JPH08197580A - Material supply port of injection molding machine and thermoplastic resin plasticizing and weighing method - Google Patents

Material supply port of injection molding machine and thermoplastic resin plasticizing and weighing method

Info

Publication number
JPH08197580A
JPH08197580A JP7008257A JP825795A JPH08197580A JP H08197580 A JPH08197580 A JP H08197580A JP 7008257 A JP7008257 A JP 7008257A JP 825795 A JP825795 A JP 825795A JP H08197580 A JPH08197580 A JP H08197580A
Authority
JP
Japan
Prior art keywords
supply port
material supply
screw
guide member
hole
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
Application number
JP7008257A
Other languages
Japanese (ja)
Other versions
JP2931225B2 (en
Inventor
Kazuhisa Yokoyama
和久 横山
Masamichi Koide
正道 小出
Mitsuru Yokouchi
満 横内
Yukihisa Kumagai
幸久 熊谷
Mitsuhiro Mochizuki
光博 望月
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.)
Japan Steel Works Ltd
Polyplastics Co Ltd
Original Assignee
Japan Steel Works Ltd
Polyplastics 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 Japan Steel Works Ltd, Polyplastics Co Ltd filed Critical Japan Steel Works Ltd
Priority to JP7008257A priority Critical patent/JP2931225B2/en
Publication of JPH08197580A publication Critical patent/JPH08197580A/en
Application granted granted Critical
Publication of JP2931225B2 publication Critical patent/JP2931225B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To allow long pellets to bite in a screw in a state made hard to break from the material supply port of an injection molding machine. CONSTITUTION: A guide member 12 is fixed to a cylinder 10 in a detachable manner and a rotary screw 20 is provided in the cylinder 10 and the material supply port 14 of a hopper cylinder for sending a material to the screw 20 is formed to the guide member 12. The material supply port 14 is constituted of a hole part 16 opened upwardly and the almost partially tapered groove part 18 communicating with the lower end of the hole part 16 and formed between the upper part of the outer peripheral surface of the screw 20 and the guide member and becoming small in its diameter dimension toward the leading end of the screw.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、押出機や射出成形機な
どの材料供給口及び熱可塑性樹脂の可塑化計量方法に関
するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material supply port for an extruder or an injection molding machine and a method for plasticizing and measuring a thermoplastic resin.

【0002】[0002]

【従来の技術】従来の押出機の材料供給口としては、実
開昭58−45233号公報に示されるようなものがあ
る。これに示される押出機の材料供給口は、これの内周
面がスクリュー軸心と直交する配置とされている。これ
により、ペレット化された成形材料が材料供給口からシ
リンダ内へ効率よく食い込まれるようにしている。
2. Description of the Related Art As a material supply port of a conventional extruder, there is one disclosed in Japanese Utility Model Laid-Open No. 58-45233. The material supply port of the extruder shown therein is arranged such that the inner peripheral surface thereof is orthogonal to the screw axis. As a result, the pelletized molding material is efficiently bited into the cylinder from the material supply port.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、このよ
うな従来の材料供給口形状では、ガラス長繊維を含む比
較的長尺(たとえばペレット長48mm)のペレットを
成形材料とした場合には、食い込み時にペレットが全長
にわたってスクリュー溝内に入り込まないうちにペレッ
ト後端側が曲げやせん断を受けることが多いため切断さ
れやすく、せっかくのガラス長繊維が短い繊維のものと
なってしまい、後続の成形工程において耐衝撃性等の機
械的特性に優れた成形品を製造することは困難であると
いう問題点がある。また、材料供給口のスクリュー側開
口端部が、ガラス繊維との摩擦のために、摩耗しやすい
という別の問題点もある。また、長尺ペレットは、かさ
比重が小さく、ホッパ口部でからみやすいために可塑化
能力の著しい低下を起こし、成形サイクル時間が長くな
ってしまうという問題点もある。本発明はこのような課
題を解決することを目的としている。
However, in such a conventional material supply port shape, when relatively long pellets (for example, a pellet length of 48 mm) containing long glass fibers are used as the molding material, the material is bitten when biting. Since the pellet rear end side is often bent or sheared before it enters the screw groove over the entire length, it is easily cut, and the long glass fiber becomes a short fiber, which is resistant to the subsequent molding process. There is a problem that it is difficult to manufacture a molded product having excellent mechanical properties such as impact resistance. Further, there is another problem that the screw side opening end of the material supply port is easily worn due to friction with the glass fiber. Further, the long pellet has a problem that the bulk specific gravity is small and it is easy to be entangled at the mouth of the hopper, so that the plasticizing ability is remarkably lowered, and the molding cycle time becomes long. The present invention aims to solve such problems.

