JPS6253324B2 - - Google Patents
Info
- Publication number
- JPS6253324B2 JPS6253324B2 JP54062209A JP6220979A JPS6253324B2 JP S6253324 B2 JPS6253324 B2 JP S6253324B2 JP 54062209 A JP54062209 A JP 54062209A JP 6220979 A JP6220979 A JP 6220979A JP S6253324 B2 JPS6253324 B2 JP S6253324B2
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- die
- resin
- filter
- extruder
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
- B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/69—Filters or screens for the moulding material
- B29C48/692—Filters or screens for the moulding material in the form of webs displaceable for using adjacent areas consecutively
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
【発明の詳細な説明】
本発明は合成樹脂造粒装置、特に大容量押出機
に適した水中造粒装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a synthetic resin granulation device, particularly an underwater granulation device suitable for a large-capacity extruder.
近年、樹脂ペレツトの製造コストの低減のため
に、大量処理ができ、低消費動力で、しかも、操
作性の優れた造粒装置が、各ユーザより要望され
ている。 In recent years, in order to reduce the manufacturing cost of resin pellets, users have been demanding a granulation device that is capable of mass processing, consumes low power, and has excellent operability.
本発明は、これに対応しようとするものであ
る。 The present invention attempts to address this problem.
従来は、第1図及び第2図に示すような水中造
粒装置が使用されている。第1図は円錐形状フイ
ルタを使用した装置を示し、押出機101で溶融
された合成樹脂は、スクリユ102によつて圧送
され、フイルタ103を通り、ダイホルダ105
の内部を通つて多孔ダイス106に送られ紐状で
吐出される。多孔ダイス106の前面には循環す
る冷却水が供給されているため、紐状で吐出され
た合成樹脂は急冷固化され、高速で回転する複数
のカツタナイフによつて一定の長さに切断され、
ペレツトとなつて冷却水と共に脱水スクリーン部
等に移送される。この装置では、押出機101の
先端に設けた不純物等を除去するためのフイルタ
103が不純物等の堆積によつて目詰りを生じ、
フイルタ103の過効率が低下するのでこれを
防止するためにフイルタ103の過面積を広く
して圧力損失を減少するようにフイルタ103を
円錐形状として使用しているが、溶融した合成樹
脂の滞留等を考慮すると、過面積を押出機10
1のシリンダ断面積に比して極端に大きくするこ
とはできず、せいぜい、押出機のシリンダ断面積
に対し50〜100%の過面積を確保することが限
界である。運転時間の経過とともに、不純物等に
よるフイルタ103の目詰りを生じ、フイルタ前
面aの圧力が上昇し、所定の処理量が得られなく
なるばかりでなく、物性の変化すら起るため押出
機101を一旦停止してフイルタ103の交換を
行う必要が生じる。この際の作業としては、カツ
タを停止し、冷却水を排出する作業、押出機の先
端フランジ104からダイホルダのフランジ11
2を取り外しして充満している樹脂を取り除きフ
イルタ103を新しいものに交換する作業、再運
転のために押出機を起動して劣化した又空気を含
む樹脂を、多孔ダイス106から紐状で吐出し、
ウオーターチヤンバ108に設けられた窓109
より人手で取り出す作業、及びカツタを駆動し、
冷却水を導入する作業が必要である。 Conventionally, an underwater granulation device as shown in FIGS. 1 and 2 has been used. FIG. 1 shows an apparatus using a conical filter, in which the synthetic resin melted in an extruder 101 is fed under pressure by a screw 102, passes through a filter 103, and passes through a die holder 105.
The liquid is sent to the multi-hole die 106 through the inside of the tube and discharged in the form of a string. Since circulating cooling water is supplied to the front surface of the multi-hole die 106, the synthetic resin discharged in the form of a string is rapidly cooled and solidified, and cut into a fixed length by a plurality of cutter knives rotating at high speed.
The pellets are transformed into pellets and transferred to a dewatering screen or the like along with the cooling water. In this device, the filter 103 provided at the tip of the extruder 101 for removing impurities etc. becomes clogged due to accumulation of impurities etc.
