JPH10202677A - Heating type foaming machine with mold of variable vertical interval - Google Patents

Heating type foaming machine with mold of variable vertical interval

Info

Publication number
JPH10202677A
JPH10202677A JP9012403A JP1240397A JPH10202677A JP H10202677 A JPH10202677 A JP H10202677A JP 9012403 A JP9012403 A JP 9012403A JP 1240397 A JP1240397 A JP 1240397A JP H10202677 A JPH10202677 A JP H10202677A
Authority
JP
Japan
Prior art keywords
mold
heating
foaming
foam
foaming 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.)
Pending
Application number
JP9012403A
Other languages
Japanese (ja)
Inventor
Isamu Nakano
勇 中野
Ikuo Kitagoya
育男 北小屋
Yoshio Miyano
善雄 宮野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanwa Kako Co Ltd
Original Assignee
Sanwa Kako Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanwa Kako Co Ltd filed Critical Sanwa Kako Co Ltd
Priority to JP9012403A priority Critical patent/JPH10202677A/en
Publication of JPH10202677A publication Critical patent/JPH10202677A/en
Pending legal-status Critical Current

Links

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To shorten the foaming time and eliminate the generation of unevenness in foaming by monitoring the sensor output at any time and issuing a movement instruction for restoring the sensor output to the desired value to a lifting and lowering movement device in the case the output is beyond the given value. SOLUTION: A pressure sensor 4 for sensing the foaming pressure of a foamed body by contacting is provided on either of an heating top mold 1 or a heating bottom mold 2, and either one of the heating top mold 1 or the heating bottom mold 2 is formed into a fixed mold, while the other is formed into a movable mold moving up and down by a lifting and lowering movement device 6 to provide a movable mold movement up and down freely. The sensor output of the pressure sensor 4 is monitored at any time by the monitoring of a CPU 7 and an instruction device, and when its output is beyond the given value, a movement instruction for restoring the sensor output to the desired value is issued to the lifting and lowering movement device 6. The foaming time is shortened and the generation of unevenness in foaming is eliminated by the arrangement to improve productivity.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ポリオレフィン発
泡体等の特に板状発泡体の製造装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing a plate-like foam such as a polyolefin foam.

【0002】[0002]

【従来の技術】ポリオレフィン発泡体等の板状発泡体の
製造装置は、従来種々のものが提案されている。例え
ば、本出願人の出願に係る特公平2−42649号公報
においては、ポリオレフィンの二段発泡法において、第
1工程で得られた中間一次発泡体を、第2工程におい
て、最終製品の形状、寸法に対応する断面形状、寸法を
有する密閉形式ではない金型に入れ、ジャケット方式の
蒸気加熱により発泡させる装置が記載されている。又、
同じく本出願人の出願に係る特公平6−22923号公
報においては、外表面にヒーター又は熱媒流路が設けら
れていると共にその下側が開口されている複数の箱状の
金型と、隣接する金型を上下に一定間隔で連接できるよ
うにその両端部に係止部が設けられている複数の吊り部
材と、最上部の金型に固着され昇降させるための昇降手
段と、金型を所定位置に係止するための留め具とからな
る発泡体の製造装置が記載されている。
2. Description of the Related Art Various apparatuses have been proposed for producing plate-like foams such as polyolefin foams. For example, in Japanese Patent Publication No. 2-42649 according to the present applicant's application, in the two-stage polyolefin foaming method, the intermediate primary foam obtained in the first step is subjected to a second step in which An apparatus is described in which a non-closed mold having a cross-sectional shape and dimensions corresponding to the dimensions is placed in a non-closed mold and foamed by jacket-type steam heating. or,
In Japanese Patent Publication No. Hei 6-22923 also filed by the present applicant, a plurality of box-shaped molds each having a heater or a heat medium flow path provided on the outer surface and having a lower side opened are provided. A plurality of suspending members provided with locking portions at both ends thereof so that the molds to be connected vertically can be connected at a constant interval, lifting means fixed to the uppermost mold for raising and lowering, and the mold An apparatus for producing a foam comprising a fastener for locking in place is described.

