JPS6398408A - Method and apparatus for slush molding - Google Patents
Method and apparatus for slush moldingInfo
- Publication number
- JPS6398408A JPS6398408A JP24471686A JP24471686A JPS6398408A JP S6398408 A JPS6398408 A JP S6398408A JP 24471686 A JP24471686 A JP 24471686A JP 24471686 A JP24471686 A JP 24471686A JP S6398408 A JPS6398408 A JP S6398408A
- Authority
- JP
- Japan
- Prior art keywords
- slush
- mold
- reservoir tank
- powder
- slush mold
- 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
- 238000000465 moulding Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000003507 refrigerant Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005992 thermoplastic resin Polymers 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 2
- 238000013007 heat curing Methods 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 46
- 238000003756 stirring Methods 0.000 abstract description 7
- 230000003028 elevating effect Effects 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229920001944 Plastisol Polymers 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004999 plastisol Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005323 electroforming Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、pvc樹脂、A B 34R1脂、P V
C4H脂とABS樹脂の混合物あるいはpvc樹脂と発
泡PVC,,ABS樹脂と発泡PPXABS樹脂と発泡
PE等の熱可塑性樹脂粉体(以下パウダーと称す)を原
料とするスラッシュ成形法(以下パウダースラッシュ成
形と称す)およびパウダースラッシュ成形装置の改良に
関するものである。Detailed Description of the Invention (Industrial Field of Application) The present invention is directed to pvc resin, A B 34R1 resin, P V
A slush molding method (hereinafter referred to as powder slush molding) uses thermoplastic resin powder (hereinafter referred to as powder) such as a mixture of C4H resin and ABS resin, PVC resin and foamed PVC, ABS resin, foamed PPXABS resin, and foamed PE as raw materials. This invention relates to improvements in powder slush molding equipment.
(従来技術)
スラッシュ成形は、精密な形状模写が可能であり、皮様
の高級感のある表皮の成形が可能であるため、自動車内
装品、家具等の表皮の成形に広く採用されている。(Prior Art) Slash molding is widely used for molding the skins of automobile interior parts, furniture, etc. because it allows precise shape reproduction and the molding of skins with a leather-like and luxurious feel.
そして、近年従来主体であったプラスチゾルを原料とす
るスラッシュ成形(特公昭54−10581号公報参照
)にかわってパウダーを原料とするパウダースラッシュ
成形が提案され、各方面において実用化されている。In recent years, powder slush molding using powder as a raw material has been proposed in place of slush molding using plastisol as a raw material (see Japanese Patent Publication No. 54-10581), which has been the main ingredient in the past, and has been put into practical use in various fields.
ここで、パウダースラッシュ成形の代表的な成形工程に
ついて記載すると、背面に熱媒体配管を設ける等により
成形面の温度調整を可能としたスラッシュ成形型と、上
部が開口した箱であって内部にパウダーを入れる事がで
き、且つスラッシュ成形型と一体に結合可能なリザーバ
タンクおよび回転装置を用い、最初成形型の開口を下向
した状態で、開口が上向するリザーバタンクと一体に結
合し、回転装置によって両者を結合したままの状態で反
転する事によりパウダーを成形型のキャビティに投入し
成形面に近接する部分のパウダーを成形型からの熱によ
り溶融させ、成形時に付着させた後、再び成形型および
リザーバタンクを反転し、余剰のパウダーをリザーバタ
ンク内に戻した後成形型とリザーバタンクを分離し、表
皮を更に加熱キュアの後脱型するものである。(特開昭
58−20517号公報参照)
また、これに類似する工程としてはりザーバタンクを用
いる代わりに成形型の外部にパウダー投入装置および排
出装置を配備し、パウダーの投入排出を行うものも提案
されている。(特開昭60−157818号公報参照)
(発明が解決しようとする問題点)
従来技術のパウダースラッシュ成形は、それ以前のプラ
スチゾルを使用したスラッシュ成形に比較して厚みの薄
い表皮を成形する事が可能であり、原料の節約に寄与す
る効果を有するものであるが、本発明は更に原料の節約
の可能性を求めて研究を重ねたところ、従来技術には次
のような欠点がある事を発見した。Here, to describe the typical molding process of powder slush molding, there is a slush mold that allows temperature adjustment of the molding surface by installing heat transfer pipes on the back, etc., and a box with an open top that contains powder inside. By using a reservoir tank and a rotation device that can be inserted into the slush mold and integrally combined with the slush mold, the opening of the mold is initially facing downward, and the opening is connected integrally with the reservoir tank whose opening faces upward, and the rotation is performed. The powder is injected into