JPH0585614U - Round hopper for injection molding machines - Google Patents
Round hopper for injection molding machinesInfo
- Publication number
- JPH0585614U JPH0585614U JP3913491U JP3913491U JPH0585614U JP H0585614 U JPH0585614 U JP H0585614U JP 3913491 U JP3913491 U JP 3913491U JP 3913491 U JP3913491 U JP 3913491U JP H0585614 U JPH0585614 U JP H0585614U
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- gas discharge
- hopper
- hopper body
- gas
- 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
- 238000001746 injection moulding Methods 0.000 title claims description 9
- 239000002994 raw material Substances 0.000 claims abstract description 56
- 239000007789 gas Substances 0.000 abstract description 58
- 239000011261 inert gas Substances 0.000 abstract description 17
- 238000007664 blowing Methods 0.000 abstract description 5
- 238000007872 degassing Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 19
- 229920005989 resin Polymers 0.000 description 19
- 239000011347 resin Substances 0.000 description 19
- 238000010438 heat treatment Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
(57)【要約】
【目的】 原料の供給が均一となり、原料の可塑化に伴
う発生ガスの脱気が円滑に行なわれ、不活性ガスの吹込
みによる原料中の空気と不活性ガス雰囲気との置換効率
が向上し、構造が簡単でコストが低減する丸形ホッパー
を提供すること。
【構成】 ホッパー本体１１の円錐形の底部１１ｂに原
料落下部１２を設け、該原料落下部１２にガス導入口１
３を備え、ホッパー本体１１内にガス排出筒１４を、ガ
ス排出筒１４の外周下端とホッパー本体１１の底部１１
ｂの内面との間に間隙１６を設けて、間隙１６により、
ガス排出筒１４の内部のガス排出室１５とホッパー本体
１１内の原料供給室１７とが連通するように、略直立状
に設ける。
(57) [Summary] [Purpose] The supply of the raw material becomes uniform, the degassing of the generated gas accompanying the plasticization of the raw material is performed smoothly, and the air in the raw material and the inert gas atmosphere due to the blowing of the inert gas become To provide a round hopper with improved replacement efficiency, simple structure and reduced cost. [Structure] A raw material dropping part 12 is provided on a conical bottom portion 11b of a hopper body 11, and the gas introducing port 1 is provided in the raw material dropping part 12.
3, the gas discharge cylinder 14 is provided in the hopper body 11, the lower end of the outer circumference of the gas discharge cylinder 14 and the bottom portion 11 of the hopper body 11.
By providing a gap 16 between the inner surface of b and the gap 16,
The gas discharge chamber 15 inside the gas discharge cylinder 14 and the raw material supply chamber 17 inside the hopper body 11 are provided in a substantially upright shape so as to communicate with each other.
Description
【０００１】[0001]
本考案は、ガス排出筒を設けた射出成形機等の丸形ホッパーに関する。 The present invention relates to a round hopper such as an injection molding machine provided with a gas discharge tube.
【０００２】[0002]
一般に、射出成形機において加熱シリンダの中に樹脂材料を送給する際に、こ の樹脂材料に空気が混入すると、上記加熱シリンダ内や金型内で樹脂材料が酸化 して劣化するおそれがある。そこで、従来、図８に示す、実公昭５８ー２５７６ 号公報に記載のホッパーに見られるように、原料供給室１と、ガス排出室２とが 仕切板３により仕切られ、狭小部４ａで連通するように構成された角形のホッパ ー４の下部のガス導入口５より、このホッパー４内に不活性ガスを吹込み、この 不活性ガスにより前記狭小部４ａより下方に流下した樹脂材料１ａの中の空気を 追い出してこの空気と不活性ガスとを置換し、前記樹脂材料が酸化して劣化する のを防止するようにしている。 Generally, when a resin material is fed into a heating cylinder in an injection molding machine, if air is mixed with the resin material, the resin material may be oxidized and deteriorated in the heating cylinder or the mold. .. Therefore, as is conventionally seen in the hopper described in Japanese Utility Model Publication No. 58-2576, which is shown in FIG. 8, the raw material supply chamber 1 and the gas discharge chamber 2 are partitioned by a partition plate 3 and communicate with each other by a narrow portion 4a. The inert gas is blown into the hopper 4 through the lower gas introduction port 5 of the rectangular hopper 4 configured as described above, and the inert gas causes the resin material 1a flowing downward from the narrow portion 4a to flow downward. The inside air is expelled to replace this air with an inert gas to prevent the resin material from oxidizing and deteriorating.