【0003】[0003]

【発明が解決しようとする課題】上記のような従来例
は、いずれにしろ中間一次発泡体を入れる金型の上下間
隔は最終製品の厚さにセッティングされており、このよ
うな金型に入れられ二次発泡される中間一次発泡体は二
次発泡前であるから、当然その上下厚さは金型の上下間
隔より小さく、下部金型の上面に載置されるのみで、そ
の上面は上部金型の下面とは間隔を有することとなる。
即ち、前記従来の製造装置では、中間一次発泡体の上面
に関しては空気を介して間接的に加熱する発泡装置であ
るといえ、熱伝達の速度と熱伝達の効率の両面で問題を
生じている。即ち、熱伝達の速度、効率が悪いと次のよ
うな問題が生じる。 1)加熱発泡に長時間を要することになるから生産性が
低い。 2)加熱のための熱源、例えば蒸気の使用量が多いこと
から経済性に劣る。 3)加熱発泡の長時間化は発泡体表面の無発泡層の発生
を増加させ、材料効率に劣る。 その他、従来の製造装置では中間一次発泡体の上面は間
接加熱であるため、上下面の不均一発泡を生じかねな
い。
In the prior art described above, in any case, the upper and lower spaces of the mold in which the intermediate primary foam is placed are set to the thickness of the final product. Since the intermediate primary foam to be secondary foamed is before secondary foaming, its upper and lower thickness is naturally smaller than the vertical spacing of the mold, and is only placed on the upper surface of the lower mold. There will be a gap with the lower surface of the mold.
In other words, in the conventional manufacturing apparatus, it can be said that the upper surface of the intermediate primary foam is a foaming apparatus that indirectly heats the upper surface of the intermediate primary foam through air, and causes a problem in both the heat transfer speed and the heat transfer efficiency. . That is, if the speed and efficiency of heat transfer are poor, the following problems occur. 1) Low productivity because long time is required for heating and foaming. 2) The use of a heat source for heating, for example, steam is large, so that the cost is poor. 3) Prolonged heat foaming increases the generation of a non-foamed layer on the foam surface, and is inferior in material efficiency. In addition, in the conventional manufacturing apparatus, since the upper surface of the intermediate primary foam is indirectly heated, uneven foaming of the upper and lower surfaces may occur.

【0004】従って、本発明の目的は上記の従来の製造
装置の欠点を解消し、発泡時間を短縮し、かつ、発泡に
ムラの生じない製造装置を提供することにある。
Accordingly, an object of the present invention is to solve the above-mentioned drawbacks of the conventional manufacturing apparatus, to shorten the foaming time, and to provide a manufacturing apparatus which does not cause uneven foaming.

【0005】[0005]

【課題を解決するための手段】本発明によれば、外表面
に加熱装置を備えた、下向きに開口した箱状の上側加熱
金型と、外表面に加熱装置を備えた下側加熱金型とから
なる発泡体の金型において、上記上側加熱金型と下側加
熱金型のいずれかに、発泡体の発泡圧を接触によって感
知するセンサーを設け、上記上側加熱金型と下側加熱金
型の一方を固定金型とし、他方を昇降動装置によって上
下動自在の移動金型とし、前記センサー出力を随時監視
して、その出力が一定値を越えた場合に前記センサー出
力が所望値に復帰するような関係の移動指令を前記昇降
動装置に指令する監視および指令装置を設けること、を
特徴とする上下間隔が可変の金型を有する加熱型発泡機
が提供される。更に本発明によれば、上側加熱金型と下
側加熱金型が上下方向に多段に配置された加熱発泡機も
提供される。
According to the present invention, a box-shaped upper heating mold having a downward opening and having a heating device on the outer surface, and a lower heating mold having a heating device on the outer surface are provided. In the foam mold comprising: a sensor for sensing the foaming pressure of the foam by contacting either the upper heating mold or the lower heating mold; and forming the upper heating mold and the lower heating mold. One of the molds is a fixed mold, and the other is a movable mold that can be moved up and down by a lifting and lowering device.The output of the sensor is monitored as needed, and when the output exceeds a predetermined value, the output of the sensor reaches a desired value. There is provided a heating type foaming machine having a mold with a variable vertical spacing, wherein a monitoring and commanding device for commanding a movement command related to return to the lifting / lowering device is provided. Further, according to the present invention, there is also provided a heating foaming machine in which an upper heating mold and a lower heating mold are arranged in multiple stages in the vertical direction.