【0004】[0004]

【課題を解決するための手段】本発明は、シリンダ内面
側の上半部に、材料供給側からスクリュー先端側に向か
って次第に直径寸法が小さくなる、部分テーパ状の溝部
を形成することにより上記課題を解決する。すなわち本
発明の請求項1に対応する射出成形機などの材料供給口
は、回転するスクリュー(20)を内装するシリンダ
(10)内に材料を送り込むためのものであって、上記
材料供給口(14)は、上方が開放された穴部(16)
と、穴部(16)の下端側と連通されるとともにスクリ
ュー(20)の外周面上部側と対向するように形成され
ておりスクリュー先端側ほど直径寸法の小さくなる部分
テーパ状の溝部(18)と、から構成されていることを
特徴としている。また、請求項2に対応するものは、上
記溝部(18)は、これの軸方向の長さ寸法(L)が、
上記スクリュー(20)の外径寸法の2〜3倍のものと
されているとともに、これの上記部分テーパ形状は、穴
部(16)と接続する側の内周上部位置からスクリュー
(20)の外周までの寸法(h)が、使用するペレット
の長さ寸法(m)からフライト部の高さ寸法(n)を差
し引いたものと等しいか、これよりも大きい寸法に設定
されている、ことを特徴としている。さらに、請求項3
に対応するものは、上記シリンダ(10)に、取り外し
可能に固定された案内部材(12)が設けられており、
上記穴部(16)及び上記溝部(18)が案内部材(1
2)に形成されている、ことを特徴としている。また、
請求項4に対応するものは、請求項1、2、又は3記載
の材料供給口を有する装置を用いて熱可塑性樹脂の可塑
化計量を行うことを特徴としている。なお、かっこ内の
符号は、実施例の対応する部材などを示す。
According to the present invention, a partially tapered groove is formed in the upper half of the inner surface of the cylinder, the diameter of which gradually decreases from the material supply side toward the tip of the screw. Solve the problem. That is, a material supply port of an injection molding machine or the like according to claim 1 of the present invention is for feeding a material into a cylinder (10) containing a rotating screw (20), and the material supply port ( 14) is a hole (16) with an open top
And a partially tapered groove portion (18) which is formed so as to communicate with the lower end side of the hole (16) and faces the upper side of the outer peripheral surface of the screw (20) and whose diameter becomes smaller toward the screw tip side. It is characterized by being composed of and. Further, according to a second aspect, in the groove portion (18), a length dimension (L) in the axial direction of the groove portion (18) is
The outer diameter of the screw (20) is set to 2 to 3 times, and the partial taper shape of the screw (20) extends from the upper position of the inner circumference on the side connected to the hole (16) to the screw (20). The dimension (h) to the outer circumference is equal to or greater than the length dimension (m) of the pellets used minus the height dimension (n) of the flight part. It has a feature. Further, claim 3
Corresponding to the above, the guide member (12) fixed to the cylinder (10) in a detachable manner is provided,
The hole portion (16) and the groove portion (18) have guide members (1
It is characterized in that it is formed in 2). Also,
The structure corresponding to claim 4 is characterized in that the apparatus having the material supply port according to claim 1, 2 or 3 is used to perform plasticization measurement of the thermoplastic resin. The reference numerals in the parentheses indicate the corresponding members in the embodiments.

