JPS63154315A - Molding method of synthetic resin product with skin material - Google Patents
Molding method of synthetic resin product with skin materialInfo
- Publication number
- JPS63154315A JPS63154315A JP30224786A JP30224786A JPS63154315A JP S63154315 A JPS63154315 A JP S63154315A JP 30224786 A JP30224786 A JP 30224786A JP 30224786 A JP30224786 A JP 30224786A JP S63154315 A JPS63154315 A JP S63154315A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- cavity
- skin material
- molding
- molds
- 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.)
- Pending
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 30
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 29
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 title abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000002347 injection Methods 0.000 abstract description 8
- 239000007924 injection Substances 0.000 abstract description 8
- 238000009423 ventilation Methods 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract 1
- 230000006837 decompression Effects 0.000 abstract 1
- 210000003491 skin Anatomy 0.000 description 45
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 206010013642 Drooling Diseases 0.000 description 1
- 208000008630 Sialorrhea Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C45/14196—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being positioned around an edge of the injected part
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
(産業上の利用分野)
本発明は、たとえば自動車の内装材などとして用いる表
皮体付ぎ合成樹脂製品の成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a method for molding a synthetic resin product with a skin body used as, for example, an interior material for an automobile.
(従来の技術)
従来、表面に表皮体を一体的に設けた合成樹脂成形品を
成形する場合、たとえば、特開昭6O−2j9021号
公報に示されているように、対向した一対の成形型にお
ける一方の成形型のキャビティ形成面に表皮体を配設し
て一対の成形型を型締めし、この一対の成形型によって
形成されたキャビティ内に熱可塑性合成樹脂を射出して
、成形品の表面に表皮体を付着させ、これと同時に、成
形型に設けた切断刃によって、成形品の周囲における表
皮体の不要部分を切断除去するようにしている。(Prior Art) Conventionally, when molding a synthetic resin molded product having a skin integrally provided on its surface, a pair of opposing molds are used, for example, as shown in Japanese Patent Application Laid-Open No. 6O-2J9021. A skin body is disposed on the cavity forming surface of one of the molds to clamp the pair of molds, and a thermoplastic synthetic resin is injected into the cavity formed by the pair of molds to form the molded product. The skin is attached to the surface, and at the same time, unnecessary portions of the skin around the molded product are cut off using a cutting blade provided on the mold.
(発明が解決しようとする問題点)
上記従来の成形方法によると、表皮体の端末処理におい
ては、成形と同時に表皮体の不要部分を切断するのみで
あるので、成形後に表皮体の端末部を成形体の裏面側に
折り返して接着剤で接着する2次加工を必要とする。そ
のため、表皮体の端末部の処理に手数がかかるとともに
、折り返しがぎれいにできなかったり、はがれが生じや
すく、表皮体が布状物の場合には切断面の糸のほつれ等
が生じて仕上げが悪くなることがある。(Problems to be Solved by the Invention) According to the above-mentioned conventional molding method, in the end treatment of the skin body, unnecessary portions of the skin body are simply cut off at the same time as molding. A secondary process is required in which the molded body is folded back to the back side and bonded with adhesive. As a result, it takes time to process the ends of the skin, the folds cannot be folded neatly, and peeling tends to occur, and if the skin is cloth-like, the threads on the cut surface may become frayed, resulting in poor finishing. It can get worse.
本発明は、上述のような問題を解決しようとするもので
、成形と同時に表皮体の端末部の折り返し処理を行ない
、表皮体の端末部の処理に2次加工を必要とせず、成形
を容易かつ迅速に行なえるようにすることを目的とする
ものである。The present invention is an attempt to solve the above-mentioned problems, and involves folding back the ends of the skin at the same time as molding, eliminating the need for secondary processing to process the ends of the skin, and facilitating molding. The purpose is to make it possible to do so quickly.