The overefficiency of the filter 103 decreases, so in order to prevent this, the overarea of the filter 103 is increased to reduce pressure loss and the filter 103 is used in a conical shape. Considering that, the excess area of the extruder 10
The cross-sectional area of the cylinder cannot be made extremely large compared to the cross-sectional area of the cylinder of the extruder, and the limit is at most to ensure an excess area of 50 to 100% with respect to the cross-sectional area of the cylinder of the extruder. As the operating time elapses, the filter 103 becomes clogged with impurities and the pressure on the front surface a of the filter increases, which not only makes it impossible to obtain the desired throughput, but also causes changes in physical properties. It becomes necessary to stop and replace the filter 103. The work at this time is to stop the cutter and drain the cooling water, and from the tip flange 104 of the extruder to the flange 11 of the die holder.
2 to remove the filled resin and replace the filter 103 with a new one, start the extruder for restart, and discharge the degraded and air-containing resin from the porous die 106 in the form of a string. death,
Window 109 provided in water chamber 108
More manual extraction work and driving the cutter,
Work is required to introduce cooling water.
第2図は、フイルタ113の交換を運転中に行
うことを可能とするスクリーンチエンジヤの代表
的な装置を示す。この装置では押出機101の軸
芯に対し直角方向にスライド板110が設けら
れ、図示されていない油圧シリンダ等によつて押
出機101の正面より見て左右に移動可能となつ
ている。スライド板110にはブレーカープレー
ト111とフイルタ113を組合せたものを、滑
動する方向に間隔をおいて2個配置しており、交
互に切換えて過を行うものである。第1図に示
す装置に比較して、この装置ではスクリーンの取
替え作業は省略できる反面、大量の樹脂を処理す
るためには、大口径のブレーカープレートを用い
る必要があり、この場合ブレーカープレート全面
に樹脂圧力を受けるのでブレーカープレートの強
度を充分にとるために、板厚を増す必要があり、
板厚を増すとそのために圧力損失が増大する。従
つて、大量の樹脂を処理する大形造粒装置では圧
力損失が増大する傾向にあつて、単位処理量当り
の消費動力量が増大する。このため、ブレーカー
プレートのサイズにも自ずから限界がある。この
ことは多孔ダイスにも同様に云えることである。 FIG. 2 shows a typical screen changer that allows the filter 113 to be replaced during operation. In this device, a slide plate 110 is provided in a direction perpendicular to the axis of the extruder 101, and is movable left and right when viewed from the front of the extruder 101 by means of a hydraulic cylinder (not shown) or the like. Two combinations of breaker plates 111 and filters 113 are arranged on the slide plate 110 at intervals in the sliding direction, and are switched alternately to perform the filtering. Compared to the device shown in Figure 1, this device can omit the screen replacement work, but in order to process a large amount of resin, it is necessary to use a large-diameter breaker plate, and in this case, the entire surface of the breaker plate is covered. Since the breaker plate is subjected to resin pressure, it is necessary to increase the thickness of the breaker plate to ensure sufficient strength.
Increasing the plate thickness will therefore increase pressure loss. Therefore, in large-sized granulation apparatuses that process a large amount of resin, pressure loss tends to increase, and power consumption per unit throughput increases. Therefore, there is a limit to the size of the breaker plate. This also applies to porous dies.
また、多孔ダイスが平面構造であるために、ダ
イスの大形化に伴つて、カツタ外径も大となり、
水中で合成樹脂を切断するに要する消費動力が増
加する。実績及び試験結果によると、消費動力は
カツタ外径の約2.6乗、刃厚の約1.6乗に比例する
ことが判明している。通常20.000Kg/H程度のカ
ツタに採用されているモータは75KW以上と大容
量のものであり、動力消費の減少が今後の課題と
されている。 In addition, since the porous die has a planar structure, as the die becomes larger, the outer diameter of the cutter also increases.
Power consumption required to cut synthetic resin underwater increases. According to actual experience and test results, it has been found that the power consumption is proportional to the outer diameter of the cutter to the 2.6th power and the blade thickness to the 1.6th power. The motors normally used in cutters with a capacity of around 20,000Kg/H have a large capacity of 75KW or more, and reducing power consumption is an issue for the future.
