JPH045537B2 - - Google Patents
Info
- Publication number
- JPH045537B2 JPH045537B2 JP61095808A JP9580886A JPH045537B2 JP H045537 B2 JPH045537 B2 JP H045537B2 JP 61095808 A JP61095808 A JP 61095808A JP 9580886 A JP9580886 A JP 9580886A JP H045537 B2 JPH045537 B2 JP H045537B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- cracking
- moving
- limit switch
- molding machine
- 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
- 238000005336 cracking Methods 0.000 claims description 40
- 239000011324 bead Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 238000010097 foam moulding Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000004794 expanded polystyrene Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、型内発泡成形機（以下、成形機とい
う）のクラツキング（固定型と移動型が完全に締
まる前の０〜20ミリの隙間）調整法の改良に関す
るものであり、更に詳しくは、遠隔で簡単にクラ
ツキング巾を調整できる方法を提供するものであ
る。Detailed Description of the Invention "Field of Industrial Application" The present invention is applicable to cracking of an in-mold foam molding machine (hereinafter referred to as a "molding machine"). ) This invention relates to an improvement in the adjustment method, and more specifically, it provides a method that allows the cracking width to be easily adjusted remotely.
「従来技術と問題点」
従来から、発泡ポリスチレンの予備発泡粒子
（以下、予発ビーズという）を型内発泡成形機で
所望の形状に成形する事が行われ、近年は、発泡
ポリエチレンや発泡ポリプロピレン等のポリオレ
フイン系樹脂の予発ビーズによる型内発泡成形も
盛んになつてきている。"Prior Art and Problems" Conventionally, pre-expanded beads of expanded polystyrene (hereinafter referred to as pre-expanded beads) have been molded into a desired shape using an in-mold foam molding machine, and in recent years, expanded polystyrene and expanded polypropylene In-mold foam molding using pre-expanded beads made of polyolefin resins such as polyolefin resins is also becoming popular.
かかる型内発泡成形においては、予発ビーズを
金型に充填する際、金型の細部まで最密充填に近
づける為に、第１図Ａの様に、固定金型１と移動
金型２との間に20mm程度迄のクラツキング巾
（Ｗ）をとつて充填機３より予発ビーズ４を充填
した後、同Ｂ図の様に両金型を閉じ、即ちクラツ
キング巾を０として、水蒸気管５より水蒸気を金
型内に導入し、蒸気細孔６より予発ビーズを加
熱、融着一体化し、同Ｃ図の様に、冷却管７及び
冷却ノズル８からの冷却水により冷却して金型通
りの成形体９とした後、金型からとり出すという
方法が一般的に採用されている。上記において、
クラツキグ金（Ｗ）は、予備発泡ビーズが飛び出
さない巾、即ち予発ビーズの直径より狭い巾から
０の間に調整される。 In such in-mold foam molding, when filling the mold with preliminary beads, a fixed mold 1 and a movable mold 2 are used, as shown in FIG. After filling the preliminary beads 4 from the filling machine 3 with a cracking width (W) of up to about 20 mm between them, both molds are closed as shown in Figure B, that is, the cracking width is set to 0, and the steam pipe 5 is filled. Water vapor is introduced into the mold, and the beads are heated and fused together through the steam pores 6, and as shown in Fig. C, they are cooled with cooling water from the cooling pipe 7 and the cooling nozzle 8 to form the mold. Generally, a method is adopted in which the molded body 9 is formed into a standard molded body 9 and then taken out from the mold. In the above,
The cracking gold (W) is adjusted between a width at which the pre-foamed beads do not pop out, that is, a width narrower than the diameter of the pre-foamed beads, and 0.