the cavity of the mold by inverting the two while they are still connected by a device, and the powder close to the molding surface is melted by the heat from the mold, adheres to it during molding, and is then molded again. After inverting the mold and reservoir tank and returning the excess powder into the reservoir tank, the mold and reservoir tank are separated, and the skin is further heat-cured and then removed from the mold. (Refer to Japanese Unexamined Patent Publication No. 58-20517.) A similar process has also been proposed in which a powder charging device and a discharge device are provided outside the mold to charge and discharge powder instead of using a beam reservoir tank. ing. (Refer to Japanese Unexamined Patent Publication No. 157818/1983) (Problems to be solved by the invention) The powder slush molding of the prior art molds a thinner skin compared to the previous slush molding using plastisol. However, as a result of repeated research into the possibility of further saving raw materials, it was discovered that the conventional technology has the following drawbacks. discovered.
即ち、従来技術のパウダースラッシュ成形を一定時間行
いその厚さを個々測定したところ、第4図のように成形
時期が後の表皮はど厚さが厚くなり、また欠肉、ピンホ
ール等の外観の欠陥も増加する傾向にあった。That is, when powder slush molding using the conventional technology was performed for a certain period of time and the thickness was measured individually, as shown in Figure 4, the thickness of the skin became thicker after the molding period, and the appearance of missing parts, pinholes, etc. There was also a tendency for defects to increase.
そこで、先の研究に基づ〈従来技術のかかる欠点に着目
し、常に一定厚さ、一定品質の表皮を成形する事により
品質の安定化、原料の低減に寄与する事ができるスラッ
シュ成形法および成形型を提供する事を目的とするもの
である。Therefore, based on previous research, we focused on the drawbacks of the conventional technology and developed a slush molding method that can contribute to stabilizing quality and reducing raw material consumption by always molding a skin of constant thickness and constant quality. The purpose is to provide molds.
(問題を解決するための手段)
そして、従来技術について種々調査の結果、上述の成形
を重ねるにつれて表皮の厚みが増加する原因は、以下の
通りと判明した。(Means for Solving the Problem) As a result of various investigations into conventional techniques, it has been found that the reason why the thickness of the skin increases as the above-mentioned molding is repeated is as follows.
即ち、成形回数を重ねる程にパウダーやパウダー粒子間
の空気が、成形型から加熱されM熱されて溶融を起こさ
ないまでも相当の温度に上昇し、成形型からのわずかな
加熱により溶融しやすい状態となり、成形される表皮が
厚肉化し、またパウダー自体が粘着性を帯び、流動性が
悪化して複雑形状部へのパウダーのまわりが悪化するた
めピンホール等が発生するものであった。In other words, the more times the powder is molded, the more the powder and the air between the powder particles are heated by the mold, and the temperature rises to a considerable level, even if it does not cause melting, and it is easy to melt due to slight heating from the mold. As a result, the skin to be molded becomes thicker, and the powder itself becomes sticky, resulting in poor fluidity and poor adhesion of the powder to complex-shaped parts, resulting in pinholes and the like.
そこで、上述の調査に基づき先の目的を達成するための
本発明の特徴は、加熱および冷却が可能なスラッシュ成
形型のキャビティ内に、粉体状の熱可塑性樹脂を投入し
、スラッシュ成形型の成形面に半溶融状の表皮を成形後
余剰の粉体状の熱可塑性樹脂を排出し、前記半溶融状の
表皮を加熱キュアの後冷却し脱型する各工程を順次繰り
返すスラッシュ成形法において、スラッシュ成形型から
排出された粉体状の熱可塑性樹脂を冷却する工程を有す
る事を特徴とするスラッシュ成形法。Therefore, the feature of the present invention to achieve the above object based on the above-mentioned research is that a powdered thermoplastic resin is charged into the cavity of a slush mold that can be heated and cooled, and the slush mold is heated and cooled. In the slush molding method, the steps of forming a semi-molten skin on the molding surface, discharging the excess thermoplastic resin in powder form, heating and curing the semi-molten skin, then cooling and demolding are repeated in sequence. A slush molding method characterized by a step of cooling a powdered thermoplastic resin discharged from a slush mold.
