JPS6310263Y2 - - Google Patents
Info
- Publication number
- JPS6310263Y2 JPS6310263Y2 JP9549583U JP9549583U JPS6310263Y2 JP S6310263 Y2 JPS6310263 Y2 JP S6310263Y2 JP 9549583 U JP9549583 U JP 9549583U JP 9549583 U JP9549583 U JP 9549583U JP S6310263 Y2 JPS6310263 Y2 JP S6310263Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder body
- metal fitting
- outer peripheral
- annular metal
- peripheral surface
- 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
Links
- 239000002184 metal Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000012809 cooling fluid Substances 0.000 claims description 6
- 238000010137 moulding (plastic) Methods 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 description 10
- 229920003023 plastic Polymers 0.000 description 10
- 238000001816 cooling Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 5
- 239000002994 raw material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Resistance Heating (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案はプラスチツクの押出成形機や射出成形
機のようなプラスチツクの加熱用シリンダを備え
たプラスチツク成形機における加熱シリンダ装置
に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a heating cylinder device for a plastic molding machine equipped with a plastic heating cylinder, such as a plastic extrusion molding machine or an injection molding machine.
（従来技術）
プラスチツクの押出成形機や射出成形機のよう
なプラスチツク加熱用のシリンダを備えたプラス
チツク成形機には加熱用のヒータの外にシリンダ
を冷却する冷却機構を組み込んでシリンダの温度
を任意に調節できるようにしておくことが好まし
いが、従来の冷却機構としてはシリンダの内部或
いは外周に冷却媒体通路を設けたものを普通とす
るものでシリンダに冷却媒体通路を付加する必要
があり、製作に手数を要するうえに冷却装置が大
がかりとなつて装置自体が高価となる欠点があ
る。(Prior art) A plastic molding machine equipped with a cylinder for heating plastic, such as a plastic extrusion molding machine or an injection molding machine, incorporates a cooling mechanism to cool the cylinder in addition to the heater for heating, so that the temperature of the cylinder can be adjusted arbitrarily. However, conventional cooling mechanisms usually have a cooling medium passage inside or on the outer periphery of the cylinder, and it is necessary to add a cooling medium passage to the cylinder, making it difficult to manufacture. This has the drawback that it requires a lot of effort and the cooling device is large-scale, making the device itself expensive.
（考案の目的）
本考案は前記のような欠点を除いてシリンダの
加熱および冷却を適確容易に行うことができる構
造が簡単なプラスチツク成形機における加熱シリ
ンダ装置を目的として完成されたものである。(Purpose of the invention) The present invention was completed with the aim of providing a heating cylinder device for a plastic molding machine that has a simple structure and is capable of accurately and easily heating and cooling the cylinder, excluding the above-mentioned drawbacks. .
（考案の構成）
本考案は管壁に多数の噴射孔を配設した中空管
材よりなる環状金具をシリンダ本体の外周面に所
要の間隔をおいて巻装して該環状金具内を冷却流
体供給源に連通させるとともに該環状金具には前
記シリンダ本体の外周面との間に空間部を形成す
る反射板を取付け、また、該空間部内において前
記反射板には多数の赤外線輻射ヒータをその輻射
面が前記シリンダ本体の外周面と対向するように
配設したことを特徴とするものである。(Structure of the invention) The present invention involves winding an annular fitting made of a hollow tube material with a large number of injection holes in the tube wall at required intervals around the outer peripheral surface of the cylinder body, and supplying cooling fluid inside the annular fitting. A reflecting plate is attached to the annular metal fitting to communicate with the source and to form a space between it and the outer peripheral surface of the cylinder body, and within the space, a large number of infrared radiant heaters are mounted on the reflecting plate on its radiating surface. is arranged so as to face the outer circumferential surface of the cylinder body.