また、多孔ダイスの大形化に伴うカツタ外径の
増大化につれて、ダイス表面と複数枚のカツタナ
イフとの間隙を一定に保つための高度の芯出し技
術が必要とされている。 Furthermore, as the outer diameter of the cutter increases with the increase in the size of the multi-hole die, a sophisticated centering technique is required to maintain a constant gap between the die surface and the plurality of cutter knives.
また、近時、押出機の性能は、スクリユ等の改
良によつて向上し、小形で大量の樹脂を処理する
ことが可能となつているが、第1図、第2図に示
すような従来形式の造粒装置で大容量の押出機の
処理能力に対応するためには、装置全体が極端に
大形化し、重量も増大し、製作コストの増大、消
費動力の増大を招く結果となる。 In addition, in recent years, the performance of extruders has improved due to improvements in screws, etc., and it has become possible to process large amounts of resin with a small size. In order to accommodate the throughput of a large-capacity extruder using this type of granulation apparatus, the entire apparatus becomes extremely large and heavy, resulting in increased manufacturing costs and increased power consumption.
従来の装置では、上記のような欠点があるの
で、処理能力を増大して、しかも、抵抗を減少さ
して樹脂圧力の増加を防止することによつて押出
機の消費動力を減少さし、かつ、カツテイングの
消費動力も減少さし、更に、ダイス表面とカツタ
ナイフとの芯出し作業を容易な手段で行うことを
目的として、本発明がなされたものである。 Since the conventional equipment has the above-mentioned drawbacks, it is desirable to increase the throughput and reduce the power consumption of the extruder by reducing the resistance and preventing the resin pressure from increasing. The present invention has been made with the aim of reducing the power consumption for cutting, and also to perform centering work between the die surface and the cutter knife by easy means.
本発明の1実施例を、第3図、第4図にもとづ
いて説明する。 One embodiment of the present invention will be described based on FIGS. 3 and 4.
1は押出機の先端部を示し、押出機の内部にス
クリユ2が挿入されている。 1 indicates the tip of the extruder, and a screw 2 is inserted into the extruder.
押出機先端1に本発明になる造粒装置3が押出
機に対して垂直に配置され、押出機口径4と連通
する樹脂流路5と樹脂流路5に開口する中央部が
拡大された円筒状空間6を形成するアダプタ7が
押出機先端1に結合されている。アダプタ7の円
筒状空間6に回転自在にブレーカードラム8が収
納されており、ブレーカードラム8には上、下両
端部に樹脂シール用のリング9が装着され、リン
グ9はアダプタ7の上下両端部に設けた内向きフ
ランジ10に対接して樹脂の漏洩を防止し、又ブ
レーカードラム8の中央部外周に等間隔に円周方
向の溝11を複数個設け、その溝の部分に放射状
に多数のノズル12を設けてある。溝でないラン
ド部13は帯状フイルタ14を案内する。ブレー
カードラム8の内部には多孔部が円錐筒状をし、
上、下にフランジ15a,15bを設けた多孔ダ
イス16が収容されており、上、下部フランジ1
5a,15bはアダプタ7に固定されかつ、この
フランジ15a,15b間にブレーカードラム8
の上、下面が摺動可能に支持されている。ブレー
カードラム8と多孔ダイス16との間にはブレー
カードラム8からの樹脂を多孔ダイス16の全周
面に導く樹脂通路Pが設けられ、又多孔ダイス1
6の上下両端部には樹脂シール用のリング17が
装着され、ブレーカードラム8の上、下両端部と
対接して樹脂の漏洩を防止している。 A granulation device 3 according to the present invention is disposed perpendicularly to the extruder at the extruder tip 1, and a resin flow path 5 communicating with the extruder diameter 4 and a cylinder whose central portion opening to the resin flow path 5 is enlarged. An adapter 7 forming a shaped space 6 is connected to the extruder tip 1. A breaker drum 8 is rotatably housed in the cylindrical space 6 of the adapter 7 . Rings 9 for resin sealing are attached to both upper and lower ends of the breaker drum 8 . In addition, a plurality of circumferential grooves 11 are provided at equal intervals on the outer periphery of the center portion of the breaker drum 8, and a number of radial grooves are provided in the groove portions. A nozzle 12 is provided. The land portion 13, which is not a groove, guides the strip filter 14. Inside the breaker drum 8, a porous portion is shaped like a conical cylinder.
