07-04 |
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