（実施例）
次に、本考案を図示の実施例について詳細に説
明すれば、１は一端に粉状またはペレツト状のプ
ラスチツクを収容するホツパー２を設けるととも
に他端にプラスチツク成形用のノズル３を設けた
シリンダ本体であつて、該シリンダ本体１内には
プラスチツク混練用のスクリユー軸４が収納され
ている。５はシリンダ本体１の外周面に所要の間
隔をおいて複数個巻装される環状金具であつて、
各環状金具５は管壁に多数の噴射孔６を配設した
鋼管等の中空管材よりなる半円弧状の２つの分割
部材５ａ、５ａの両端に開口を密閉するように取
付片５ｂ、５ｂを取付けるとともに各分割部材５
ａにナツト付スタツド１６と該分割部材５ａ内を
冷却流体供給源に連通させる導入管７を取付けた
もので、取付片５ｂ、５ｂを突き合せた状態でシ
リンダ本体１に巻装されるようになつている。８
はシリンダ本体１の外周面との間に所要の空間部
９を形成するように前記環状金具５に取付けられ
る反射板であつて、該反射板８はステンレス鋼板
やアルミナイズ処理が施こされた鋼板等の耐蝕
性、耐熱性および赤外線反射率に優れた材料より
なる断面が多角形状のもので、２分割できるよう
になつている。そして、、前記空間部９内におい
て反射板８にはヒータ取付孔が所要間隔をおいて
多数均斉に配設されていて各ヒータ取付孔には盤
状セラミツク体に金属抵抗発熱体を埋設した赤外
線輻射ヒータ１０がその輻射面１０ａを前記シリ
ンダ本体１の外周面と対向するように取付基部１
０ｂをもつて取付けられている。なお、シリンダ
本体１が均一に加熱されるように赤外線輻射ヒー
タ１０の輻射面１０ａはシリンダ本体１に対して
一定の距離をおくとともに赤外線輻射ヒータ１０
の背面と反射板８の内周面との間には赤外線輻射
ヒータ１０の非輻射面からの輻射熱が対流し、か
つ赤外線が反射される程度の間隔を設ける。ま
た、この赤外線輻射ヒータ１０の反射板８への取
付けは取付基部１０ｂの両側に設けた溝にピン等
を挿入することにより行なうものとし、さらに、
該反射板８の両端はＬ字形に屈曲させてこれにシ
リンダ本体１の外径より若干大きい内径とした環
状の端板１１、１１を各々ビス等で固定し、該端
板１１、１１の内縁とシリンダ本体１の外周面と
の間には排気用の間隙１２を設けてある。なお、
図中１３は反射板８からの輻射および対流による
熱放散を防止するために外筒１４と反射板８間に
装填される無機繊維等の断熱材である。(Embodiment) Next, the present invention will be described in detail with reference to the illustrated embodiment. 1 is provided with a hopper 2 for accommodating powdered or pelleted plastic at one end, and a nozzle 3 for molding the plastic at the other end. A screw shaft 4 for kneading plastics is accommodated in the cylinder body 1. Reference numeral 5 denotes a plurality of annular metal fittings that are wound around the outer peripheral surface of the cylinder body 1 at required intervals,
Each annular fitting 5 has mounting pieces 5b, 5b attached to both ends of two semicircular arc-shaped divided members 5a, 5a made of a hollow tube material such as a steel pipe with a large number of injection holes 6 arranged in the tube wall, so as to seal the opening. At the same time as installing each divided member 5
A stud 16 with a nut and an introduction pipe 7 for communicating the inside of the divided member 5a with a cooling fluid supply source are attached to the cylinder body 1, and the cylinder body 1 is wound around the cylinder body 1 with the mounting pieces 5b and 5b abutted against each other. It's summery. 8
is a reflective plate attached to the annular metal fitting 5 so as to form a required space 9 between it and the outer peripheral surface of the cylinder body 1, and the reflective plate 8 is made of a stainless steel plate or aluminized. It is made of a material with excellent corrosion resistance, heat resistance, and infrared reflectance, such as a steel plate, and has a polygonal cross section, so that it can be divided into two parts. In the space 9, a large number of heater mounting holes are uniformly arranged in the reflector plate 8 at required intervals, and each heater mounting hole has an infrared ray having a metal resistance heating element embedded in a plate-shaped ceramic body. The radiant heater 10 is mounted on the mounting base 1 so that its radiant surface 10a faces the outer circumferential surface of the cylinder body 1.