【0005】[0005]

【作用】材料供給口内の長尺ペレットは、スクリューに
よってシリンダ内に食い込まれる際、スクリュー軸心と
直交する姿勢から、テーパ状の溝部に沿って徐々に食い
込み姿勢を変えられた状態でスクリュー溝内に食い込ま
れることになるので、曲げ応力やせん断応力を受けにく
くなり、従来の材料供給口形状のようにスクリュー軸心
と直交する姿勢から食い込まれたもの以外は、ペレット
が切断されやすい場合と比較して、長尺ペレットであっ
ても食い込みの際に折損の度合いが少なくて済むので、
後続の成形工程で成形された成形品の耐衝撃性等の機械
的特性を良好なものとすることができる。また、かさ比
重の小さな長尺ペレットであっても、シリンダ内での材
料不足状態が起こりにくく、輸送効率の向上と、可塑化
密度・計量時間のばらつきを少なくすることができる。
[Operation] When the long pellets in the material supply port are bited into the cylinder by the screw, the long pellets in the screw groove are gradually changed from the posture orthogonal to the screw axis center to the tapered groove portion. Since it will be bitten into, it will be less susceptible to bending stress and shear stress, and compared to the case where pellets are easily cut except for those that have been bitten from the posture orthogonal to the screw axis like the conventional material supply port shape. Then, even if it is a long pellet, the degree of breakage at the time of biting can be small,
It is possible to improve the mechanical properties such as impact resistance of the molded product molded in the subsequent molding process. Further, even in the case of long pellets having a small bulk specific gravity, a material shortage state in the cylinder is unlikely to occur, and it is possible to improve transport efficiency and reduce variations in plasticization density and weighing time.

【0006】[0006]

【実施例】図1に本発明を実施した射出成形機の射出シ
リンダ装置の材料供給口の部分図を示す。射出シリンダ
10には射出スクリュー20が回転可能、かつ、軸方向
に移動可能にはめ合わされている。射出シリンダ10に
は、これの上部の接続部10aに、案内部材12が取り
外し可能に固定されている。案内部材12には、材料供
給口14が形成されている。材料供給口14は、図示の
ように、上部が開放された穴部16と、溝部18と、か
ら形成されている。溝部18は、案内部材12の下面側
壁面に、射出スクリュー20の外周面と対向するように
形成されており、穴部16の下部と連通するとともに射
出スクリュー20先端側ほど小径となる部分テーパ状の
溝形状に形成されている。すなわち、図2に示すよう
に、溝部18は、射出シリンダ10の軸心と直交する方
向の断面が略半円形のものとされている。図1に示すよ
うに、材料供給口14の溝部18は、これの軸方向の長
さ寸法Lが射出スクリュー20の外径寸法の2〜3倍に
なるように設定されており、また、これの穴部16と接
続する内周上部位置から射出スクリュー20の外周面ま
での寸法hが、使用するペレットの長さ寸法mから、射
出スクリュー20のフライト部の高さ寸法nを差し引い
たものと等しいか、これよりも大きい寸法に設定されて
いる。すなわち、射出スクリュー20を所定の寸法諸元
のものとした場合、案内部材12の溝部18の壁面のテ
ーパ度合いは、ペレットの長さ寸法mに対応して決定さ
れるようになっている。
1 is a partial view of a material supply port of an injection cylinder device of an injection molding machine embodying the present invention. An injection screw 20 is fitted in the injection cylinder 10 so as to be rotatable and axially movable. A guide member 12 is removably fixed to the injection cylinder 10 at a connection portion 10a above the injection cylinder 10. A material supply port 14 is formed in the guide member 12. The material supply port 14 is formed of a hole portion 16 having an open top and a groove portion 18 as shown in the figure. The groove portion 18 is formed on the lower side wall surface of the guide member 12 so as to face the outer peripheral surface of the injection screw 20, communicates with the lower portion of the hole portion 16 and has a partially tapered shape in which the diameter becomes smaller toward the tip end side of the injection screw 20. Is formed in a groove shape. That is, as shown in FIG. 2, the groove portion 18 has a substantially semicircular cross section in a direction orthogonal to the axis of the injection cylinder 10. As shown in FIG. 1, the groove portion 18 of the material supply port 14 is set so that the axial length dimension L thereof is 2 to 3 times the outer diameter dimension of the injection screw 20. The dimension h from the inner peripheral upper position connected to the hole 16 to the outer peripheral surface of the injection screw 20 is obtained by subtracting the height dimension n of the flight portion of the injection screw 20 from the length dimension m of the pellet to be used. Equal to or larger than this. That is, when the injection screw 20 has predetermined dimensions, the taper degree of the wall surface of the groove portion 18 of the guide member 12 is determined according to the length dimension m of the pellet.