(問題点を解決するための手段)
本発明は、対向した一対の成形型における一方の成形型
のキャピテイ形成面に表皮体を配設して一対の成形型を
型締めし、この一対の成形型によって形成されたキャビ
ティ内に熱可塑性合成樹脂を射出して、成形品形状の合
成樹脂の表面に上記表皮体を付着させ、この表皮体を付
着した合成樹脂が完全固化しない状態で上記一対の成形
型を所定開隔型開きし、この一対の成形型のキャビティ
内を減圧するとともに、キャビティ内に温風を送風して
、成形品形状の合成樹脂の周囲に残された表皮体の端末
部を形成品部分の裏面側に折り返し状態とし、上記一対
の成形型を再度型締めして、積層成形品を成形するもの
である。(Means for Solving the Problems) The present invention provides a skin body on the cavity forming surface of one mold in a pair of opposing molds, clamps the pair of molds, and A thermoplastic synthetic resin is injected into the cavity formed by the mold, and the skin body is attached to the surface of the synthetic resin in the shape of a molded product. The molds are opened at a predetermined distance, the pressure inside the cavities of the pair of molds is reduced, and warm air is blown into the cavities to remove the end portion of the skin body left around the synthetic resin in the shape of the molded product. is folded back to the back side of the molded product, and the pair of molds are clamped again to form a laminate molded product.
(作用)
本発明は、一方の成形型のキャビティ形成面に表皮体を
配設した状態で一対の成形型を型締めし、この一対の成
形型によるキャビティ内に熱可塑性合成樹脂を射出して
、合成樹脂の表面に表皮体を付着させる。そして、この
表皮体を付着した合成樹脂が完全固化しない状態で一対
の成形型を所定間隔型開きする。これとともに、キャビ
ティ内を減圧し、このキャビティ内の減圧を開始してか
ら所定時間後、あるいは、キャビティ内を減圧すると同
時に、キャビティ内にlff1を送風し、この送風圧に
よって、成形品形状の合成樹脂の周囲に残された表皮体
の端末部を折り返し、形成品部分の裏面側に巻込み状態
となったところで、一対の成形型を再度型締めすること
により、表皮体の端末部が成形品の裏面側に結合した積
層成形品を得る。(Function) The present invention involves clamping a pair of molds with a skin body disposed on the cavity forming surface of one of the molds, and injecting a thermoplastic synthetic resin into the cavity formed by the pair of molds. , a skin body is attached to the surface of the synthetic resin. Then, the pair of molds are opened at a predetermined interval before the synthetic resin to which the skin is attached is completely solidified. At the same time, the inside of the cavity is depressurized, and after a predetermined period of time after starting the depressurization in the cavity, or at the same time as the depressurization in the cavity, lff1 is blown into the cavity, and by this blowing pressure, the shape of the molded product is synthesized. The end portion of the skin body left around the resin is folded back, and when it is wrapped around the back side of the molded product, the pair of molds is clamped again, so that the end portion of the skin body becomes the molded product. A laminated molded product is obtained which is bonded to the back side of the laminate.
(実施例) 以下、本発明の一実施例を図面を参照して説明する。(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第1図において、1.2は互いに対向した固定側および
可動側の一対の成形型で、この一対の成形型1.2には
、対向面中央部にキャビティ3を形成する凸凹状のキャ
ビティ形成面4.5が設けられているとともに、対向面
外周部に互いに所定長さ摺動自在に嵌杏する嵌合部6,
7が設けられている。また、上記可動側の成形型2にお
ける凹状のキャビティ形成面5にキャビティ3の一部を
形成するスライド型8が進退自在に設けられている。ま
た、上記固定側の成形型1の中央に注入孔9が形成され
、この注入孔9の外端部にノズル接合部10が設けられ
ている。In Fig. 1, reference numeral 1.2 denotes a pair of molds on a fixed side and a movable side that face each other, and the pair of molds 1.2 has an uneven cavity forming a cavity 3 in the center of the opposing surface. A fitting portion 6, which is provided with a surface 4.5 and is slidably fitted to the outer periphery of the opposing surface by a predetermined length,
7 is provided. Further, a slide mold 8 that forms a part of the cavity 3 is provided on the concave cavity forming surface 5 of the movable mold 2 so as to be able to move forward and backward. Further, an injection hole 9 is formed in the center of the mold 1 on the fixed side, and a nozzle joint 10 is provided at the outer end of the injection hole 9.