【０００３】[0003]
ところが、このようなホッパー４においては、ホッパー４が角形のホッパー４で あるため、原料の落下部の堆積層はその表面６が図８に示すように水平にならず 、ホッパー４の外壁にほぼ沿って傾斜した薄い層になり、またホッパー４の外壁 と仕切板３との間の狭小部４ａの断面積が、原料の落下口の断面積に対し小さい ため、原料の供給が不規則になったり、不活性ガスの吹込みによる原料中の空気 と不活性ガス雰囲気との置換効率が悪くなるおそれがあり、さらに、ホッパー４ が角形であることは、構造が複雑となり、かつコスト高となる欠点を有していた 。 However, in such a hopper 4, since the hopper 4 is a rectangular hopper 4, the surface 6 of the deposition layer at the falling portion of the raw material is not horizontal as shown in FIG. It becomes a thin layer inclined along it and the cross-sectional area of the narrow portion 4a between the outer wall of the hopper 4 and the partition plate 3 is smaller than the cross-sectional area of the raw material dropping port, so that the raw material is supplied irregularly. In addition, the efficiency of substitution of the air in the raw material with the inert gas atmosphere may deteriorate due to the blowing of the inert gas, and the prismatic shape of the hopper 4 complicates the structure and increases the cost. It had a drawback.
【０００４】 本考案は、前記事情に鑑みてなされたもので、原料の供給が均一となり、原料 の可塑化に伴う発生ガスの脱気が円滑に行なわれ、不活性ガスの吹込みによる原 料中の空気と不活性ガス雰囲気との置換効率が向上し、構造が簡単でコストの低 減を図ることができる射出成形機等の丸形ホッパーを提供することを目的とする 。The present invention has been made in view of the above circumstances, in which the supply of the raw material is uniform, the generated gas accompanying the plasticization of the raw material is smoothly degassed, and the raw material is injected by the inert gas. It is an object of the present invention to provide a round hopper for an injection molding machine or the like, which can improve the efficiency of replacement of the inside air with an inert gas atmosphere, have a simple structure, and can reduce the cost.
【０００５】[0005]
本考案は、前記目的を達成させるために、ホッパー本体の円錐形の底部に原料 落下部を設け、該原料落下部にガス導入口を備え、前記ホッパー本体内に円筒か らなるガス排出筒を、該ガス排出筒の外周下端と前記ホッパー本体の底部の内面 との間に設けた間隙により、前記ガス排出筒の内部のガス排出室と前記ホッパー 本体内の原料供給室とが連通するように、略直立状に設けた構成としている。 In order to achieve the above object, the present invention provides a raw material dropping part at the conical bottom of a hopper body, a gas inlet port at the raw material dropping part, and a cylindrical gas discharge tube in the hopper body. The gas discharge chamber inside the gas discharge cylinder and the raw material supply chamber inside the hopper body communicate with each other through a gap provided between the outer peripheral lower end of the gas discharge cylinder and the inner surface of the bottom of the hopper body. , Is provided in a substantially upright shape.
【０００６】[0006]
前記構成によれば、ホッパー本体の底部が略円錐形であるため、また、原料供 給室とガス排出室とを連通する間隙が、狭小であっても、ガス排出筒の外周囲に 形成される間隙全体の断面積は、原料落下部の断面積に対比してほぼ同等に、し かもその対比値を従来のものより大きくすることができる。またホッパー本体内 の原料がホッパー本体の断面円形の内面に沿って一様に落下するようになり、原 料落下部においては原料が充満された状態となり、その表層が水平となるので、 原料の供給が均一となり、不活性ガスの吹込みによる原料中の空気と不活性ガス 雰囲気との置換効率が良くなる。また、原料落下部の直上にガス排出室が位置し ているため、原料の可塑化に伴う発生ガスは、確実に該ガス排出室に流入され脱 気が円滑に行なわれる。 According to the above configuration, since the bottom of the hopper main body has a substantially conical shape, the gap that connects the raw material supply chamber and the gas discharge chamber is formed around the outer circumference of the gas discharge cylinder even if the gap is narrow. The cross-sectional area of the entire gap is almost the same as the cross-sectional area of the material dropping part, and the contrast value can be made larger than that of the conventional one. In addition, the raw material inside the hopper body will fall uniformly along the inner surface of the circular cross section of the hopper body, and at the raw material falling part, the raw material will be filled and the surface layer will be horizontal, so The supply is uniform, and the efficiency of the replacement of the air in the raw material with the inert gas atmosphere by the blowing of the inert gas is improved. Further, since the gas discharge chamber is located directly above the raw material dropping part, the gas generated by the plasticization of the raw material is surely flowed into the gas discharge chamber and is smoothly degassed.