【0007】次に、この実施例の作用を説明する。射出
シリンダ10上部の図示してないホッパから案内部材1
2の材料供給口14にガラス長繊維を含む樹脂材料から
成る長尺のペレット(実施例の場合ペレット長48m
m)を供給するとともに、図示してないモータによって
射出スクリュー20を回転させる。長尺ペレットは、材
料供給口14の穴部16から射出スクリュー20のスク
リュー溝内に食い込まれようとする。この際、長尺ペレ
ットは、絡み合ったような容積の大きい状態であって
も、部分テーパ穴状の溝部18内に輸送され、溝部18
内を軸方向に移動するとき、これのテーパによって徐々
にスクリュー溝に沿うように姿勢を変えながら送られ、
同時にテーパの断面積減少による圧縮効果とあいまって
容積を減少して可塑化されていくことになる。これによ
り、長尺のペレットであっても、食い込みの際に折損さ
れることが少なく、かつ効率の良いペレットの食い込み
が達成される。
Next, the operation of this embodiment will be described. From the hopper (not shown) above the injection cylinder 10 to the guide member 1
A long pellet made of a resin material containing long glass fibers is provided in the second material supply port 14 (in the case of the embodiment, the pellet length is 48 m.
m) is supplied and the injection screw 20 is rotated by a motor (not shown). The long pellet tries to bite into the screw groove of the injection screw 20 through the hole 16 of the material supply port 14. At this time, the long pellets are transported into the groove portion 18 having the partially tapered hole shape even if the long pellets have a large volume such that they are entangled with each other.
When moving in the axial direction inside, the taper of this moves gradually while changing the posture along the screw groove,
At the same time, together with the compression effect due to the decrease in the cross-sectional area of the taper, the volume is reduced and the plasticization is performed. As a result, even long pellets are less likely to be broken during biting, and efficient biting of pellets is achieved.

【0008】なお、従来の材料供給口形状のように、溝
部18が形成されていないものでは、大容積(低かさ比
重)の材料の食い込みは不安定であり、穴部16部に位
置している間にスクリュー溝内に食い込み完了すること
ができなかった一部の長尺ペレットは、穴部16部の図
中左端側壁面において切断されやすく、長さの短いもの
にされやすいことになる。なお、長尺ペレットは、自重
による自然供給では、長尺のものになればなるほど、長
尺ペレット同士が絡み合うブリッジが発生しやすくなっ
てホッパ内から落下しにくくなる傾向があるので、適宜
パーツフィーダを設けて、これから長尺ペレットの適量
を強制的に材料供給口に供給するようにすることが望ま
しい。
In the case where the groove 18 is not formed as in the conventional material supply port shape, the biting of a material having a large volume (low bulk specific gravity) is unstable and the material is located at the hole 16 part. Some long pellets that could not be completely bitten into the screw groove during the operation are easily cut at the left end side wall surface in the figure of the hole portion 16 and are likely to have a short length. It should be noted that, as long pellets are naturally fed by their own weight, the longer the pellets become, the more easily the long pellets are entangled with each other, which tends to make it difficult to drop them from the hopper. It is desirable to provide a suitable amount of long pellets forcibly to the material supply port.