上記固定側の成形型1に減圧装置11が設けられている
。この減圧装置11は、シリンダ12内にピストン13
が進退自在に嵌合され、このピストン13から突出した
ロッド14の先端に、上記キャビティ3内に出没するバ
キュームビン15が取付けられ、このバキュームビン1
5の先端にバキューム孔16が開口され、このバキュー
ム孔16は吸引路17を介してバキュームポンプ18に
接続され、かつ、上記バキュームビン15はスプリング
19により先端がキャビティ形成面4と面一になって成
形型1内に没する方向に常時付勢されている。また、上
記シリンダ12の内外端部は管路20.21により電磁
切換弁22、ポンプ23およびオイルフィルタ24を介
してオイルタンク25に接続されている。A pressure reducing device 11 is provided in the mold 1 on the fixed side. This pressure reducing device 11 has a piston 13 inside a cylinder 12.
A vacuum bottle 15 that appears and retracts into the cavity 3 is attached to the tip of a rod 14 that protrudes from the piston 13.
A vacuum hole 16 is opened at the tip of the vacuum bottle 15, and the vacuum hole 16 is connected to a vacuum pump 18 via a suction path 17.The tip of the vacuum bottle 15 is made flush with the cavity forming surface 4 by a spring 19. It is constantly biased in the direction of sinking into the mold 1. Further, the inner and outer ends of the cylinder 12 are connected to an oil tank 25 by a conduit 20.21 via an electromagnetic switching valve 22, a pump 23, and an oil filter 24.
上記可動側の成形型2の嵌合部7に複数個の温風送風装
置131が設けられている。この温風送風装置31は、
送風ケース32内にヒータ33が設けられているととも
に、送風ケース32にポンプ34が接続され、かつ、送
風ケース32にバルブ35を介して上記嵌合部7の内側
に開口した送風路36が接続されている。A plurality of hot air blowers 131 are provided in the fitting portion 7 of the mold 2 on the movable side. This hot air blower 31 is
A heater 33 is provided inside the blower case 32, a pump 34 is connected to the blower case 32, and a blower path 36 opening inside the fitting portion 7 is connected to the blower case 32 via a valve 35. has been done.
上記可動側の成形型2に上記スライド型8の駆動装置4
1が設けられている。この駆lll装置41は、シリン
ダ42内にピストン43が進退自在に嵌合され、このピ
ストン43に上記スライド型8に連結したロッド44が
突設されている。また、上記シリンダ42の内外端部は
管路45.46によりT11!切換弁47、ポンプ48
およびオイルフィルタ49を介して上記オイルタンク2
5に接続されている。A drive device 4 for the slide mold 8 is attached to the mold 2 on the movable side.
1 is provided. In this driving device 41, a piston 43 is fitted into a cylinder 42 so as to be freely movable back and forth, and a rod 44 connected to the slide mold 8 is protruded from the piston 43. Further, the inner and outer ends of the cylinder 42 are connected to T11! by pipes 45 and 46. Switching valve 47, pump 48
and the oil tank 2 via the oil filter 49.
5.
そうして、成形にあたっては、まず、第2図に示すよう
に、可動側の成形型2を後退させて固定側の成形型1と
の間を全開状態にし、固定側の成形型1のキャビティ成
形面4に、たとえば表面に起毛を有する布地などの表皮
体51を配設する。Then, for molding, first, as shown in FIG. A skin body 51 such as a cloth having a raised surface is disposed on the molding surface 4 .
この場合、たとえば、表皮体51は、その表側を可動側
の成形型2側に向けて上端を成形型1に両面テープ等で
固定して垂設する。この状態では、減圧袋m1ll、温
風送風装置31およびスライド型8の駆動装置41は停
止状態にある。In this case, for example, the skin body 51 is hung with its front side facing the movable mold 2 side and its upper end fixed to the mold 1 with double-sided tape or the like. In this state, the vacuum bag m1ll, the hot air blower 31, and the drive device 41 of the slide mold 8 are in a stopped state.
次に、第3図に示すように、可動側の成形型2を固定側
の成形型1側に前進させて、成形型1゜2の嵌合部6.
7を嵌合させるとともに、そのエツジ部6a、 7aに
より表皮体51の全周における不要部分52を剪断して
除去する。Next, as shown in FIG. 3, the movable mold 2 is advanced toward the fixed mold 1, and the fitting part 6 of the mold 1.2 is moved forward.