【０００７】[0007]
以下、本考案の第１実施例を図１および図２に基づいて説明する。これらの図 中１１は、射出成形機の加熱シリンダに樹脂材料を供給するためのホッパー本体 である。このホッパー本体１１は、円筒状の胴部１１ａと、この胴部１１ａの下 端に一体に設けられた円錐形の底部１１ｂとにより形成されており、上部が開口 された略円錐形の容器である。ホッパー本体１１の下部には、円筒状の原料落下 部１２が一体に設けられており、この原料落下部１２の外壁には、原料落下部１ ２の内部に連通する筒状のガス導入口（ソケット）１３が設けられている。この ソケット１３は、原料落下部１２と直交状に設けられている。原料落下部１２の 下端には、加熱シリンダに連通する、原料落下部１２の内径に等しい開口が形成 され、ホッパー本体１１を加熱シリンダに取付けるためのフランジ１９が設けら れている。底部１１ｂには、前記ガス導入口１３が存在する側と反対側に位置し て長孔１１ｃがあけられている。この長孔１１ｃは、ホッパ本体１１の内部を点 検するもので、外側から透明の樹脂板等のカバー１１ｄにより閉鎖されている。 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. Reference numeral 11 in these drawings denotes a hopper body for supplying a resin material to the heating cylinder of the injection molding machine. The hopper body 11 is formed of a cylindrical body portion 11a and a conical bottom portion 11b integrally provided at the lower end of the body portion 11a, and is a substantially conical container having an open top. is there. A cylindrical raw material dropping part 12 is integrally provided at a lower portion of the hopper body 11, and a cylindrical gas introduction port communicating with the inside of the raw material dropping part 12 is provided on an outer wall of the raw material dropping part 12. Socket 13 is provided. The socket 13 is provided orthogonal to the raw material dropping part 12. An opening equal to the inner diameter of the raw material dropping portion 12 is formed at the lower end of the raw material dropping portion 12 and communicates with the heating cylinder, and a flange 19 for attaching the hopper body 11 to the heating cylinder is provided. A long hole 11c is formed in the bottom portion 11b on the side opposite to the side where the gas introduction port 13 is present. The elongated hole 11c is for observing the inside of the hopper body 11, and is closed from the outside by a cover 11d such as a transparent resin plate.
【０００８】 ホッパー本体１１内部には、その中心軸線上に中心軸を位置して円筒からなる ガス排出筒１４が設けられ、このガス排出筒１４内にガス排出室１５が形成され ている。ガス排出筒１４は、その外周上部と、ホッパー本体１１の胴部１１ａと の間に設けられたサポート１８により、直立状に支持されており、その外周下端 と底部１１ｂの内面との間に間隙（絞り部）１６を設けて、該間隙１６により、 ガス排出筒１４の内部のガス排出室１５とホッパー本体１１内の原料供給室１７ とが連通するようになっている。サポート１８は、ホッパー本体１１の直径線を 挟んで平行に離間させられた２枚の長方形板が、その板面を鉛直方向に向けた状 態で、その長さ方向の各一端が、ガス排出筒１４の上部に溶接され、この長方形 板の他端が、ホッパー本体１１の胴部１１ａの内面に溶接され、これによりホッ パー本体１１に対しガス排出筒１４を支持したものである。Inside the hopper main body 11, a gas discharge cylinder 14 formed of a cylinder is provided with its center axis located on the center axis, and a gas discharge chamber 15 is formed in the gas discharge cylinder 14. The gas discharge cylinder 14 is supported in an upright state by a support 18 provided between the upper part of the outer circumference and the body part 11a of the hopper body 11, and a gap is provided between the lower end of the outer circumference and the inner surface of the bottom part 11b. (Throttle portion) 16 is provided, and the gap 16 allows the gas discharge chamber 15 inside the gas discharge cylinder 14 and the raw material supply chamber 17 inside the hopper body 11 to communicate with each other. The support 18 has two rectangular plates that are spaced in parallel with each other with the diameter line of the hopper body 11 interposed therebetween, with their plate surfaces oriented in the vertical direction. The rectangular plate is welded to the upper portion of the cylinder 14, and the other end of the rectangular plate is welded to the inner surface of the body portion 11a of the hopper body 11, thereby supporting the gas discharge cylinder 14 with respect to the hopper body 11.