【0009】以上のようにして、本発明の材料供給口1
4においては、長尺ペレットの食い込み時の折損を少な
くした状態で、長尺ペレットを射出シリンダ10内に供
給することができるので、可塑化・計量工程を終了し、
後続の射出工程において射出成形されたガラス長繊維を
含む樹脂材料から成る成形品を、耐衝撃性等の機械的特
性に優れたものとすることができる。また、長時間の使
用により、案内部材12の穴部16や溝部18がガラス
繊維によって摩耗した場合でも、案内部材12だけを交
換すればよく、穴部16や溝部18を射出シリンダ10
側に形成して、これらが摩耗した際、射出シリンダ10
全体を交換する場合と比較して経済的である。
As described above, the material supply port 1 of the present invention
In 4, the long pellets can be fed into the injection cylinder 10 in a state where the breakage at the biting of the long pellets is reduced, so that the plasticizing / measuring step is completed,
A molded article made of a resin material containing long glass fibers injection-molded in the subsequent injection step can be made to have excellent mechanical properties such as impact resistance. Further, even if the hole 16 or the groove 18 of the guide member 12 is worn by the glass fiber due to long-term use, only the guide member 12 needs to be replaced, and the hole 16 or the groove 18 can be replaced with the injection cylinder 10.
Side, and when these are worn, the injection cylinder 10
It is more economical than replacing the whole.

【0010】(試験結果)本発明の材料供給口14を用
いた射出シリンダ装置と、従来の材料供給口形状の射出
シリンダ装置と、を用いてガラス長繊維を含む樹脂材料
(試験例ではセルストラン樹脂)から成る長尺ペレット
(ペレット長48mm)の食い込み時の折損度合いを測
定した。従来の材料供給口形状の射出シリンダ装置を用
いた場合にはペレットの重量割合で42.2%のペレッ
ト折損率であった。折損されたペレットを観察すると、
完全に切断されたものがほとんどであった。なお、従来
の材料供給口形状のままで、材料供給口の直径寸法だけ
を大きくしたものについても試験したが、ペレット折損
率が改善される様子は見られなかった。これに対して、
本発明の材料供給口14の射出シリンダ装置を用いた場
合には、射出スクリュー20のスクリューピッチの大小
によっても多少異なるが、重量割合で10.4〜15.
5%のペレット折損率となり、従来のものの1/3〜1
/4の折損率とすることができた。折損されたペレット
を観察すると、切断分離されたものは少なく、射出スク
リュー20のフライト部に押し潰された折れ曲がり状の
ものが多かった。また、可塑化能力に関しても、従来の
射出シリンダ装置では、144kg/Hr程度であった
のに対し、235〜300kg/Hrまで向上し、可塑
化時間のばらつきも大幅に少なくなった。
(Test Results) A resin material containing long glass fibers was used by using an injection cylinder device using the material supply port 14 of the present invention and a conventional injection cylinder device having a material supply port shape (Cell Strand resin in the test example). The degree of breakage of the long pellet (4) (pellet length 48 mm) was measured. When the conventional injection cylinder device having the material supply port shape was used, the pellet breakage rate was 42.2% in terms of pellet weight ratio. Observing the broken pellets,
Most were completely cut. It was to be noted that the shape of the conventional material supply port was kept unchanged, and the diameter of the material supply port was increased, but the pellet breakage rate was not improved. On the contrary,
In the case of using the injection cylinder device of the material supply port 14 of the present invention, the weight ratio of 10.4 to 15.15 varies depending on the size of the screw pitch of the injection screw 20.
5% pellet breakage rate, 1/3 to 1 of the conventional one
The breakage rate was / 4. When the broken pellets were observed, few were cut and separated, and many were bent and crushed by the flight part of the injection screw 20. Also, regarding the plasticizing ability, in the conventional injection cylinder device, it was about 144 kg / Hr, but it was improved to 235 to 300 kg / Hr, and the variation in the plasticizing time was significantly reduced.