クラツキング巾を大きくすると金型への充填性
は良くなるが、成形体の目付（重量／１個の成形
品）は予発ビーズ充填時の金型容積が大きくなる
分だけ大きくなる。従つて、通常は予備発泡ビー
ズの発泡倍率の変化による成形体発泡倍率（目
付）のコントロール、及び成形品のコーナー部分
への充填性をみながら、クラツキング巾を最適な
寸法に設定する。 Increasing the cracking width improves the ability to fill the mold, but the basis weight (weight/one molded product) of the molded product increases by the amount of mold volume at the time of preliminary bead filling. Therefore, the cracking width is usually set to an optimal size while controlling the foaming ratio (basis weight) of the molded product by changing the foaming ratio of the pre-foamed beads and checking the filling properties of the corner portions of the molded product.
現在、一般に行われている成形機のクラツキン
グ調整方法は、第２図に示す如く、移動金型２に
取りつけられた移動カム１０がリミツトスイツチ
１１を押すと、油圧シリンダー１２の送りが止ま
り、移動金型２が一旦停止し、第１図Ａの様に、
所定のクラツキング巾（Ｗ）を保つた状態に移
る。金型内に予発ビーズが満たされると、再度油
圧シリンダー１２が送りを開始し、第１図Ｂの如
く、金型は閉じられ、加熱工程から第１図Ｃの様
に冷却工程を経て、金型から成形体が取り出され
る。 As shown in Fig. 2, the currently common cracking adjustment method for molding machines is that when the movable cam 10 attached to the movable mold 2 presses the limit switch 11, the feed of the hydraulic cylinder 12 is stopped and the movable mold is Mold 2 stops once, and as shown in Figure 1A,
Move to a state where the predetermined cracking width (W) is maintained. When the mold is filled with preliminary beads, the hydraulic cylinder 12 starts feeding again, the mold is closed as shown in FIG. 1B, and goes through a heating process and a cooling process as shown in FIG. 1C. The molded body is taken out from the mold.
この成形機において、クラツキングの調整を行
うには、一旦成形機の電源を切り、移動カム１０
の固定ボルト１３をゆるめ、移動カム１０を所定
量左又は右へ移動させた後、固定ボルト１０を締
め、再度成形機の電源を入れる。そして移動金型
２を型内の位置からスタートさせ、クラツキング
工程で再び金型を停止させ、クラツキング巾が所
定寸法になつているかを測定する。この操作を繰
り返す事により、所定のクラツキング巾に設定す
ると云う極めて煩雑な工程を踏まざるを得ず、作
業能率の点で大きな問題を包含している。 To adjust cracking in this molding machine, first turn off the power to the molding machine, and then
After loosening the fixing bolt 13 and moving the moving cam 10 to the left or right by a predetermined amount, tighten the fixing bolt 10 and turn on the power to the molding machine again. Then, the movable mold 2 is started from a position inside the mold, the mold is stopped again in the cracking process, and it is measured whether the cracking width has reached a predetermined dimension. By repeating this operation, an extremely complicated process of setting the cracking width to a predetermined width is required, which poses a major problem in terms of work efficiency.
「問題点を解決するための手段」
本発明者は、かかる実情に鑑み上記問題点を解
消すべく鋭意研究の結果、型内発泡成形のクラツ
キング調整を上に述べた様な煩わしい方法でな
く、簡単に、しかも遠隔で操作できる方法を開発
し、提供するに至つたものである。"Means for Solving the Problems" In view of the above-mentioned circumstances, the inventor of the present invention has conducted extensive research to solve the above-mentioned problems, and has found that the cracking adjustment of in-mold foam molding is not the troublesome method described above. We have developed and provided a method that can be operated easily and remotely.