【0006】[0006]

【作用および効果】本発明によれば、上側加熱金型およ
び下側加熱金型とも発泡体に一定圧で密接できる直接加
熱型の加熱発泡機が提供されることから生産性を高める
ことができるし、経済性についても改善することができ
る。多段の発泡機については、更に上記の点についての
効果が増すこととなる。
According to the present invention, a direct heating type heating and foaming machine capable of closely contacting the foam at a constant pressure with both the upper heating mold and the lower heating mold is provided, so that the productivity can be improved. In addition, economic efficiency can be improved. With respect to a multi-stage foaming machine, the effects in the above points are further increased.

【0007】[0007]

【発明の実施の形態】始めに本発明による発泡機の構造
を図1に基づいて説明する。この発泡機は、基本的には
スチームジャケット等の加熱手段を備えた上型加熱金型
1、下側加熱金型2、横側加熱金型3を含み、これらの
要素の存在は従来と変わりはない。本発明の発泡機の最
大特徴は、加熱発泡工程中に、上側加熱金型1と下側加
熱金型2の間隔を制御された関係で調整できるようにし
た点にある。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the structure of a foaming machine according to the present invention will be described with reference to FIG. The foaming machine basically includes an upper heating mold 1, a lower heating mold 2, and a lateral heating mold 3 provided with a heating means such as a steam jacket. There is no. The greatest feature of the foaming machine of the present invention is that the distance between the upper heating mold 1 and the lower heating mold 2 can be adjusted in a controlled relationship during the heating foaming process.

【0008】即ち、図1に示された例においては、上側
加熱金型1は横側加熱金型3と一体構造とされると共に
常時固定位置をなすように構成されている。一方、下側
加熱金型2はその下方に配された、例えば、スクリュー
ジャッキ、油圧シリンダ等の昇降動装置6を備えてお
り、中間1次発泡体の金型への配置時および発泡製品の
取出時に下側加熱金型2を昇降動させることができるの
みならず、以下に述べるように中間1次発泡体の2次発
泡進行時に制御された下降動が可能なようにされてい
る。つまり上側加熱金型1には接触式圧力センサー4が
設けられ、そのセンサー部は上側加熱金型1の下面と面
一をなすように配置される。この接触式圧力センサー4
はセンサー部が感知した圧力を電気信号の形にかえ、C
PU7に送る。CPU7はクロックに基づく設定された
時間間隔でのこの電気信号のチェックを繰り返す。
That is, in the example shown in FIG. 1, the upper heating mold 1 is integrally formed with the horizontal heating mold 3 and is always in a fixed position. On the other hand, the lower heating mold 2 is provided with an elevating / lowering device 6 such as a screw jack or a hydraulic cylinder disposed below the lower heating mold 2, so that the intermediate primary foam is placed in the mold and the foamed product is removed. Not only can the lower heating mold 2 be moved up and down at the time of unloading, but as described below, a controlled downward movement can be made during the progress of secondary foaming of the intermediate primary foam. That is, the contact pressure sensor 4 is provided in the upper heating mold 1, and the sensor unit is arranged so as to be flush with the lower surface of the upper heating mold 1. This contact type pressure sensor 4
Changes the pressure sensed by the sensor into an electrical signal,
Send to PU7. The CPU 7 repeatedly checks the electric signal at a set time interval based on the clock.