【0011】なお、上記実施例の説明においては、穴部
16及び溝部18が形成された一体の案内部材12を用
いるものとしたが、これは、必要に応じて複数の部材に
分割することができる。また、上記実施例の説明におい
ては、射出成形機の射出シリンダ装置に本発明を実施す
るものとしたが、射出成形機に限るわけではなく、押出
機の材料供給口に本発明を適用することもできる。さら
に、上記実施例の説明においては、長尺ペレットを用い
るものとしたが、これに限らず、形状が不規則なペレッ
トに本発明を適用することができ、また、再生材等の使
用の際のホッパ口における材料の破砕防止、計量安定
性、可塑化密度の向上に対しても有効である。
In the description of the above embodiment, the integrated guide member 12 having the hole 16 and the groove 18 is used, but this may be divided into a plurality of members as required. it can. Further, in the above description of the embodiments, the present invention is applied to the injection cylinder device of the injection molding machine, but the present invention is not limited to the injection molding machine, and the present invention is applied to the material supply port of the extruder. You can also Furthermore, in the description of the above examples, long pellets were used, but the present invention is not limited to this, and the present invention can be applied to irregularly shaped pellets, and in the case of using recycled materials and the like. It is also effective in preventing crushing of materials at the hopper mouth, improving weighing stability, and improving plasticization density.

【0012】[0012]

【発明の効果】以上説明したように、本発明によれば、
長尺のペレットを材料供給口に供給する場合であって
も、ペレットの折損率を従来よりも大幅に減少させるこ
とができ、しかも折損されたものでも、完全に切断され
ているわけではないので、ガラス長繊維を含む樹脂材料
から成る長尺のペレットを用いて、耐衝撃性等の機械的
特性に優れた成形品を成形することが可能になる。ま
た、長尺ペレットのように、かさ比重が小さく絡み合い
やすい材料であっても、十分な可塑化能力を確保するこ
とができ、成形性を安定させることが可能となる。な
お、使用する材料の形態に対応した最適形状の案内部材
に交換することが容易なので、食い込みが良好で、しか
もペレットの折損が少ない状態で、ペレットをスクリュ
ーに食い込ませることができる。また、請求項3の構成
のものにおいては、何らかの原因で材料供給口が摩耗し
た場合であっても、射出シリンダ全体を交換するような
ことは必要なく、材料供給口を構成する案内部材だけを
交換すればよいので、経済的である。
As described above, according to the present invention,
Even when supplying long pellets to the material supply port, the breakage rate of the pellets can be significantly reduced compared to the past, and even if broken pellets are not completely cut. By using long pellets made of a resin material containing long glass fibers, it becomes possible to form a molded article having excellent mechanical properties such as impact resistance. Further, even with a material such as a long pellet having a low bulk specific gravity and being easily entangled with each other, sufficient plasticizing ability can be ensured and the moldability can be stabilized. Since it is easy to replace the guide member with the optimum shape corresponding to the form of the material to be used, it is possible to make the pellet bite into the screw with good biting and little breakage of the pellet. Further, in the structure of claim 3, even if the material supply port is worn for some reason, it is not necessary to replace the entire injection cylinder, and only the guide member forming the material supply port is used. It is economical because it can be exchanged.

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

【図1】本発明を実施した射出成形機の射出シリンダ装
置を示す図である。
FIG. 1 is a diagram showing an injection cylinder device of an injection molding machine embodying the present invention.

【図2】図1の2−2線に沿う断面図である。FIG. 2 is a sectional view taken along line 2-2 of FIG.