【０００９】 しかして、射出成形機の中に樹脂材料を送給する際には、この樹脂材料に空気 が混入すると、射出成形機の加熱シリンダ内や金型内で樹脂材料が酸化して劣化 するおそれがあるので、ホッパー本体１１の下部のガス導入口１３より、ホッパ ー本体１１内に不活性ガスを連続的に吹込む。すると、この不活性ガスが、原料 落下部１２を流下していく前記樹脂材料中の空気を排出してこの空気と置換し、 前記樹脂材料が酸化して劣化するのを防止し、排出された空気はガス排出室１５ に流入し、その上部より流出する。However, when the resin material is fed into the injection molding machine, if air is mixed into the resin material, the resin material is oxidized and deteriorated in the heating cylinder of the injection molding machine or in the mold. Therefore, an inert gas is continuously blown into the hopper body 11 through the gas introduction port 13 at the bottom of the hopper body 11. Then, the inert gas discharges the air in the resin material flowing down the raw material dropping part 12 and replaces it with the air, and prevents the resin material from being oxidized and deteriorated and discharged. Air flows into the gas exhaust chamber 15 and flows out from the upper part thereof.
【００１０】 この場合、ホッパー本体１１が略円錐形であるため、また、原料供給室１７と ガス排出室１５とを連通する間隙１６が狭小であっても、ガス排出筒１４の周囲 における前記間隙１６の全断面積が、原料落下部の断面積と対比してほぼ同等に 設定でき、しかもその対比値を従来のものより大きくすることができ、またホッ パー本体１１の横断面円形の内面に沿い、前記間隙１６より原料落下部下部１２ に落下する樹脂材料は、原料落下部１２に充満してその表層がほぼ水平となって 、加熱シリンダ内に流下していくので、加熱シリンダへ樹脂材料が均一に供給さ れ、不活性ガスの吹込みによる樹脂材料中の空気と、不活性ガス雰囲気との置換 効率が良くなる。また、原料落下部１２の直上に大きな空間即ちガス排出室１５ が有るため、樹脂材料の可塑化に伴い加熱シリンダ内に生じる発生ガスは、原料 落下部から上記ガス排出室１５に排出され、加熱シリンダからの脱気が円滑に行 なわれる。In this case, since the hopper main body 11 has a substantially conical shape, and even if the gap 16 that connects the raw material supply chamber 17 and the gas discharge chamber 15 is narrow, the gap around the gas discharge cylinder 14 is also reduced. The total cross-sectional area of 16 can be set to be almost the same as the cross-sectional area of the raw material falling part, and the comparison value can be made larger than that of the conventional one. Along the gap 16, the resin material that falls into the lower portion 12 of the raw material dropping portion fills the raw material dropping portion 12 and its surface layer becomes substantially horizontal and flows down into the heating cylinder. Is uniformly supplied, and the air in the resin material due to the blowing of the inert gas and the inert gas atmosphere are efficiently replaced. Further, since there is a large space, that is, the gas discharge chamber 15 right above the raw material dropping part 12, the gas generated in the heating cylinder due to the plasticization of the resin material is discharged from the raw material dropping part to the gas discharging chamber 15 and heated. Degassing from the cylinder is done smoothly.