加熱および冷却が可能なスラッシュ成形型、上面が開口
するとともに、スラッシュ成形型と一体一 〇
に結合する機能を有する箱体であるリザーバタンク、お
よび前記スラッシュ成形型、リザーバタンクを−・体に
回転あるいは揺動する回転装置より成るスラッシュ成形
装置において、リザーバタンク内部に冷風発生装置に接
続されたノズルを有する事を特徴とするスラッシュ成形
装置。A slush mold that can be heated and cooled, a reservoir tank that is a box with an open top surface and the function of integrally joining the slush mold, and a slush mold that rotates the reservoir tank into a body. Alternatively, a slush molding device comprising an oscillating rotating device, characterized in that the slush molding device has a nozzle connected to a cold air generator inside a reservoir tank.
加熱および冷却が可能なスラッシュ成形型、上面が開口
するとともに、スラッシュ成形型と一体に結合する機能
を有する箱体であるリザーバタンク、および前記スラッ
シュ成形型、リザーバタンクを一体に回転あるいは揺動
する回転装置により成るスラッシュ成形装置において、
リザーバタンク内部に、冷媒発生装置に接続されたパイ
プを有する事を特徴とするスラッシュ成形装置。A slush mold that can be heated and cooled, a reservoir tank that is a box with an open top surface and a function of being integrally connected to the slush mold, and the slush mold and the reservoir tank that rotate or swing together. In a slush molding device consisting of a rotating device,
A slush forming device characterized by having a pipe connected to a refrigerant generator inside a reservoir tank.
加熱および冷却が可能なスラッシュ成形型、上面が開口
するとともに、スラッシュ成形型と一体に結合する機能
を有する箱体であるリザーバタンク、および前記スラッ
シュ成形型、リザーバタンクを一体に回転あるいは揺動
する回転装置により成るスラッシュ成形装置において、
リザーバタンクの外周部に、冷媒発生装置に接続された
ジャケットを有する事を特徴とするスラッシュ成形装置
の以上4点にある。A slush mold that can be heated and cooled, a reservoir tank that is a box with an open top surface and a function of being integrally connected to the slush mold, and the slush mold and the reservoir tank that rotate or swing together. In a slush molding device consisting of a rotating device,
There are four points mentioned above regarding the slush molding device, which is characterized by having a jacket connected to a refrigerant generator on the outer periphery of the reservoir tank.
(実施例) 以下更に、本発明の具体的実施例について説明する。(Example) Further, specific examples of the present invention will be described below.
第1図は本発明のスラッシュ成形装置であり、スラッシ
ュ成形型(1)、リザーバタンク(2)、回転装置(3
)および昇降テーブル(4)により構成される。スラッ
シュ成形型(11は、電気鋳造等により形状模写された
金型(5)を両端に回転軸(6)を有するモールドボッ
クス(7)の−面に配し、該モールドボックス(7)の
内部に外部の図示しない熱風発生装置と冷風発生装置に
接続されるマニホールド(8)および該マニホールド(
8)上に設けられ金型(5)の背面に近接するノズル(
9)を有し、該ノズル(9)により熱風あるいは冷風を
金型(5)の背面に吹き付ける事により温度調整可能に
構成されたものであり、また回転軸(6)の一方には歯
車00)が設けられている。回転装置(3)は左右一対
の柱曲(■の頂部にそれぞれ軸受(1■が設けられると
ともに、一方の柱θ1)の中間部に電動tM (14)
が搭載され、電動機例)の出力軸には歯車(■が接続さ
れている。リザーバタンク(2)は、パウダー(1[O
を入れる箱であり、シリンダθカにより昇降可能な昇降
テーブル(4)上に結合手段を有せずに搭載されるとと
もに、スラッシュ成形型(1)との結合機能を有しく図
示せず)、スラッシュ成形型(11と結合分割が可能で
ある。Figure 1 shows the slush molding apparatus of the present invention, which includes a slush mold (1), a reservoir tank (2), and a rotating device (3).