【0009】上記のような構成の上側加熱金型1と下側
加熱金型2において、当初下側加熱金型2が昇降動装置
6によって下降され、その上面に中間一次発泡体が載置
された後、下側加熱金型2が再び上昇され、中間一次発
泡体が上側加熱金型1の下面に接触する点で停止され
る。このような金型と中間一次発泡体の関係において、
スチームジャケットに基づく加熱による2次発泡が開始
される。2次発泡の進行と共に接触式圧力センサ4から
増大した電気信号がCPU7に送られる。CPU7は、
この電気信号が基準値内に収まっているかを逐次判断
し、基準値(例えば、0.25kgf/cm2 )を越え
た場合には、それに相応する指令値をテーブルから拾い
出し、昇降動装置6に送り、その指令値だけ下降動させ
る。昇降動装置6の下降動は下側加熱金型2を下降さ
せ、発泡しつつある中間一次発泡体と上側加熱金型1と
の間の接触圧を所定値に戻すこととなる。以下、二次発
泡が進行する程に上記の動作が繰り返され、発泡体に絶
えず一定範囲の圧力が保持されることとなる。
In the upper heating mold 1 and the lower heating mold 2 having the above-described structures, the lower heating mold 2 is first lowered by the lifting / lowering device 6, and the intermediate primary foam is placed on the upper surface thereof. After that, the lower heating mold 2 is raised again and stopped at the point where the intermediate primary foam comes into contact with the lower surface of the upper heating mold 1. In such a relationship between the mold and the intermediate primary foam,
Secondary foaming by heating based on the steam jacket is started. The electric signal increased from the contact pressure sensor 4 as the secondary foaming proceeds is sent to the CPU 7. CPU 7
It is sequentially determined whether or not the electric signal is within the reference value. If the electric signal exceeds the reference value (for example, 0.25 kgf / cm 2 ), the corresponding command value is picked up from the table, and the elevating device 6 is moved. And move it down by that command value. The downward movement of the lifting / lowering device 6 lowers the lower heating mold 2 and returns the contact pressure between the foaming intermediate primary foam and the upper heating mold 1 to a predetermined value. Hereinafter, as the secondary foaming proceeds, the above operation is repeated, and a constant range of pressure is constantly maintained in the foam.

【0010】上記のような発泡機において、昇降動自在
の金型は上側加熱金型1とし、下側加熱金型2を固定す
るようにしても得られる作用効果は全く同じであること
が理解されよう。上記のような発泡機は、多段に組み合
わせて、同時に多数の発泡体を得る装置とすることも可
能である。図2はスチームジャケット等、細部を省略し
たこのような多段発泡装置の基本的考え方を示してい
る。即ち、多数の上側加熱金型1を上下方向に等間隔を
なすよう配置し、それぞれ左右に、かつ前後方向に複数
本立設された固定支柱10,11に固定して支承させ
る。一方、多数の下側加熱金型3の下部にそれぞれ水平
の梁材12を固定し、これらの水平梁材12を前記固定
支柱10,11の前後方向間隙を通るようにして左右の
共通ピストン13,14に固定する。そして、これら左
右の共通ピストン13,14で、中間一次発泡体の配置
時および発泡製品の取り出し時に油圧シリンダ15,1
6,17,18等の駆動手段によって昇降させたり、中
間一次発泡体の発泡時に金型の接触圧力を一定にするた
めの下降動を行う。
In the above-described foaming machine, it is understood that the same effect can be obtained even if the mold that can move up and down is the upper heating mold 1 and the lower heating mold 2 is fixed. Let's do it. The foaming machines as described above can be combined in multiple stages to obtain a large number of foams at the same time. FIG. 2 shows the basic concept of such a multi-stage foaming apparatus in which details are omitted, such as a steam jacket. That is, a number of upper heating dies 1 are arranged at equal intervals in the up-down direction, and are fixed to and supported by a plurality of fixed columns 10, 11 erected in the left-right direction and in the front-rear direction. On the other hand, horizontal beam members 12 are fixed to the lower portions of a large number of lower heating molds 3, respectively. , 14. The left and right common pistons 13 and 14 use the hydraulic cylinders 15 and 1 when arranging the intermediate primary foam and taking out the foamed product.
6, 17, 18 and the like, it is moved up and down, and when the intermediate primary foam is foamed, it is moved down to keep the contact pressure of the mold constant.