【００１１】 次に、本考案の第２実施例を、図３〜図５に基づいて説明する。なお、前記第 １実施例と同一部分には同一符号を付してその詳細説明を省略する。この実施例 においては、前記第１実施例のガス排出筒１４と類似の機能を果す２つの円筒か らなるガス排出筒２１が、外筒２２と、この外筒２２内の下部に上下動摺動自在 に嵌入された透明な合成樹脂からなる内筒２３とから構成され、ガス排出筒２１ 内にガス排出室２４が形成されている。内筒２３は、外筒２２の下方部に形成さ れた上下方向に長い長孔２５に挿入されて内筒２３に螺合された止めねじ２６に より、外筒２２に上下動調節自在に固定されている。Next, a second embodiment of the present invention will be described with reference to FIGS. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. In this embodiment, a gas discharge cylinder 21 composed of two cylinders having a function similar to that of the gas discharge cylinder 14 of the first embodiment is provided with an outer cylinder 22 and a vertically movable slide in the lower part of the outer cylinder 22. A gas discharge chamber 24 is formed in the gas discharge cylinder 21. The inner cylinder 23 is movably fitted and is made of a transparent synthetic resin. The inner cylinder 23 is vertically adjustable in the outer cylinder 22 by a set screw 26 that is inserted into a vertically long slot 25 formed in a lower portion of the outer cylinder 22 and screwed into the inner cylinder 23. It is fixed.
【００１２】 ガス排出筒２１は、内筒２３の外周下端とホッパー本体１１の内面との間に間 隙１６を設けて、該間隙１６により、ガス排出筒２１の内部のガス排出室２４が ホッパー本体１１内の原料供給室１７と連通するように、外筒２２の外周と、ホ ッパー本体１１の胴部１１ａとの間に設けられた台形のサポート２７により、ホ ッパー本体１１内に直立状に設けられている。サポート２７は、ホッパー本体１ １の直径線を挟んで平行に離間させられた２枚の台形板２７ａの各一端が、外筒 ２２の外周に溶接され、これらの台形板２７ａの他端が、ホッパー本体１１の胴 部１１ａの内面に溶接され、さらに、各台形板２７ａの下縁がホッパー本体１１ の底部１１ｂに溶接され、これによりホッパー本体１１の軸線上にガス排出筒２ １を支持したものである。２枚の台形板２７ａにおけるガス排出筒２１の側の下 部の内側には、ウレタンゴム等からなるパッキン２７ｂが固着されており、該各 台形板２７ａの下部と前記内筒２３の外周部分との間の間隙が密閉されるように なっている。The gas discharge cylinder 21 is provided with a gap 16 between the lower end of the outer periphery of the inner cylinder 23 and the inner surface of the hopper body 11, and the gas discharge chamber 24 inside the gas discharge cylinder 21 is provided with the gap 16 by the gap 16. A trapezoidal support 27 provided between the outer circumference of the outer cylinder 22 and the body portion 11a of the hopper body 11 so as to communicate with the raw material supply chamber 17 in the body 11 is erected inside the hopper body 11. It is provided in. In the support 27, one ends of two trapezoidal plates 27a that are spaced in parallel with each other with the diameter line of the hopper body 11 interposed therebetween are welded to the outer circumference of the outer cylinder 22, and the other ends of these trapezoidal plates 27a are The inner surface of the body portion 11a of the hopper body 11 is welded, and further, the lower edge of each trapezoidal plate 27a is welded to the bottom portion 11b of the hopper body 11, thereby supporting the gas discharge cylinder 21 on the axis of the hopper body 11. It is a thing. A packing 27b made of urethane rubber or the like is fixed to the inside of the lower portion of the two trapezoidal plates 27a on the gas discharge cylinder 21 side, and the lower portion of each trapezoidal plate 27a and the outer peripheral portion of the inner cylinder 23 are The gap between them is sealed.
【００１３】 この実施例においては、射出成形機の中に樹脂材料を送給するに際し、ガス排 出筒２１の止めねじ２６を緩めて外筒２２に対し透明な内筒２３を上下動させ、 内筒２３の外周下端とホッパー本体１１の底部１１ｂの内面との間の間隙１６を 適宜調節し、サポート２７の２枚の台形板２７ａの間の空間には樹脂材料が満た されないようにしておく。以上により、この第２実施例では、間隙１６の大きさ を調節することができ、また、長孔（窓孔）１１ｃから、ホッパー本体１１内に 供給された樹脂材料が、前記間隙（絞り部）１６でブリッジを起こしていないか どうか、内筒２３内に侵入していないかどうか、目視により確認することができ 、この視認の結果、前記間隙１６における樹脂材料のブリッジや、内筒２３内へ の原料の侵入を避けるように、前記間隙１６の大きさを設定することができる。 なお、この第２実施例の他の作用効果は、第１実施例と同様である。In this embodiment, when the resin material is fed into the injection molding machine, the set screw 26 of the gas discharge cylinder 21 is loosened to move the transparent inner cylinder 23 up and down with respect to the outer cylinder 22, The gap 16 between the outer peripheral lower end of the inner cylinder 23 and the inner surface of the bottom portion 11b of the hopper body 11 is appropriately adjusted so that the space between the two trapezoidal plates 27a of the support 27 is not filled with the resin material. .. As described above, in the second embodiment, the size of the gap 16 can be adjusted, and the resin material supplied into the hopper main body 11 from the long hole (window hole) 11c can be adjusted to the gap (throttle portion). ) 16, it is possible to visually confirm whether or not a bridge has occurred and whether or not it has entered the inner cylinder 23. As a result of this visual confirmation, the bridge of the resin material in the gap 16 and the inner cylinder 23 The size of the gap 16 can be set so as to avoid the invasion of the raw material into the gap. The other operational effects of the second embodiment are similar to those of the first embodiment.