) and an elevating table (4). A slush mold (11 is a mold (5) whose shape has been copied by electroforming etc. is placed on the - side of a mold box (7) having a rotating shaft (6) at both ends, and the interior of the mold box (7) is A manifold (8) connected to an external hot air generator and a cold air generator (not shown) and the manifold (
8) A nozzle (
9), and the temperature can be adjusted by blowing hot or cold air onto the back surface of the mold (5) using the nozzle (9), and a gear 00 is mounted on one side of the rotating shaft (6). ) is provided. The rotating device (3) is equipped with a bearing (1) at the top of a pair of left and right columns (■), and an electric tM (14) in the middle of one of the columns θ1.
is installed, and a gear (■ is connected to the output shaft of the electric motor example).The reservoir tank (2) is equipped with a powder (1[O
It is a box in which the slush molding die (1) is mounted without a coupling means on a lifting table (4) which can be raised and lowered by a cylinder θ force, and has a coupling function with the slush mold (1) (not shown). It is possible to combine and divide with the slush mold (11).
そして、リザーバタンク(2)の内部には、冷凍機およ
び送風機を内蔵する冷風発生装置0乃にホース■をもっ
て接続され冷風噴射ノズル(18)と攪拌羽根09)を
千鳥状に並設するとともにリザーバタンク(2)の外部
側壁に取付けられた電動機、エアモータ、油圧モータ等
の原動機■により回転可能に構成された直線状のパイプ
21)を有する特徴を具備するものである。Inside the reservoir tank (2), cold air injection nozzles (18) and stirring blades 09) are arranged in a staggered manner, which are connected with a hose to a cold air generator 0 that includes a refrigerator and a blower. It is characterized by having a linear pipe 21) configured to be rotatable by a prime mover (2) such as an electric motor, an air motor, or a hydraulic motor attached to the external side wall of the tank (2).
そして、これらスラッシュ成形型(1)、リザーバタン
ク(2)、回転装置(3)、昇降テーブル(4)は、ス
ラッシュ成形型(1)の両回転軸(6)が、回転装置(
3)の軸受(1■により支承されるとともに回転軸(6
)の山部00)は回転装置(3)の電動機(4)の出力
軸に取付りられた歯車(如と嵌合し、回転軸(6)を中
心に回転可能であり、リザーバタンク(2)は昇降テー
ブル(4)上に搭載されてスラッシュ成形型+1.)の
真下に配設される。These slush molding mold (1), reservoir tank (2), rotating device (3), and lifting table (4) are arranged so that both rotating shafts (6) of the slush molding mold (1) are connected to the rotating device (
3) is supported by the bearing (1■) and the rotating shaft (6
) is fitted with the gear (like the gear) attached to the output shaft of the electric motor (4) of the rotating device (3), and is rotatable around the rotating shaft (6). ) is mounted on the lifting table (4) and placed directly below the slush mold +1.).
本実施例のスラッシュ成形装置を用いてのスラッシュ成
形法を説明すると、従来のパウダースラッシュ成形と略
同様に、予めリザーバタンク(2)内にパウダー(10
を投入し、該リザーバタンク(2)を昇降テーブル(4
)により上昇させてスラッシュ成形型(1)と合致させ
、図示しない結合装置により両者を結合し、一体のまま
で両者を反転する。To explain the slush molding method using the slush molding apparatus of this embodiment, in substantially the same way as conventional powder slush molding, powder (10
and place the reservoir tank (2) on the lifting table (4).
) to match the slush molding die (1), the two are joined by a joining device (not shown), and both are turned over while still being integral.
そして、スラッシュ成形型(1)の成形面に半溶融表皮
を付着させた後、再びスラッシュ成形型(1)とリザー
バタンク(2)とを、反転してスラッシュ成形型(1)
を上、リザーバタンク(2)を下に配備し、パウダー(
1山をリザーバタンク(2)にもどす。After attaching the semi-molten skin to the molding surface of the slush mold (1), the slush mold (1) and the reservoir tank (2) are turned over again to form the slush mold (1).
on top, reservoir tank (2) on the bottom, and powder (
Return one pile to the reservoir tank (2).