It is attached with 0b. Note that in order to uniformly heat the cylinder body 1, the radiation surface 10a of the infrared radiant heater 10 is placed at a certain distance from the cylinder body 1, and the infrared radiant heater 10
A gap is provided between the back surface of the reflector plate 8 and the inner circumferential surface of the reflector plate 8 such that the radiant heat from the non-radiating surface of the infrared radiant heater 10 is convected and the infrared rays are reflected. The infrared radiant heater 10 is attached to the reflector plate 8 by inserting pins or the like into grooves provided on both sides of the attachment base 10b.
Both ends of the reflecting plate 8 are bent into an L-shape, and annular end plates 11, 11 each having an inner diameter slightly larger than the outer diameter of the cylinder body 1 are fixed thereto with screws, etc., and the inner edges of the end plates 11, 11 are An exhaust gap 12 is provided between the cylinder body 1 and the outer peripheral surface of the cylinder body 1. In addition,
In the figure, reference numeral 13 denotes a heat insulating material such as inorganic fiber loaded between the outer cylinder 14 and the reflector 8 in order to prevent heat dissipation from the reflector 8 by radiation and convection.
このように構成されたものは、シリンダ本体１
の外周面に対向するよう配設されている赤外線輻
射ヒータ１０に通電すれば、各赤外線輻射ヒータ
１０はシリンダ本体１の外周面に所要の間隔をお
いて巻装されている環状金具５に取付けられた反
射板８に輻射面１０ａがシリンダ本体１の外周面
に可及的に近接して配設されているのでシリンダ
本体１は均等に加熱されて所要の設定温度まで加
熱されることとなるから、この状態でシリンダ本
体１内にホツパー２から粉状または粒状のプラス
チツク原料を落下させてスクリユー軸４を回転さ
せれば、ノズル３の先端からプラスチツク原料が
溶融射出されることとなるが、生産調整等により
種類の異なるプラスチツク原料を交換して短時間
のうちにシリンダ本体１所要設定温度を降下させ
る場合その他急速にシリンダ本体１の温度を低下
させたい場合には、反射板８を取付けている環状
金具５が中空管材よりなるものでしかも管壁に噴
射孔６が多数配設されているものであるから、空
気送入パイプ１５を介して高圧ブロアー等の冷却
流体供給源より供給して圧縮冷気流を噴射孔６か
ら放出すれば、前記赤外線輻射ヒータ１０が空間
部９内にあるので、圧縮冷気流はシリンダ本体１
および赤外線輻射ヒータ１０を急速に冷却して空
間部９の内縁とシリンダ本体１の外周面との間隙
１２より放出されることとなり、シリンダ本体１
は急激に降温して冷却機構を有しないものの自然
冷却時間の約1/2で所要温度まで降下することが
できる。しかも、この冷却機能を有する環状金具
５は前記したように反射板８の支持部材を冷却機
構取付けのためのスペースは必要ない。 In this structure, the cylinder body 1
When the infrared radiant heaters 10 arranged so as to face the outer circumferential surface of the cylinder body 1 are energized, each infrared radiant heater 10 is attached to the annular metal fitting 5 wrapped around the outer circumferential surface of the cylinder body 1 at a required interval. Since the radiation surface 10a of the reflective plate 8 is arranged as close as possible to the outer peripheral surface of the cylinder body 1, the cylinder body 1 is heated evenly to the required set temperature. Therefore, if powdered or granular plastic raw material is dropped from the hopper 2 into the cylinder body 1 in this state and the screw shaft 4 is rotated, the plastic raw material will be melted and injected from the tip of the nozzle 3. When reducing the set temperature of the cylinder body 1 in a short time by exchanging different types of plastic raw materials due to production adjustments, etc., or when it is desired to rapidly lower the temperature of the cylinder body 1, the reflector plate 8 is attached. Since the annular metal fitting 5 is made of a hollow tube material and has a large number of injection holes 6 arranged in the tube wall, the cooling fluid is supplied from a cooling fluid supply source such as a high-pressure blower through the air supply pipe 15. When the compressed cold air stream is emitted from the injection hole 6, since the infrared radiant heater 10 is in the space 9, the compressed cold air stream is emitted from the cylinder body 1.