7 are fitted, and the unnecessary portion 52 on the entire circumference of the skin body 51 is sheared and removed using the edge portions 6a and 7a.
ついで、可動側の成形型2がさらに前進して、第4図の
ように、固定側の成形型1と型締めされると、表皮体5
1の不要部分52は完全に分離されるとともに、表皮体
51の全周の端末部51aがキャビティ3の外周におい
て成形型1.2間に挟持される。Next, when the movable mold 2 moves further forward and is clamped with the fixed mold 1 as shown in FIG. 4, the skin body 5
1 is completely separated, and the end portion 51a of the entire circumference of the skin body 51 is held between the molds 1.2 on the outer periphery of the cavity 3.
ついで、第5図に示すように、射出ユニット55のノズ
ル56が前進して、成形型1の注入孔9におけるノズル
接合部10に接合し、熱可塑性合成樹脂からなる溶融樹
脂が注入孔9からキャビティ3内に射出充填される。こ
のとき、表皮体51は成形型2のキャビティ形成面5、
すなわち、成形品の表面形状に沿って伸ばされるととも
に、成形品形状の合成樹脂の表面に付着される。Next, as shown in FIG. 5, the nozzle 56 of the injection unit 55 moves forward and joins the nozzle joint 10 in the injection hole 9 of the mold 1, and the molten resin made of thermoplastic synthetic resin is discharged from the injection hole 9. The cavity 3 is injected and filled. At this time, the skin body 51 is the cavity forming surface 5 of the mold 2,
That is, it is stretched along the surface shape of the molded article and is attached to the surface of the synthetic resin shaped like the molded article.
ついで、キャビティ3内に溶融樹脂の充填侵、表皮体5
1を付着した合成樹脂が完全固化しない状態で、すなわ
ち、溶融樹脂の充填直後にまたは充填後1〜2秒後に、
第6図に示すように、可動側の成形型2を所定距離だけ
後退させ、固定側の成形・型1との間を互いの嵌合部6
.7がなお嵌合を続けている所定間隔だけ開く。この際
、成形品61は抜き勾配を持たない可動側の成形型2に
付着されている。Next, the cavity 3 is filled with molten resin, and the skin body 5 is filled.
When the synthetic resin to which 1 is attached is not completely solidified, that is, immediately after filling with molten resin or 1 to 2 seconds after filling,
As shown in FIG. 6, the mold 2 on the movable side is moved back by a predetermined distance, and the fitting part 6 between the mold 2 on the fixed side and the mold 1 on the fixed side is moved back.
.. 7 is still open by a predetermined distance while still being fitted. At this time, the molded product 61 is attached to the movable mold 2 having no draft angle.
この型開きと同時に、減圧装置11の電磁切換弁22が
一方に作動して油圧回路を形成するとともに、ポンプ2
3が作動し、油圧が管路20を介してシリンダ12のピ
ストン13の後側に加わり、かつ、ピストン13の前側
の油圧が管路21を介してオイルタンク25にドレンさ
れる。そして、ピストン13が油圧により前進し、その
ロッド14とともにバキュームビン15を前進させ、先
端のバキューム孔16がキャビティ3内に突出した瞬間
にバキュームポンプ18が作動し、吸引路17を介して
キャビティ3内の減圧を始める。この際、成形型1,2
は全周の嵌合部6,7で接触しており、射出ユニット5
5のノズル56は成形型1のノズル接合部10と接触し
ているとともに、温風送風装置31のバルブ35も閉じ
ており、したがって、キャビティ3内はすみやかに減圧
される。Simultaneously with this mold opening, the electromagnetic switching valve 22 of the pressure reducing device 11 operates in one direction to form a hydraulic circuit, and the pump 2
3 is activated, hydraulic pressure is applied to the rear side of the piston 13 of the cylinder 12 via the conduit 20, and the hydraulic pressure on the front side of the piston 13 is drained to the oil tank 25 via the conduit 21. Then, the piston 13 is moved forward by hydraulic pressure, and the vacuum bottle 15 is moved forward together with the rod 14. At the moment when the vacuum hole 16 at the tip protrudes into the cavity 3, the vacuum pump 18 is activated, and the vacuum bottle 15 is moved forward through the suction path 17. Begin depressurizing the inside. At this time, molds 1 and 2
are in contact at the fitting parts 6 and 7 around the entire circumference, and the injection unit 5
The nozzle 56 of No. 5 is in contact with the nozzle joint 10 of the mold 1, and the valve 35 of the hot air blower 31 is also closed, so the pressure inside the cavity 3 is quickly reduced.