【0011】以下に実施例を挙げて本発明についてさら
に具体的に説明するが、本発明は下記実施例に限定され
るものではない。
Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to the following examples.

【0012】実施例1(独立気泡体) 低密度ポリエチレン樹脂(商品名:三菱ポリエチLD
YF−30 MFR:1.1g/10min.密度:
0.920 三菱化学株式会社製)100重量部(以下
「部」と記載する)にアゾジカルボンアミド16部、亜
鉛華0.4部、ジクミルパーオキサイド0.5部をミキ
シングロールにて練和して得られた組成物を、190x
190x40tmmの加圧密閉金型中に充填し、100
kg/cm2 の外圧をかけて、150℃で35分間加熱
し、発泡剤および架橋剤を部分的に分解した後、除圧し
て中間一次発泡体を得た。中間一次発泡体は、厚み、
縦、横共に約1.6倍に膨脹していた。該一次発泡体
を、直ちに、本願発明の厚み可変式発泡機(600x6
00x最大厚み120tmm)内で2枚の鉄板の間に挟
持し、ジャケット方式により160℃の蒸気で加熱し
た。接触型圧力センサーとしては、株式会社ダイニスコ
社の商品であるダイニスコ樹脂圧力センサーを用いた。
最初の厚みは72mmで、加熱開始後5分で発泡機の底
板が低下し始め、17分で最終厚みになり、19分で加
熱を終了し、冷却取り出し、均一微細な気泡を有した架
橋ポリエチレン発泡体を得た。得られた発泡体は、みか
け密度0.03g/cm3 であった。加熱時間に対す
る、一定発泡圧を維持するための上側加熱金型と下側加
熱金型の間隔(発泡体の厚みに相当)の変位は図3のよ
うな曲線をなすことが確認された。 比較例1 実施例1において、実施例1と同じ配合および方法で中
間一次発泡体を得、従来方式のジャケット式発泡機(6
00x600x120tmm)に入れて間接的に160
℃の蒸気で25分加熱し、実施例1と同じ発泡体を得
た。第2工程での発泡時間の差は6分であった。
Example 1 (closed cell) Low density polyethylene resin (trade name: Mitsubishi Polyethylene LD)
YF-30 MFR: 1.1 g / 10 min. density:
0.920 (manufactured by Mitsubishi Chemical Corporation) 100 parts by weight (hereinafter referred to as "parts") were mixed with 16 parts of azodicarbonamide, 0.4 part of zinc white and 0.5 part of dicumyl peroxide with a mixing roll. The composition obtained by 190x
Fill into a 190 × 40 tmm pressure sealed mold,
After applying an external pressure of kg / cm 2 and heating at 150 ° C. for 35 minutes to partially decompose the foaming agent and the crosslinking agent, the pressure was removed to obtain an intermediate primary foam. The intermediate primary foam has a thickness,
It had expanded about 1.6 times both vertically and horizontally. The primary foam is immediately transferred to the variable thickness foaming machine (600 × 6) of the present invention.
(00x maximum thickness of 120 tmm) and sandwiched between two iron plates, and heated with steam at 160 ° C by a jacket method. As a contact type pressure sensor, a Dainisco resin pressure sensor, a product of Dainisco Co., Ltd., was used.
The initial thickness is 72 mm, the bottom plate of the foaming machine starts to drop in 5 minutes after the start of heating, reaches the final thickness in 17 minutes, finishes heating in 19 minutes, cools out, cross-linked polyethylene with uniform fine bubbles A foam was obtained. The foam obtained had an apparent density of 0.03 g / cm 3 . It was confirmed that the displacement of the distance (corresponding to the thickness of the foam) between the upper heating mold and the lower heating mold for maintaining a constant foaming pressure with respect to the heating time forms a curve as shown in FIG. Comparative Example 1 In Example 1, an intermediate primary foam was obtained by the same composition and method as in Example 1, and a conventional jacket-type foaming machine (6
00x600x120tmm) and indirectly 160
The mixture was heated with steam at 25 ° C. for 25 minutes to obtain the same foam as in Example 1. The difference in the foaming time in the second step was 6 minutes.