そうした後、リザーバタンク(21)をスラッジ1成形
(1)から分離し待機させるとともにスラッシュ成形型
(1)内においては、更に表皮を加熱キュアされ脱型さ
れるがその間に、リザーバタンク(2)内において、ノ
ズル(18)から冷風を吹き出すとともに原動機■によ
りパイプ(21)を回転し、攪拌羽根(19)を回転し
てリザーバタンク(2)内のパウダー(1■およびパウ
ダー(10間の空気を均等に冷却する。After that, the reservoir tank (21) is separated from the sludge 1 molding (1) and placed on standby, and in the sludge molding mold (1), the skin is further heat-cured and demolded, but in the meantime, the reservoir tank (2) Inside, cold air is blown out from the nozzle (18), and the prime mover (2) rotates the pipe (21), which rotates the stirring blade (19) to remove the powder (1) and air between the powder (10) and the powder (10) in the reservoir tank (2). cool evenly.
そして、上述のスラッシュ成形型(1)においての表皮
のキュア工程、脱型工程が終了すれば、リザーバタンク
のノズル(+8)からの冷風の吹き出しおよびパイプ2
1)の回転を停止し、再び新たにスラッシュ成形を開始
する。When the skin curing process and demolding process in the slush mold (1) described above are completed, cold air is blown from the nozzle (+8) of the reservoir tank and the pipe 2
Stop the rotation of step 1) and start slush molding again.
本実施例のスラッシュ成形方法および成形装置は、リザ
ーバタンクの主に待機中に、パウダーの中に冷風を混入
し、また一様に攪拌する事により、スラッシュ成形工程
中にスラッシュ成形型から加えられ蓄積された熱を放出
し、パウダーを一定の温度に保つ事により常に、一定厚
さ、一定品質の表皮を成形する事ができる。The slush molding method and molding apparatus of this embodiment mixes cold air into the powder mainly while the reservoir tank is on standby and uniformly stirs the powder so that the powder is not added from the slush mold during the slush molding process. By releasing the accumulated heat and keeping the powder at a constant temperature, it is possible to always form a skin of a constant thickness and quality.
本実施例の攪拌羽根はリザーバタンク内のパウダーを均
一に攪拌し冷却する事を目的とするものであるから、パ
ウダーが飛散するほどに高速回転する事は好ましくなく
、周速度が2m/S以下が好ましい回転速度であり、最
も好ましくは0.5m / s以下がよい。Since the purpose of the stirring blade in this example is to uniformly stir and cool the powder in the reservoir tank, it is not preferable to rotate at such high speed that the powder will scatter, and the peripheral speed should be 2 m/s or less. is the preferred rotational speed, most preferably 0.5 m/s or less.
また、上記攪拌羽根は、ノズルとは別個に設けてもよく
、その際にはノズルを直接リザーバタンクの壁面に設け
てもよい。Further, the stirring blade may be provided separately from the nozzle, and in that case, the nozzle may be provided directly on the wall surface of the reservoir tank.
本実施例において、ノズルから吹き出す冷風の吹き出し
圧力は任意であるが、好ましくはパウダーが舞い上がら
ない限度以下がよい。In this embodiment, the blowing pressure of the cold air blowing out from the nozzle is arbitrary, but it is preferably below the limit at which powder does not fly up.
また、本実施例の冷風の吹き出し時間は、任意であり、
常時吹き出し続けていてもかまわないが、リザーバタン
クが成形型と結合している間は、表皮あるいはスラッシ
ュ成形型の昇温の妨げになるので停止する事が好ましい
。In addition, the cold air blowing time in this embodiment is arbitrary,
Although it is possible to continue blowing at all times, it is preferable to stop the blowing while the reservoir tank is connected to the mold, since this will hinder the temperature rise of the skin or slush mold.
本実施例においては、冷風発生装置については、実施例
に記載の通常の冷凍機および逆風機を有するものの他、
外気温の状態によっては単なる送風機であっもよい。In this example, the cold air generator includes, in addition to the normal refrigerator and head blower described in the example,
A simple blower may be used depending on the outside temperature.