【００１４】 次に、本考案の第３実施例を、図６及び図７に基づいて説明する。なお、本実 施例において前記第１実施例と同一部分には同一符号を付してその詳細説明を省 略する。この実施例においては、前記第１実施例の２つのサポート１８における ホッパー本体１１の胴部１１ａ側の端部が、この胴部１１ａの内面に溶接されず に、図７に示すように相互に連結板３１により一体的に連結されてサポート３２ が構成されている。そして、胴部１１ａに形成された長孔（図示せず）に挿入さ れ、連結板３１に螺合された止めねじ３３により、胴部１１ａに連結板３１が上 下動調節自在に固定されている。これにより、第３実施例においては、止めねじ ３３を緩め、サポート３２を適宜上下動させて所望位置に定め、止めねじ３３を 締め付けることにより、ガス排出筒１４の外周下端とホッパー本体１１の底部１ １ｂの内面との間の間隙１６を適宜調節することができる。なお、この第３実施 例の他の作用効果は、第１実施例と同様である。Next, a third embodiment of the present invention will be described with reference to FIGS. 6 and 7. In the present embodiment, the same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. In this embodiment, the ends of the two supports 18 of the first embodiment on the body part 11a side of the hopper body 11 are not welded to the inner surface of the body part 11a, but as shown in FIG. The support 32 is integrally connected by the connecting plate 31. Then, the connecting plate 31 is inserted into a long hole (not shown) formed in the body portion 11a and is screwed to the connecting plate 31, so that the connecting plate 31 is fixed to the body portion 11a so as to be vertically adjustable. ing. Thus, in the third embodiment, the set screw 33 is loosened, the support 32 is appropriately moved up and down to a desired position, and the set screw 33 is tightened, whereby the lower end of the outer periphery of the gas discharge cylinder 14 and the bottom of the hopper body 11 are tightened. The gap 16 between the inner surface of 11b can be adjusted appropriately. The other operational effects of the third embodiment are similar to those of the first embodiment.
【００１５】[0015]
本考案によれば、ホッパー本体の円錐形の底部に原料落下部を設け、該原料落 下部にガス導入口を備え、前記ホッパー本体内に円筒からなるガス排出筒を、該 ガス排出筒の外周下端と前記ホッパー本体の底部の内面との間に設けた間隙によ り、前記ガス排出筒の内部のガス排出室と前記ホッパー本体内の原料供給室とが 連通するように、略直立状に設けたので、原料供給室とガス排出室とを連通する 前記間隙は、狭小であっても、ガス排出筒の外周に形成される間隙全体の断面積 は、原料落下部の断面積と対比してほぼ同等に設定でき、しかもその対比値を従 来装置のものより大きくすることができ、これにより、ホッパー本体内の原料が ホッパー本体の断面円形の内面に沿って一様に落下するようになり、原料落下部 においては、原料が充満された状態となり、その表層が略水平となり、原料の供 給を均一とすることができ、不活性ガスの吹込みによる原料中の空気と不活性ガ ス雰囲気との置換効率を良くすることができ、また、原料落下部の直上にガス排 出室が位置しているため、原料の可塑化に伴う発生ガスの脱気を円滑、確実に行 なうことができる。また、構造が簡単で製作コストが低減する実用上の効果があ る。 According to the present invention, a raw material dropping part is provided at a conical bottom of a hopper body, a gas introducing port is provided at a lower portion of the raw material, and a cylindrical gas discharge tube is provided in the hopper body. A gap provided between the lower end and the inner surface of the bottom of the hopper body provides a substantially upright shape so that the gas discharge chamber inside the gas discharge cylinder and the raw material supply chamber inside the hopper body communicate with each other. Since the gap is provided so that the raw material supply chamber and the gas discharge chamber communicate with each other, the cross-sectional area of the entire gap formed on the outer periphery of the gas discharge cylinder is small in comparison with the cross-sectional area of the raw material dropping part. Can be set almost the same, and the contrast value can be made larger than that of the conventional device, so that the raw material in the hopper body will drop uniformly along the inner surface of the circular cross section of the hopper body. In the raw material drop section, Is filled, the surface layer becomes almost horizontal, and the supply of the raw material can be made uniform, and the efficiency of the replacement of the air in the raw material with the inert gas atmosphere by the blowing of the inert gas is improved. Moreover, since the gas discharge chamber is located immediately above the raw material dropping part, the gas generated by the plasticization of the raw material can be degassed smoothly and reliably. In addition, it has a practical effect that the structure is simple and the manufacturing cost is reduced.