即ち、本発明は、固定金型と移動金型とからな
る金型内に合成樹脂の予備発泡ビーズを充填した
後、加熱融着させ発泡成形体を製造する発泡成形
機のクラツキングを調整するに際し、型閉移動時
の移動金型に設定した移動カムがリミツトスイツ
チを押した時から移動金型が停止（型閉）する迄
の距離（L1）を距離測定装置により計測させ、
該計測値（L1）をクラツキング巾設定装置に送
信し、次いでクラツキング巾設定装置に所定のク
ラツキング巾（Ｗ）を設定し、同装置内の演算装
置により移動金型が一旦停止する位置（L1）−
（Ｗ）を演算させ、固定金型から（L1）−（Ｗ）の
位置で前記移動金型の型閉移動を一旦停止させる
ことを特徴とする発泡成形機のクラツキング調整
法を内容とするものである。 That is, the present invention provides a method for adjusting the cracking of a foam molding machine that manufactures a foam molded article by filling pre-expanded beads of synthetic resin into a mold consisting of a fixed mold and a movable mold and then heating and fusing them. , a distance measuring device measures the distance (L 1 ) from when the moving cam set on the movable mold presses the limit switch until the movable mold stops (mold closing) during mold closing movement;
The measured value (L 1 ) is sent to the cracking width setting device, and then a predetermined cracking width (W) is set in the cracking width setting device, and a calculation device in the device determines the position (L 1 )−
(W) is calculated, and the closing movement of the movable mold is temporarily stopped at a position of (L 1 )-(W) from a fixed mold. It is something.
本発明の実施態様を示す図面に基づいて説明す
ると、第３図において、２１は固定金型、２２は
移動金型、２３は充填機、２４は油圧シリンダ
ー、２５は移動カム、２６はリミツトスイツチ、
２７は距離測定装置で型全閉までの距離（L1）
を計測し、その計測値（L1）を電気信号として
クラツキング巾設定装置２８に発信する。クラツ
キング巾設定装置２８は、距離測定装置２７が測
定した距離（L1）から予め設定した所定のクラ
ツキング巾（Ｗ）を控除する演算装置（図示せ
ず）を備えている。２９は固定ボルトで、リミツ
トスイツチ２６の固定位置を適宜変更させること
ができる。 To explain the embodiment of the present invention based on the drawings, in FIG. 3, 21 is a fixed mold, 22 is a movable mold, 23 is a filling machine, 24 is a hydraulic cylinder, 25 is a movable cam, 26 is a limit switch,
27 is a distance measuring device, which is the distance when the mold is fully closed (L 1 )
is measured, and the measured value (L 1 ) is transmitted to the cracking width setting device 28 as an electric signal. The cracking width setting device 28 includes an arithmetic device (not shown) that subtracts a predetermined cracking width (W) from the distance (L 1 ) measured by the distance measuring device 27. A fixing bolt 29 allows the fixing position of the limit switch 26 to be changed as appropriate.
上記の如き装置において、移動カム２５がリミ
ツトスイツイチ２６と押すと同時に距離測定装置
２７が計測を開始し、移動金型２２が停止（型
閉）するまでの距離（L1）を計測し、該計測値
を電気信号としてクラツキング巾設定装置２８に
送信する。 In the above device, the distance measuring device 27 starts measurement at the same time as the moving cam 25 presses the limit switch 26, and measures the distance (L 1 ) until the moving mold 22 stops (closes the mold). , and transmits the measured value as an electrical signal to the cracking width setting device 28.
一方、クラツキング巾設定装置２８でクラツキ
ング巾（Ｗ）を所定の値に設定すると、該装置２
８内の演算装置が働き（L1）−（Ｗ）、即ち、移動
金型２２が移動して停止する距離（L0）を演算
する。 On the other hand, when the cracking width setting device 28 sets the cracking width (W) to a predetermined value, the device 2
8 operates to calculate (L 1 ) - (W), that is, the distance (L 0 ) that the movable mold 22 moves and stops.
かくして、移動カム２５がリミツトスイツチ２
６を押してから移動金型２２は（L0）の距離だ
け型閉移動して停止し、所定のクラツキング巾
（Ｗ）を与える。 In this way, the moving cam 25 acts as the limit switch 2.
After pressing 6, the movable mold 22 moves to close the mold by a distance (L 0 ) and then stops, giving a predetermined cracking width (W).