また、本発明のスラッシュ成形法に使用する本実施例以
外の装置としては、第2図のようにリザーバタンク(3
0)内に螺旋状の銅、アルミニウム等の熱伝導性の良好
な素材から成る伝熱パイプ(31)を設は外部の図示し
ない冷媒発生装置と、冷水、フレオンガス、アンモニア
ガス等の冷媒を循環するように各配管を行う事により先
の実施例と同様の効果を得る事ができる。In addition, as a device other than this embodiment used in the slush molding method of the present invention, a reservoir tank (3
0) A spiral heat transfer pipe (31) made of a material with good thermal conductivity such as copper or aluminum is installed inside to circulate a refrigerant such as cold water, Freon gas, or ammonia gas with an external refrigerant generator (not shown). By arranging each piping in this way, the same effect as in the previous embodiment can be obtained.
また、第3図のようにリザーバタンクの構成を箱状のタ
ンク部(40)の外側にジャケット部(41)を設け、
先の実施例と同様にジャケット部(41)内に冷媒を循
環しても同様の効果を得ることができる。In addition, as shown in Fig. 3, the structure of the reservoir tank is such that a jacket part (41) is provided on the outside of a box-shaped tank part (40).
Similar effects can be obtained by circulating the refrigerant within the jacket portion (41) as in the previous embodiment.
(効果)
本発明のスラッシュ成形法は、成形工程においてスラッ
シュ成形型により加熱されたパウダーを冷却する工程を
有する事により、リザーバタンク内のパウダーおよびパ
ウダーを一定温度に保持しパウダーの性質変化を防止し
、常時一定厚さ、一定品質の表皮の成形を可能とする効
果があり、品質の安定化、原材料の低減に寄与する事が
できるものである。(Effects) The slush molding method of the present invention includes a step of cooling the powder heated by the slush mold during the molding process, thereby maintaining the powder in the reservoir tank and the powder at a constant temperature and preventing changes in the properties of the powder. However, it has the effect of making it possible to form a skin of constant thickness and quality at all times, and can contribute to stabilizing quality and reducing the amount of raw materials used.
第1図は本発明の具体的実施例のスラッシュ成形装置の
断面図であり、第2図第3図は第1図と異なる本発明の
スラッシュ成形装置のリザーバタンクの断面図であり、
第4図は従来技術により成形された表皮の、厚さと成形
時期との関係を示すグラフである。
(1)・・・スラッシュ成形
(2)・・・リザーバタンク
(3)・・・回転装置
り1B)・・・ノズル
(31)・・・パイプ
(41)・・・シャケ・7ト
特許出願人 三ツ星ベルト株式会社第2図
第3図
第4図
時闇FIG. 1 is a cross-sectional view of a slush molding device according to a specific embodiment of the present invention, and FIG. 2 and FIG. 3 are cross-sectional views of a reservoir tank of the slush molding device of the present invention, which is different from FIG. 1.