【図１】本考案の第１実施例を示す一部切欠縦断面図で
ある。FIG. 1 is a partially cutaway vertical sectional view showing a first embodiment of the present invention.
【図２】本考案の第１実施例を示す平面図である。FIG. 2 is a plan view showing a first embodiment of the present invention.
【図３】本考案の第２実施例を示す一部切欠縦断面図で
ある。FIG. 3 is a partially cutaway vertical sectional view showing a second embodiment of the present invention.
【図４】本考案の第２実施例を示す平面図である。FIG. 4 is a plan view showing a second embodiment of the present invention.
【図５】図３のＢ矢視図である。5 is a view on arrow B of FIG.
【図６】本考案の第３実施例を示す一部切欠縦断面図で
ある。FIG. 6 is a partially cutaway vertical sectional view showing a third embodiment of the present invention.
【図７】本考案の第３実施例を示す平面図である。FIG. 7 is a plan view showing a third embodiment of the present invention.
【図８】従来のホッパーの一例を示す一部切欠縦断面図
である。FIG. 8 is a partially cutaway vertical sectional view showing an example of a conventional hopper.
１１ ホッパー １２ 原料落下部 １３ ガス導入口（ソケット） １４，２１ ガス排出筒 １５，２４ ガス排出室 １６ 間隙（絞り部） １７ 原料供給室 11 Hopper 12 Raw Material Drop Section 13 Gas Inlet (Socket) 14, 21 Gas Discharge Cylinder 15, 24 Gas Discharge Chamber 16 Gap (Throttle Portion) 17 Raw Material Supply Chamber
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年７月１４日[Submission date] July 14, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図３[Name of item to be corrected] Figure 3
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図３】 [Figure 3]
Claims (1)
部を設け、該原料落下部にガス導入口を備え、前記ホッ
パー本体内に円筒からなるガス排出筒を、該ガス排出筒
の外周下端と前記ホッパー本体の底部の内面との間に設
けた間隙により、前記ガス排出筒の内部のガス排出室と
前記ホッパー本体内の原料供給室とが連通するように、
略直立状に設けたことを特徴とする射出成形機等の丸形
ホッパー。1. A conical bottom of a hopper body is provided with a raw material dropping part, a gas introducing port is provided in the raw material dropping part, and a cylindrical gas discharge cylinder is provided in the hopper main body, and a lower end of an outer periphery of the gas discharge cylinder. And a gap provided between the inner surface of the bottom of the hopper body, so that the gas discharge chamber inside the gas discharge cylinder and the raw material supply chamber inside the hopper body communicate with each other,
A round hopper for an injection molding machine or the like, which is provided in a substantially upright shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3913491U JPH0628249Y2 (en) | 1991-04-26 | 1991-04-26 | Round hopper such as injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3913491U JPH0628249Y2 (en) | 1991-04-26 | 1991-04-26 | Round hopper such as injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0585614U true JPH0585614U (en) | 1993-11-19 |
| JPH0628249Y2 JPH0628249Y2 (en) | 1994-08-03 |
Family
ID=12544637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3913491U Expired - Lifetime JPH0628249Y2 (en) | 1991-04-26 | 1991-04-26 | Round hopper such as injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0628249Y2 (en) |
-
1991
- 1991-04-26 JP JP3913491U patent/JPH0628249Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0628249Y2 (en) | 1994-08-03 |
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