そして、キャビティ3内の減圧を開始してから所定時間
経過して一定の減圧が行なわれた後、各温風送風装置3
1のバルブ35が開き、送風ケース32内にポンプ34
で供給されてあらかじめヒータ33により温められてい
た空気を送風路36から一気にキャビティ3内に送風さ
せる。この送風圧によって、成形品形状の合成樹脂の周
面に残された表皮体51の端末部51aを全周において
折り返し、成形品61の裏面側に巻込み状態とする。こ
の瞬間に、再び可動側の成形型2が前進して型締め動作
を開始し、この型締め動作の信号と同時に減圧装置11
の電磁切換弁22が反転作動し、ピストン13が後退す
るとともにスプリング19の弾性力によっても押し戻さ
れ、バキュームビン15も後退して、先端がキャビティ
3面と面一となり、電磁切換弁22が中立位置に戻ると
ともに、ポンプ23が停止し、バキュームポンプ18も
停止し、さらに、温風送風装置31のバルブ35も閉じ
る。そして、第7図の状態となり、表皮体51の端末部
51aが成形品61の裏面側に結合される。この第7図
の状態で、所定の冷却期間保持する。この際、成形品6
1の合成樹脂は完全に固化していないため、型締めによ
り成形品61の合成樹脂を表皮体51に押し付けること
になり、アンカー効果が発生し、完全密着状態となる。Then, after a predetermined period of time has elapsed since the start of depressurization in the cavity 3 and a constant depressurization has been performed, each hot air blower device 3
1 valve 35 opens, and the pump 34 is inserted into the ventilation case 32.
The air that has been supplied by the heater 33 and warmed in advance by the heater 33 is blown into the cavity 3 from the air passage 36 at once. Due to this blowing pressure, the end portion 51a of the skin body 51 left on the peripheral surface of the synthetic resin in the shape of the molded product is folded back around the entire circumference and rolled up onto the back side of the molded product 61. At this moment, the mold 2 on the movable side moves forward again and starts the mold clamping operation, and at the same time the mold clamping operation is signaled, the pressure reducing device 11
The electromagnetic switching valve 22 operates in reverse, and the piston 13 retreats, and is also pushed back by the elastic force of the spring 19, and the vacuum bottle 15 also moves back, so that its tip becomes flush with the cavity 3, and the electromagnetic switching valve 22 becomes neutral. Upon returning to the position, the pump 23 is stopped, the vacuum pump 18 is also stopped, and the valve 35 of the hot air blower 31 is also closed. Then, the state shown in FIG. 7 is reached, and the end portion 51a of the skin body 51 is bonded to the back side of the molded product 61. The state shown in FIG. 7 is maintained for a predetermined cooling period. At this time, molded product 6
Since the synthetic resin No. 1 is not completely solidified, the synthetic resin of the molded product 61 is pressed against the skin body 51 by mold clamping, and an anchor effect occurs, resulting in a complete adhesion state.
ついで、第、8図のように、可動側の成形型2が後退し
て型開きした後、スライド型8の駆動装置41の電磁切
換弁47が一方に作動して油圧回路を形成するとともに
、ポンプ48が作動し、油圧が管路45を介してシリン
ダ42のピストン43の後側に加わり、かつ、ピストン
43の前側の油圧が管路46を介してオイルタンク25
にドレンされる。そして、ピストン43が油圧により前
進し、そのロッド44とともにスライド型8を前進させ
、成形品61が突き出される。この際、成形品61はス
ライド型8による全面押動により突き出されるため、部
分的な突き出し跡が残ることがなく、表皮体51は良好
な状態で保持され、第9図および第10図に示すように
、表皮体51の端末部51aを裏面側に接着させた成形
品61が得られる。Next, as shown in FIG. 8, after the mold 2 on the movable side is moved back and opened, the electromagnetic switching valve 47 of the drive device 41 of the slide mold 8 operates in one direction to form a hydraulic circuit. The pump 48 operates, and hydraulic pressure is applied to the rear side of the piston 43 of the cylinder 42 via the pipe line 45, and the hydraulic pressure on the front side of the piston 43 is applied to the oil tank 25 via the pipe line 46.