FIG. 4 is a graph showing the relationship between the thickness and molding time of the skin molded by the conventional technique. (1)...Slush molding (2)...Reservoir tank (3)...Rotating device 1B)...Nozzle (31)...Pipe (41)...Shake 7 patent application People Mitsuboshi Belting Co., Ltd. Figure 2 Figure 3 Figure 4 Tokiyami
Claims (1)
ティ内に、粉体状の熱可塑性樹脂を投入し、スラッシュ
成形型の成形面に半溶融状の表皮を成形後余剰の粉体状
の熱可塑性樹脂を排出し、前記半溶融状の表皮を加熱キ
ュアの後冷却し脱型する各工程を順次繰り返すスラッシ
ュ成形法において、スラッシュ成形型から排出された粉
体状の熱可塑性樹脂を冷却する工程を有する事を特徴と
するスラッシュ成形法。 2、加熱および冷却が可能なスラッシュ成形型、上面が
開口すると共にスラッシュ成形型と一体に結合する機能
を有する箱体であるリザーバタンク、および前記スラッ
シュ成形型、リザーバタンクを一体に回転あるいは揺動
する回転装置より成るスラッシュ成形装置において、リ
ザーバタンクの内部に、冷風発生装置に接続それたノズ
ルを有する事を特徴とするスラッシュ成形装置。 3、加熱および冷却が可能なスラッシュ成形型、上面が
開口すると共にスラッシュ成形型と一体に結合する機能
を有する箱体であるリザーバタンク、および前記スラッ
シュ成形型、リザーバタンクを一体に回転あるいは揺動
する回転装置より成るスラッシュ成形装置において、リ
ザーバタンクの内部に冷媒発生装置に接続されたパイプ
を有する事を特徴とするスラッシュ成形装置。 4、加熱および冷却が可能なスラッシュ成形型、上面が
開口すると共にスラッシュ成形型と一体に結合する機能
を有する箱体であるリザーバタンク、および前記スラッ
シュ成形型、リザーバタンクを一体に回転あるいは揺動
する回転装置より成るスラッシュ成形装置において、リ
ザーバタンクの外周部に、冷媒発生装置に接続されたジ
ャケットを有する事を特徴とするスラッシュ成形装置。[Claims] 1. Powdered thermoplastic resin is put into the cavity of a slush mold that can be heated and cooled, and after forming a semi-molten skin on the molding surface of the slush mold, the excess In the slush molding method, the steps of discharging a powdered thermoplastic resin, heat curing the semi-molten skin, cooling it, and demolding the mold are sequentially repeated. A slush molding method characterized by a step of cooling the resin. 2. A slush mold that can be heated and cooled, a reservoir tank that is a box with an open top surface and has the function of being integrally connected to the slush mold, and the slush mold and the reservoir tank are rotated or oscillated together. What is claimed is: 1. A slush molding device comprising a rotating device, the slush molding device comprising a nozzle connected to a cold air generator inside a reservoir tank. 3. A slush mold that can be heated and cooled; a reservoir tank that is a box with an open top surface and a function of integrally joining the slush mold; and a slush mold and the reservoir tank that rotate or swing together. What is claimed is: 1. A slush molding device comprising a rotating device, characterized in that the slush molding device has a pipe connected to a refrigerant generator inside a reservoir tank. 4. A slush mold that can be heated and cooled; a reservoir tank that is a box with an open top surface and a function of integrally joining the slush mold; and a slush mold and the reservoir tank that rotate or swing together. What is claimed is: 1. A slush molding device comprising a rotating device, characterized in that the slush molding device has a jacket connected to a refrigerant generating device on the outer periphery of a reservoir tank.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24471686A JPS6398408A (en) | 1986-10-14 | 1986-10-14 | Method and apparatus for slush molding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24471686A JPS6398408A (en) | 1986-10-14 | 1986-10-14 | Method and apparatus for slush molding |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6398408A true JPS6398408A (en) | 1988-04-28 |
JPH0476288B2 JPH0476288B2 (en) | 1992-12-03 |
Family
ID=17122845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24471686A Granted JPS6398408A (en) | 1986-10-14 | 1986-10-14 | Method and apparatus for slush molding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6398408A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0390322A (en) * | 1989-09-01 | 1991-04-16 | Toray Eng Co Ltd | Powder box for slush molding |
US5221539A (en) * | 1991-03-05 | 1993-06-22 | Peguform-Werke Gmbh | Apparatus for the production of molded skins and bodies of plastic material |
JP2007098670A (en) * | 2005-09-30 | 2007-04-19 | Inoac Corp | Molding method and molding apparatus for sheet-shaped molding |
-
1986
- 1986-10-14 JP JP24471686A patent/JPS6398408A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0390322A (en) * | 1989-09-01 | 1991-04-16 | Toray Eng Co Ltd | Powder box for slush molding |
US5221539A (en) * | 1991-03-05 | 1993-06-22 | Peguform-Werke Gmbh | Apparatus for the production of molded skins and bodies of plastic material |
JP2007098670A (en) * | 2005-09-30 | 2007-04-19 | Inoac Corp | Molding method and molding apparatus for sheet-shaped molding |
Also Published As
Publication number | Publication date |
---|---|
JPH0476288B2 (en) | 1992-12-03 |
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