【符号の説明】[Explanation of symbols]

10 射出シリンダ 12 案内部材 14 材料供給口 16 穴部 18 空間部 20 射出スクリュー 10 Injection Cylinder 12 Guide Member 14 Material Supply Port 16 Hole 18 Space 20 Injection Screw

───────────────────────────────────────────────────── フロントページの続き (72)発明者 横内 満 東京都千代田区霞が関3丁目2番5号 ポ リプラスチックス株式会社内 (72)発明者 熊谷 幸久 東京都千代田区霞が関3丁目2番5号 ポ リプラスチックス株式会社内 (72)発明者 望月 光博 東京都千代田区霞が関3丁目2番5号 ポ リプラスチックス株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Mitsuru Yokouchi 3-5 Kasumigaseki, Chiyoda-ku, Tokyo Tokyo Polyplastics Co., Ltd. (72) Inventor Yukisa Kumagai 3-5-2 Kasumigaseki, Chiyoda-ku, Tokyo Inside Polyplastics Co., Ltd. (72) Inventor Mitsuhiro Mochizuki 3-5 Kasumigaseki, Chiyoda-ku, Tokyo Inside Polyplastics Co., Ltd.

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 回転するスクリュー(20)を内装する
シリンダ(10)内に材料を送り込むための材料供給口
(14)において、 上記材料供給口(14)は、 上方が開放された穴部(16)と、 穴部(16)の下端側と連通されるとともにスクリュー
(20)の外周面上部側と対向するように形成されてお
りスクリュー先端側ほど直径寸法の小さくなる部分テー
パ状の溝部(18)と、 から構成されていることを特徴とする射出成形機などの
材料供給口。
1. A material supply port (14) for feeding a material into a cylinder (10) containing a rotating screw (20), wherein the material supply port (14) has a hole (upward opening). 16) is formed so as to communicate with the lower end side of the hole (16) and to face the outer peripheral surface upper side of the screw (20), and the diameter dimension becomes smaller toward the screw tip side (partially tapered groove ( 18) and a material supply port for an injection molding machine or the like.
【請求項2】 上記溝部(18)は、これの軸方向の長
さ寸法(L)が、上記スクリュー(20)の外径寸法の
2〜3倍のものとされているとともに、これの上記部分
テーパ形状は、穴部(16)と接続する側の内周上部位
置からスクリュー(20)の外周までの寸法(h)が、
使用するペレットの長さ寸法(m)からフライト部の高
さ寸法(n)を差し引いたものと等しいか、これよりも
大きい寸法に設定されている、 ことを特徴とする請求項1記載の射出成形機などの材料
供給口。
2. The groove (18) has an axial length (L) in the axial direction which is 2 to 3 times the outer diameter of the screw (20). The partially tapered shape is such that the dimension (h) from the inner peripheral upper position on the side connected to the hole (16) to the outer periphery of the screw (20) is
The injection according to claim 1, wherein the pellet is set to have a length equal to or greater than a length (m) of the pellet used minus the height (n) of the flight portion. Material supply port for molding machines, etc.
【請求項3】 上記シリンダ(10)に、取り外し可能
に固定された案内部材(12)が設けられており、 上記穴部(16)及び上記溝部(18)が案内部材(1
2)に形成されている、 ことを特徴とする請求項1又は2記載の射出成形機など
の材料供給口。
3. The cylinder (10) is provided with a detachably fixed guide member (12), and the hole (16) and the groove (18) are provided in the guide member (1).
It is formed in 2), The material supply port of the injection molding machine etc. of Claim 1 or 2 characterized by the above-mentioned.
【請求項4】 請求項1、2、又は3記載の材料供給口
を有する装置を用いることを特徴とする熱可塑性樹脂の
可塑化計量方法。
4. A method for plasticizing and measuring a thermoplastic resin, which comprises using an apparatus having a material supply port according to claim 1, 2, or 3.
JP7008257A 1995-01-23 1995-01-23 Material supply port of injection molding machine and plasticization measurement method of thermoplastic resin Expired - Fee Related JP2931225B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7008257A JP2931225B2 (en) 1995-01-23 1995-01-23 Material supply port of injection molding machine and plasticization measurement method of thermoplastic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7008257A JP2931225B2 (en) 1995-01-23 1995-01-23 Material supply port of injection molding machine and plasticization measurement method of thermoplastic resin

Publications (2)

Publication Number Publication Date
JPH08197580A true JPH08197580A (en) 1996-08-06
JP2931225B2 JP2931225B2 (en) 1999-08-09