is drained. Then, the piston 43 is moved forward by hydraulic pressure, and together with the rod 44, the slide die 8 is moved forward, and the molded product 61 is ejected. At this time, since the molded product 61 is pushed out by the entire surface of the slide die 8, no partial ejection marks remain, and the skin body 51 is held in a good condition, as shown in FIGS. 9 and 10. As shown, a molded product 61 is obtained in which the end portion 51a of the skin body 51 is adhered to the back side.
成形品61の突き出し完了後は電磁切換弁47が反転作
動し、スライド型8を後退させて、次の成形の準備状態
となる。After the ejection of the molded product 61 is completed, the electromagnetic switching valve 47 is operated in reverse, and the slide die 8 is moved back, making it ready for the next molding.
なお、上記工程において、表皮体51の端末部5taを
折り返す際、キャビティ3内を減圧すると同時に温風を
送風し、表皮体51の端末部51aを巻込むようにして
もよい。また、この成形にあたって、射出ユニット55
のノズル56としては、シャットオフノズルまたは油圧
式のニードル弁ノズルがドルーリングを防止できるので
よい。In the above process, when folding back the end portion 5ta of the skin body 51, the pressure inside the cavity 3 may be reduced and at the same time hot air may be blown to wrap up the end portion 51a of the skin body 51. In addition, in this molding, the injection unit 55
As the nozzle 56, a shut-off nozzle or a hydraulic needle valve nozzle may be used since drooling can be prevented.
次に、第11図および第12図に示す実施例は、前記実
施例のものに、表皮体供給装置71を備えたものである
。この表皮体供給5A@71は、固定側の成形型1の上
下部に支持アーム72.73を介してドラム74.75
が軸架され、この上方のドラムに表皮体51を巻回支持
するとともに、この表皮体51の下端を下方のドラム7
5に連結する。また、この下方のドラム75に、モータ
76が歯車連動機構77を介して連結されている。そし
て、第11図に示すように、成形前l、:おいて、モー
タ76により歯車連動機構77を介して巻取り用の下方
のドラム75を回転し、表皮体51を上方のドラム74
から繰り出して成形型1の型面に表皮体51を張設する
。この際、上方のドラム74にある程度の回転トルクを
持つものを使用することにより、表皮体51が引き下ろ
されても余分に垂るむことがなく所定長の表皮体51が
セットされる。Next, the embodiment shown in FIGS. 11 and 12 is an embodiment in which an epidermis supply device 71 is added to the embodiment described above. This skin supply 5A@71 is supplied to drums 74.75 via support arms 72.73 to the upper and lower parts of the mold 1 on the fixed side.
is mounted on a shaft, and a skin body 51 is wound around and supported on this upper drum, and the lower end of this skin body 51 is connected to a lower drum 7.
Connect to 5. Further, a motor 76 is connected to the lower drum 75 via a gear interlocking mechanism 77. As shown in FIG. 11, before forming, the lower drum 75 for winding is rotated by the motor 76 via the gear interlocking mechanism 77, and the skin body 51 is transferred to the upper drum 74.
The skin body 51 is stretched over the mold surface of the mold 1 by drawing it out from the mold 1. At this time, by using the upper drum 74 having a certain degree of rotational torque, the skin body 51 of a predetermined length can be set without sagging excessively even when the skin body 51 is pulled down.
そして、前記と同様にして成形を行なうが、表皮体51
は上下に連続しているため、額縁状に残された表皮体5
1の不要部分52も上下に連らなって残される。したが
って、成形後は、第12図のように、下方のドラム75
を回転して表皮体51を送り、打ち抜かれて残った不要
部分52をドラム75に巻取ることにより、次の成形に
備えることができる。Then, molding is performed in the same manner as described above, but the skin body 51
is continuous vertically, so the epidermis 5 left in a frame shape
The unnecessary portions 52 of 1 are also left vertically. Therefore, after molding, as shown in FIG. 12, the lower drum 75
By rotating the drum 75 to feed the skin body 51 and winding up the unnecessary portion 52 remaining after punching on the drum 75, it can be prepared for the next molding.