この時、移動金型２２の移動速度が速いと、リ
ミツトスイツチ２６を押してから停止までの金型
移動距離のバラツキが大きくなるので、リミツト
スイツチを押した後は、金型移動速度は大巾にス
ローダウンさせるのがよい。金型移動速度はリミ
ツトスイツチ２６を押す前から、好ましくは直前
からスローダウンさせても良い。 At this time, if the moving speed of the movable mold 22 is fast, the dispersion in the distance the mold moves from when the limit switch 26 is pressed until it stops becomes large, so after pressing the limit switch, the mold moving speed will be significantly slowed down. It is better to let The mold moving speed may be slowed down before the limit switch 26 is pressed, preferably immediately before the limit switch 26 is pressed.
「実施例」
以下、実施例に基づき本発明を更に詳細に説明
するが、本発明はこれらにより何ら制限されるも
のではない。"Examples" The present invention will be described in more detail based on Examples below, but the present invention is not limited thereto.
実施例 １
東洋機械金属社製TF−300VM型成形機を改造
して、第３図に示した如き装置を作製した。Example 1 A TF-300VM molding machine manufactured by Toyo Kikai Kinzoku Co., Ltd. was modified to produce an apparatus as shown in FIG. 3.
移動金型２２を移動させ、移動カム２５がリミ
ツトスイツチ２６を押すと同時に、距離測定装置
２７が計測を開始し、移動金型２２と固定金型２
１が型閉した時の距離（L1）を20.0mmとデジタル
表示した。 When the movable mold 22 is moved and the movable cam 25 presses the limit switch 26, the distance measuring device 27 starts measuring, and the movable mold 22 and the fixed mold 2
The distance (L 1 ) when the mold was closed was digitally displayed as 20.0 mm.
次に、クラツキング巾設定装置２８の電源を入
れ、クラツキング巾（Ｗ）を5.0mmに設定した。
該クラツキング巾設定装置２８は距離測定装置２
７と連動されており、且つ演算装置を内蔵してお
り、（L1）−（Ｗ）（20.0mm−5.0mm）＝（L0）（15.0m
m）
を演算し、移動カム２５がリミツトスイツチ２６
を押してからの移動金型の型閉移動距離（L0）
は15.0mmであると表示した。実際に得られたクラ
ツキング巾（Ｗ）は5.2mmで実用上十分満足し得
るものであつた。 Next, the cracking width setting device 28 was turned on, and the cracking width (W) was set to 5.0 mm.
The cracking width setting device 28 is connected to the distance measuring device 2.
7 and has a built-in arithmetic unit, (L 1 ) - (W) (20.0mm - 5.0mm) = (L 0 ) (15.0m
m)
is calculated, and the moving cam 25 operates the limit switch 26.
Mold closing distance of the moving mold after pressing (L 0 )
was displayed as 15.0mm. The cracking width (W) actually obtained was 5.2 mm, which was sufficiently satisfactory for practical use.
「作用・効果」
上記の如く、本発明によれば、発泡成形機のク
ラツキング巾の調整は、クラツキング巾設定装置
のクラツキング巾設定値を変更するだけで任意の
寸法に設定でき、従来法の様に、１回毎に成形機
の側まで行つて、電源を切つて、移動カムの位置
を変えるという煩わしさがなくなり、成形品の目
付コントロール、充填性に起因する外観性の向上
等の対応が容易に行う事ができるもので、その有
用性は極めて大である。"Function/Effect" As described above, according to the present invention, the cracking width of the foam molding machine can be adjusted to any size by simply changing the cracking width setting value of the cracking width setting device, unlike the conventional method. This eliminates the hassle of having to go to the molding machine, turn off the power, and change the position of the moving cam every time, and it is possible to control the basis weight of molded products and improve the appearance due to filling properties. It is easy to do, and its usefulness is extremely large.
第１図Ａ〜Ｃは従来の発泡成形装置を示す概略
図、第２図は従来のクラツキング調整方法を示す
概略図、第３図は本発明のクラツキング調整法及
び装置の実施態様を示す概略図である。
２１……固定金型、２２……移動金型、２３…
…充填機、２４……油圧シリンダー、２５……移
動カム、２６……リミツトスイツチ、２７……距
離測定装置、２８……クラツキング巾設定装置、
２９……固定ボルト。
1A to 1C are schematic diagrams showing a conventional foam molding apparatus, FIG. 2 is a schematic diagram showing a conventional cracking adjustment method, and FIG. 3 is a schematic diagram showing an embodiment of the cracking adjustment method and apparatus of the present invention. It is. 21... fixed mold, 22... movable mold, 23...