Family

ID=11688101

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Country Status (1)

Country Link
JP (1) JP2931225B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11138604A (en) * 1997-11-12 1999-05-25 Niigata Eng Co Ltd Auxiliary member for plastication device of injection molding machine and plastication device
JP2003053811A (en) * 2001-08-10 2003-02-26 Toshiba Mach Co Ltd Injection unit for injection molding machine and injection molding machine
JP2015199200A (en) * 2014-04-04 2015-11-12 三菱重工プラスチックテクノロジー株式会社 injection molding machine
JP2016060210A (en) * 2014-09-12 2016-04-25 東芝機械株式会社 Plasticization device, injection device, molding device, and molding manufacturing method
JP2019162723A (en) * 2018-03-19 2019-09-26 東洋機械金属株式会社 Injection molding machine and molding system
JP2020525328A (en) * 2017-07-04 2020-08-27 アイム3デー・ゲーエムベーハーAim3D Gmbh Apparatus and method for extruding thermo-mechanically deformable material in bulk form and compact screw extruder
JP2020182925A (en) * 2019-05-01 2020-11-12 株式会社サンツール Molten hot-melt adhesive supply device using screw type extruder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57120424A (en) * 1980-12-09 1982-07-27 Hehl Karl Grain vessel for plastic injection molding machine with viewing window
JPS5845233U (en) * 1981-09-18 1983-03-26 株式会社日本製鋼所 Extruder hotspa cylinder material supply port
JPH0320127U (en) * 1989-07-07 1991-02-27
JPH03264319A (en) * 1990-03-15 1991-11-25 Toyoda Gosei Co Ltd Molding machine with coloring agent feeding device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57120424A (en) * 1980-12-09 1982-07-27 Hehl Karl Grain vessel for plastic injection molding machine with viewing window
JPS5845233U (en) * 1981-09-18 1983-03-26 株式会社日本製鋼所 Extruder hotspa cylinder material supply port
JPH0320127U (en) * 1989-07-07 1991-02-27
JPH03264319A (en) * 1990-03-15 1991-11-25 Toyoda Gosei Co Ltd Molding machine with coloring agent feeding device

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11138604A (en) * 1997-11-12 1999-05-25 Niigata Eng Co Ltd Auxiliary member for plastication device of injection molding machine and plastication device
JP2003053811A (en) * 2001-08-10 2003-02-26 Toshiba Mach Co Ltd Injection unit for injection molding machine and injection molding machine
JP2015199200A (en) * 2014-04-04 2015-11-12 三菱重工プラスチックテクノロジー株式会社 injection molding machine
JP2016060210A (en) * 2014-09-12 2016-04-25 東芝機械株式会社 Plasticization device, injection device, molding device, and molding manufacturing method
US20170157822A1 (en) * 2014-09-12 2017-06-08 Toshiba Kikai Kabushiki Kaisha Plasticizing device, injection device, molding apparatus, and manufacturing method of molded parts
US10814539B2 (en) 2014-09-12 2020-10-27 Toshiba Kikai Kabushiki Kaisha Plasticizing device, injection device, molding apparatus, and manufacturing method of molded parts
US11376774B2 (en) 2014-09-12 2022-07-05 Shibaura Machine Co., Ltd. Plasticizing device, injection device, molding apparatus, and manufacturing method of molded parts
JP2020525328A (en) * 2017-07-04 2020-08-27 アイム3デー・ゲーエムベーハーAim3D Gmbh Apparatus and method for extruding thermo-mechanically deformable material in bulk form and compact screw extruder
US11597118B2 (en) 2017-07-04 2023-03-07 Aim3D Gmbh Device and method for the extrusion of thermo-mechanically deformable materials in bulk form, and compact screw extruder
JP2019162723A (en) * 2018-03-19 2019-09-26 東洋機械金属株式会社 Injection molding machine and molding system
JP2020182925A (en) * 2019-05-01 2020-11-12 株式会社サンツール Molten hot-melt adhesive supply device using screw type extruder

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