The infrared radiant heater 10 is rapidly cooled and emitted from the gap 12 between the inner edge of the space 9 and the outer peripheral surface of the cylinder body 1.
Although it has no cooling mechanism, it can drop to the required temperature in about 1/2 of the natural cooling time. Furthermore, the annular metal fitting 5 having a cooling function does not require a space for mounting the cooling mechanism for the supporting member of the reflecting plate 8 as described above.
（考案の効果）
本考案は以上の説明によつて明らかなように、
シリンダ本体の外周面に多数の噴射孔が配設され
た中空管材よりなる環状金具を巻装してこれに反
射板を取付け、この反射板に赤外線輻射ヒータを
配設したので、シリンダ本体の加熱を効率的に行
うことができるのみならず環状金具を冷却流体供
給源に接続させてシリンダ本体の急冷をも行える
ようにすることができ、特別に冷却機構を付設す
る必要もないので構造が簡単でコンパクトな設計
ができる利点と相俟ち在来のプラスチツク成形機
における加熱シリンダ装置の欠点をなくしたもの
として実用的価値極めて大なものである。(Effects of the invention) As is clear from the above explanation, the invention has the following effects:
An annular metal fitting made of a hollow tube with many injection holes is wrapped around the outer circumferential surface of the cylinder body, a reflective plate is attached to this, and an infrared radiant heater is installed on this reflective plate to heat the cylinder body. Not only can this be done efficiently, but the cylinder body can also be rapidly cooled by connecting the annular metal fitting to a cooling fluid supply source, and there is no need to install a special cooling mechanism, so the structure is simple. This combination of the advantage of compact design and the fact that it eliminates the drawbacks of the heating cylinder device in conventional plastic molding machines has extremely great practical value.
第１図は本考案の実施例を示す一部切欠正面
図、第２図は同じく一部切欠側面図である。
１……シリンダ本体、５……環状金具、６……
噴射孔、８……反射板、９……空間部、１０……
赤外線輻射ヒータ、１０ａ……輻射面。
FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a partially cutaway side view. 1... Cylinder body, 5... Annular metal fitting, 6...
Injection hole, 8...Reflector, 9...Space, 10...
Infrared radiation heater, 10a...radiation surface.
Claims (1)
なる環状金具５をシリンダ本体１の外周面に所要
の間隔をおいて巻装して該環状金具５内を冷却流
体供給源に連通させるとともに該環状金具５には
前記シリンダ本体１の外周面との間に空間部９を
形成する反射板８を取付け、また、該空間部９内
において前記反射板８には多数の赤外線輻射ヒー
タ１０をその輻射面１０ａが前記シリンダ本体１
の外周面と対向するように配設したことを特徴と
するプラスチツク成形機における加熱シリンダ装
置。 An annular metal fitting 5 made of a hollow tube material with a large number of injection holes 6 arranged in the tube wall is wrapped around the outer peripheral surface of the cylinder body 1 at a required interval, and the inside of the annular metal fitting 5 is communicated with a cooling fluid supply source. At the same time, a reflection plate 8 is attached to the annular metal fitting 5 to form a space 9 between it and the outer peripheral surface of the cylinder body 1, and a large number of infrared radiant heaters 10 are attached to the reflection plate 8 within the space 9. The radiation surface 10a is the cylinder body 1
A heating cylinder device for a plastic molding machine, characterized in that the heating cylinder device is arranged so as to face the outer peripheral surface of the plastic molding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9549583U JPS603016U (en) | 1983-06-20 | 1983-06-20 | Heating cylinder device in plastic molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9549583U JPS603016U (en) | 1983-06-20 | 1983-06-20 | Heating cylinder device in plastic molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS603016U JPS603016U (en) | 1985-01-10 |
| JPS6310263Y2 true JPS6310263Y2 (en) | 1988-03-28 |
Family
ID=30228024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9549583U Granted JPS603016U (en) | 1983-06-20 | 1983-06-20 | Heating cylinder device in plastic molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603016U (en) |
-
1983
- 1983-06-20 JP JP9549583U patent/JPS603016U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS603016U (en) | 1985-01-10 |
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