【0013】実施例2 エチレン酢酸ビニル共重合体(商品名:EVA41H、
酢酸ビニル含有量16%、三菱化学株式会社製)100
部、アゾジカルボンアミド19部、活性亜鉛華0.02
部、ステアリン酸亜鉛0.04部、尿素0.01部、ジ
クミルパーオキサイド0.6部を配合混練し、135℃
に加熱されたプレス内の金型(190x190x40t
mm)に充填し、40分間加圧下で加熱し、発泡性架橋
性シートを整形した。次いで、得られた発泡性架橋性シ
ートを実施例1と同様の本発明の厚み可変式発泡機(前
述)の2枚の鉄板間に挟持し、ジャケット式で160℃
の蒸気で加熱した。最初の厚みは40mmで、加熱開始
後30分で底板が下降し始め、73分で最終厚みにな
り、75分で加熱を終了した。冷却取り出し、薄膜気泡
を有する発泡体を得た。得られた発泡体を、ロール間隔
5mmに設定した等速2本ロールの間を数回通過させ、
気泡膜を破壊し気泡の連通化を行い、連続気泡体を得
た。得られた連続気泡体は、連続気泡率100%、みか
け密度0.03g/cm3 であり、表皮層の薄いもので
あった。加熱時間に対する、一定発泡圧を維持するため
の上側加熱金型と下側加熱金型の間隔(発泡体の厚みに
相当)の変位は図4のような曲線をなすことが確認され
た。 比較例2 実施例2と同じ配合および同じ方法で、発泡性架橋性シ
ートを得、比較例1と同じ従来式の発泡機内に入れて1
60℃加熱した所105分で発泡が終了した。発泡時間
の差は30分であった。得られた発泡体を実施例2と同
じ方法で気泡を連通化し、連続気泡体を得た。得られた
連続気泡体は、連続気泡率100%、みかけ密度0.0
3g/cm3 であり、表皮層の厚いものであった。
Example 2 Ethylene vinyl acetate copolymer (trade name: EVA41H,
Vinyl acetate content 16%, manufactured by Mitsubishi Chemical Corporation) 100
Parts, azodicarbonamide 19 parts, activated zinc white 0.02
Parts, 0.04 part of zinc stearate, 0.01 part of urea, and 0.6 part of dicumyl peroxide.
(190x190x40t)
mm) and heated under pressure for 40 minutes to shape the foamable crosslinkable sheet. Next, the obtained foamable crosslinkable sheet was sandwiched between two iron plates of a variable thickness foaming machine (described above) of the present invention similar to that of Example 1, and was heated at 160 ° C. by a jacket type.
With steam. The initial thickness was 40 mm, and the bottom plate started to descend 30 minutes after the start of heating, reached the final thickness in 73 minutes, and finished heating in 75 minutes. After cooling, a foam having thin film cells was obtained. The obtained foam is passed several times between two constant-velocity rolls set at a roll interval of 5 mm,
The cell membrane was broken and the cells were communicated to obtain an open cell. The obtained open cell had an open cell ratio of 100%, an apparent density of 0.03 g / cm 3 , and a thin skin layer. It was confirmed that the displacement of the distance (corresponding to the thickness of the foam) between the upper heating mold and the lower heating mold for maintaining a constant foaming pressure with respect to the heating time forms a curve as shown in FIG. Comparative Example 2 An expandable crosslinkable sheet was obtained by the same composition and in the same manner as in Example 2, and was placed in the same conventional foaming machine as in Comparative Example 1 to obtain 1 sheet.
Foaming was completed 105 minutes after heating at 60 ° C. The difference in foaming time was 30 minutes. In the obtained foam, cells were communicated in the same manner as in Example 2 to obtain an open cell. The obtained open cell had an open cell ratio of 100% and an apparent density of 0.0
It was 3 g / cm 3 and the skin layer was thick.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明による単段の金型を有する加熱型発泡機
である。
FIG. 1 is a heating type foaming machine having a single-stage mold according to the present invention.