本発明によれば、成形と同時に表皮体の端末部の折り返
し処理を行なえ、表皮体の端末部の処理に2次加工を必
要とせず、成形を容易かつ迅速に行なうことかできる。According to the present invention, the end portion of the skin body can be folded back at the same time as the molding, and the end portion of the skin body does not require secondary processing, and the molding can be performed easily and quickly.
第1図は本発明の成形方法に用いる装置の断面図、第2
図ないし第8図はその成形工程を示す断面図、第9図は
成型品の斜視図、第10図はその断面図、第11図はお
よび第12図は他の実施例を示す断面図である。
1.2・・成形型、3・・キャビティ、4・・ギャビテ
ィ形成面、51・・表皮体、51a ・・端末部、61
・・成形品。
多5ggJFigure 1 is a sectional view of the apparatus used in the molding method of the present invention, Figure 2
8 to 8 are sectional views showing the molding process, FIG. 9 is a perspective view of the molded product, FIG. 10 is a sectional view thereof, and FIGS. 11 and 12 are sectional views showing other embodiments. be. 1.2... Molding mold, 3... Cavity, 4... Gavity forming surface, 51... Skin body, 51a... Terminal part, 61
··Molding. 5ggJ
Claims (3)
ャビティ形成面に表皮体を配設して一対の成形型を型締
めし、 この一対の成形型によって形成されたキャビティ内に熱
可塑性合成樹脂を射出して、成形品形状の合成樹脂の表
面に上記表皮体を付着させ、この表皮体を付着した合成
樹脂が完全固化しない状態で上記一対の成形型を所定間
隔型開きし、この一対の成形型のキャビティ内を減圧す
るとともに、キャビティ内に温風を送風して、成形品形
状の合成樹脂の周囲に残された表皮体の端末部を形成品
部分の裏面側に折り返し状態とし、上記一対の成形型を
再度型締めして、積層成形品を成形する ことを特徴とする表皮体付き合成樹脂製品の成形方法。(1) A skin body is disposed on the cavity forming surface of one of the molds in a pair of opposing molds, the pair of molds are clamped, and a thermoplastic compound is formed in the cavity formed by the pair of molds. The skin is attached to the surface of the synthetic resin in the shape of a molded product by injecting resin, and the pair of molds is opened at a predetermined interval while the synthetic resin to which the skin is attached is not completely solidified. While reducing the pressure inside the cavity of the mold, warm air is blown into the cavity to fold the end portion of the skin body left around the synthetic resin in the shape of the molded product to the back side of the molded product, A method for molding a synthetic resin product with a skin body, comprising clamping the above-mentioned pair of molds again to mold a laminate molded product.
所定間隔型開きしてキャビティ内を減圧した後、キャビ
ティ内に温風を送風することを特徴とする特許請求の範
囲第1項記載の表皮体付き合成樹脂製品の成形方法。(2) When folding back the end portion of the skin body, the pair of molds are opened at a predetermined interval to reduce the pressure inside the cavity, and then warm air is blown into the cavity. Method for molding the described synthetic resin product with a skin body.
所定間隔型開きしてキャビティ内を減圧すると同時に、
キャビティ内に温風を送風することを特徴とする特許請
求の範囲第1項記載の表皮体付き合成樹脂製品の成形方
法。(3) At the time of folding back the end portion of the skin body, a pair of molds are opened at a predetermined interval to reduce the pressure inside the cavity, and at the same time,
A method for molding a synthetic resin product with a skin body according to claim 1, characterized in that hot air is blown into the cavity.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30224786A JPS63154315A (en) | 1986-12-18 | 1986-12-18 | Molding method of synthetic resin product with skin material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30224786A JPS63154315A (en) | 1986-12-18 | 1986-12-18 | Molding method of synthetic resin product with skin material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63154315A true JPS63154315A (en) | 1988-06-27 |
Family
ID=17906719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30224786A Pending JPS63154315A (en) | 1986-12-18 | 1986-12-18 | Molding method of synthetic resin product with skin material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63154315A (en) |
-
1986
- 1986-12-18 JP JP30224786A patent/JPS63154315A/en active Pending
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