... Filling machine, 24 ... Hydraulic cylinder, 25 ... Moving cam, 26 ... Limit switch, 27 ... Distance measuring device, 28 ... Cracking width setting device,
29...Fixing bolt.
Claims (1)
樹脂の予備発泡ビーズを充填した後、加熱融着さ
せ発泡成形体を製造する発泡成形機のクラツキン
グを調整するに際し、型閉移動時の移動金型に配
置した移動カムがリミツトスイツチを押した時か
ら移動金型が停止（型閉）する迄の距離（L1）
を距離測定装置により計測させ、該計測値（L1）
をクラツキング巾設定装置に送信し、次いでクラ
ツキング巾設定装置に所定のクラツキング巾
（Ｗ）を設定し、同装置内の演算装置により移動
金型が一旦停止する位置（L1）−（Ｗ）を演算さ
せ、固定金型から（L1）−（Ｗ）の位置で前記移
動金型の型閉移動を一旦停止させることを特徴と
する発泡成形機のクラツキング調整法。 ２ 移動金型に設置した移動カムがリミツトスイ
ツチを押す前又は同時に、型閉移動速度を減速さ
せる特許請求の範囲第１項記載の調整法。[Scope of Claims] 1. Adjusting the cracking of a foam molding machine that produces a foam molded product by filling pre-expanded beads of synthetic resin into a mold consisting of a fixed mold and a movable mold, and then heating and fusing the beads. In this case, the distance (L 1 ) from when the moving cam placed on the moving mold presses the limit switch until the moving mold stops (mold closing) when moving to close the mold.
is measured by a distance measuring device, and the measured value (L 1 )
is sent to the cracking width setting device, then a predetermined cracking width (W) is set in the cracking width setting device, and a calculation device in the device calculates the position (L 1 ) - (W) at which the moving mold will temporarily stop. A method for adjusting cracking in a foam molding machine, which comprises calculating and temporarily stopping the mold closing movement of the movable mold at a position (L 1 )-(W) from a fixed mold. 2. The adjustment method according to claim 1, wherein the mold closing movement speed is reduced before or at the same time as the moving cam installed in the moving mold presses the limit switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61095808A JPS62251124A (en) | 1986-04-24 | 1986-04-24 | Method and apparatus for adjustment of cracking in foam molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61095808A JPS62251124A (en) | 1986-04-24 | 1986-04-24 | Method and apparatus for adjustment of cracking in foam molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62251124A JPS62251124A (en) | 1987-10-31 |
| JPH045537B2 true JPH045537B2 (en) | 1992-01-31 |
Family
ID=14147723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61095808A Granted JPS62251124A (en) | 1986-04-24 | 1986-04-24 | Method and apparatus for adjustment of cracking in foam molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62251124A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8097192B2 (en) * | 2006-03-02 | 2012-01-17 | Daisen Industry Co., Ltd. | Foamed resin molding machine and method of operating the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310877B2 (en) * | 1972-02-24 | 1978-04-17 | ||
| JPS54144470A (en) * | 1978-05-02 | 1979-11-10 | Sekisui Plastics | Cracking control apparatus in expansion molding apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5821691Y2 (en) * | 1976-07-13 | 1983-05-09 | 東洋機械金属株式会社 | Cracking device for two-stage styrofoam molding machine |
-
1986
- 1986-04-24 JP JP61095808A patent/JPS62251124A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310877B2 (en) * | 1972-02-24 | 1978-04-17 | ||
| JPS54144470A (en) * | 1978-05-02 | 1979-11-10 | Sekisui Plastics | Cracking control apparatus in expansion molding apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62251124A (en) | 1987-10-31 |
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