【図2】本発明による多段の金型を有する加熱型発泡機
である。
FIG. 2 is a heating type foaming machine having a multi-stage mold according to the present invention.

【図3】独立気泡体の場合の加熱時間と、調整された上
下加熱金型の間隔を示す曲線である。
FIG. 3 is a curve showing the heating time in the case of a closed cell and the distance between the adjusted upper and lower heating dies.

【図4】連続気泡体の場合の加熱時間と、調整された上
下加熱金型の間隔を示す曲線である。
FIG. 4 is a curve showing the heating time in the case of an open-cell foam and the distance between the adjusted upper and lower heating dies.

【符号の説明】[Explanation of symbols]

1…上側加熱金型、2…下側加熱金型、3…横側加熱金
型、4…接触式圧力センサー、5…熱交換器、6…昇降
動装置、7…CPU、10,11…固定支柱、12…水
平梁材、13,14…共通ピストン、15,16,1
7,18…油圧シリンダ。
DESCRIPTION OF SYMBOLS 1 ... Upper heating mold, 2 ... Lower heating mold, 3 ... Side heating mold, 4 ... Contact pressure sensor, 5 ... Heat exchanger, 6 ... Elevating device, 7 ... CPU, 10, 11 ... Fixed pillar, 12 ... horizontal beam material, 13, 14 ... common piston, 15, 16, 1
7, 18 ... Hydraulic cylinder.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI B29L 7:00 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI B29L 7:00

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 外表面に加熱装置を備えた、下向きに開
口した箱状の上側加熱金型と、外表面に加熱装置を備え
た下側加熱金型とからなる発泡体の金型において、 上記上側加熱金型と下側加熱金型のいずれかに、発泡体
の発泡圧を接触によって感知するセンサーを設け、 上記上側加熱金型と下側加熱金型の一方を固定金型と
し、他方を昇降動装置によって上下動自在の移動金型と
し、 前記センサー出力を随時監視して、その出力が一定値を
越えた場合に前記センサー出力が所望値に復帰するよう
な関係の移動指令を前記昇降動装置に指令する監視およ
び指令装置を設けること、 を特徴とする上下間隔が可変の金型を有する加熱型発泡
機。
1. A foam mold comprising a box-shaped upper heating mold having a heating device provided on an outer surface thereof and having a box shape opening downward, and a lower heating mold having a heating device provided on an outer surface thereof. Either the upper heating mold or the lower heating mold is provided with a sensor for sensing the foaming pressure of the foam by contact, and one of the upper heating mold and the lower heating mold is a fixed mold, and the other is Is a movable mold that can be moved up and down by a lifting and lowering device, and the sensor output is monitored as needed, and when the output exceeds a predetermined value, a movement command having a relation such that the sensor output returns to a desired value is issued. A heating-type foaming machine having a mold with a variable vertical spacing, comprising a monitoring and commanding device for commanding a lifting / lowering device.
【請求項2】 前記上側加熱装置と下側加熱装置の組み
合わせが上下方向に多段に配置され、上下動自在の移動
金型については、共通の昇降動装置に連絡されているこ
とを特徴とする請求項1記載の加熱型発泡機。
2. The combination of the upper heating device and the lower heating device is arranged in multiple stages in the vertical direction, and a movable mold that can move up and down is connected to a common elevating device. The heating type foaming machine according to claim 1.
JP9012403A 1997-01-27 1997-01-27 Heating type foaming machine with mold of variable vertical interval Pending JPH10202677A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9012403A JPH10202677A (en) 1997-01-27 1997-01-27 Heating type foaming machine with mold of variable vertical interval

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9012403A JPH10202677A (en) 1997-01-27 1997-01-27 Heating type foaming machine with mold of variable vertical interval

Publications (1)

Publication Number Publication Date
JPH10202677A true JPH10202677A (en) 1998-08-04

Family

ID=11804303

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9012403A Pending JPH10202677A (en) 1997-01-27 1997-01-27 Heating type foaming machine with mold of variable vertical interval

Country Status (1)

Country Link
JP (1) JPH10202677A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104002412A (en) * 2014-05-14 2014-08-27 安徽中意胶带有限责任公司 Macromolecular elastomer pouring curing bed with hot oil carrier circulating heating
JP2015066795A (en) * 2013-09-28 2015-04-13 三和化工株式会社 Electric heating type block foam manufacturing apparatus
WO2015174147A1 (en) * 2014-05-13 2015-11-19 株式会社日立製作所 Method for manufacturing composite material structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015066795A (en) * 2013-09-28 2015-04-13 三和化工株式会社 Electric heating type block foam manufacturing apparatus
WO2015174147A1 (en) * 2014-05-13 2015-11-19 株式会社日立製作所 Method for manufacturing composite material structure
CN104002412A (en) * 2014-05-14 2014-08-27 安徽中意胶带有限责任公司 Macromolecular elastomer pouring curing bed with hot oil carrier circulating heating

Similar Documents

Publication Publication Date Title
US3812225A (en) Method of manufacturing foamed crosslinked polyolefin slabs involving multiple expansion techniques and direct gas pressure
US2899708A (en) Modification and control of plastic
US3818086A (en) Production of expanded ethylene polymers
US4671910A (en) Process for the production of closed-cell foam molded articles of crosslinked polyolefin
JPH10202677A (en) Heating type foaming machine with mold of variable vertical interval
JPS61143116A (en) Manufacture of molded sheet
JPH09104025A (en) Press molding method for thermoplastic resin
JPH11245928A (en) Food container
JP3178897B2 (en) Two-stage foam molding method and apparatus
JP3272779B2 (en) Method for producing polyolefin plate-like foam
JPS6221525A (en) Manufacture of polyolefin foam
US3339006A (en) Method of thermoforming foamed plastic articles
JPH0222031A (en) Vacuum molding of both sides of laminated sheet
JPH0367613B2 (en)
JP3399864B2 (en) Recycled molded article of cross-linked polyethylene-based open cell scrap material and regenerated molding method
JP2562102B2 (en) Method for producing polyolefin foam
JPH0639855A (en) Two-stage foaming method and apparatus
JPS59152827A (en) Manufacture of foamed body
JP2869475B2 (en) Method for producing polyolefin foam
JPH0948035A (en) Molding method for crosslinked polyethylene open-cell foam
JPH06126851A (en) Production of polyolefin foam
JPH074825B2 (en) Molding method for automobile decorative mold
JP2011148305A (en) Method for producing molded body
JPH02196638A (en) Manufacture of crosslinked polyolefin continuous foamed material
JPS6050134B2 (en) Thick plate manufacturing method