A multi-hole die 16 having upper and lower flanges 15a and 15b is accommodated, and the upper and lower flanges 1
5a, 15b are fixed to the adapter 7, and a breaker drum 8 is connected between the flanges 15a, 15b.
The upper and lower surfaces are slidably supported. A resin passage P is provided between the breaker drum 8 and the porous die 16 to guide the resin from the breaker drum 8 to the entire circumferential surface of the porous die 16.
Rings 17 for resin sealing are attached to both upper and lower ends of the breaker drum 8, and are in contact with both the upper and lower ends of the breaker drum 8 to prevent resin from leaking.
従つて、ブレーカードラム8は多孔ダイス16
に対し、回転自在で、軸方向の移動は拘束されて
いる。又、多孔ダイス16の内部には、刃面が先
端に向けて拡径する円錐形状をしたカツタ18が
設置されており、その刃先は、回転方向に対し、
上向きの推力が作用するように、軸芯に対し第3
図に示す如くθの傾斜角度を有している。カツタ
18はキー19を介してカツタ軸20と結合しボ
ルト41にて固定され、上方に配置されたカツタ
駆動モータ21によつてカツタ駆動装置22を介
して駆動される。そのカツタ駆動装置22は図示
されてないが、カツタ軸20の上、下動を行わせ
る通常の手段が具備され、ハンドル23等によつ
てカツタ軸20の位置調整が行われる構造となつ
ている。多孔ダイス16の上開口部には冷却水筒
24が挿入されており、又カツタ駆動装置22
は、芯出し座金25を介在させてアダプタ7に固
定されている。芯出し座金25の下面は平面で冷
却水筒24の上面に対し摺動可能とし、芯出し座
金25の上面は球面で、カツタ駆動装置22はこ
の球面に対して摺動可能である。また、第4図に
示すように、ブレーカードラム8を外部より回転
させるために、ブレーカードラム8の下端フラン
ジ部にウオームホイール26を設け、これと噛合
するウオーム軸27がアダプタ7に軸支されてい
る。ウオーム軸27は手動ハンドル28又はトル
クシリンダ等の手段により作動さすことができ
る。 Therefore, the breaker drum 8 has a porous die 16
On the other hand, it is rotatable, but movement in the axial direction is restricted. Moreover, a conical cutter 18 whose cutting surface expands in diameter toward the tip is installed inside the multi-hole die 16, and the cutting edge is arranged in the direction of rotation.
In order to apply an upward thrust, the third
As shown in the figure, it has an inclination angle of θ. The cutter 18 is connected to a cutter shaft 20 via a key 19 and fixed with a bolt 41, and is driven via a cutter drive device 22 by a cutter drive motor 21 disposed above. Although the cutter drive device 22 is not shown, it is equipped with ordinary means for moving the cutter shaft 20 upward and downward, and is structured so that the position of the cutter shaft 20 is adjusted by a handle 23 or the like. . A cooling water cylinder 24 is inserted into the upper opening of the multi-hole die 16, and a cutter driving device 22 is inserted into the upper opening of the multi-hole die 16.
is fixed to the adapter 7 with a centering washer 25 interposed therebetween. The lower surface of the centering washer 25 is flat and can be slid on the upper surface of the cooling water cylinder 24, and the upper surface of the centering washer 25 is spherical, and the cutter drive device 22 can be slid on this spherical surface. Further, as shown in FIG. 4, in order to rotate the breaker drum 8 from the outside, a worm wheel 26 is provided at the lower end flange portion of the breaker drum 8, and a worm shaft 27 that meshes with the worm wheel 26 is pivotally supported by the adapter 7. There is. The worm shaft 27 can be actuated by means such as a manual handle 28 or a torque cylinder.
また、フイルタとしては帯状フイルタ14が使
用される。アダプタ7には、帯状フイルタ14の
形状に適合する長方形の溝状のフイルタ入口3
0、フイルタ出口31を設け、その溝巾は、入口
巾H1<出口巾H2とし、更に、その溝状のフイル
タ入口30、フイルタ出口31を冷却ジヤケツト
32で包囲して、樹脂を冷却固化させて、樹脂シ
ールをさせるためにフイルタガイド33が設けら
れている。帯状フイルタ14はそのフイルタガイ
ド33を通つてブレーカードラム8の外周のほぼ
全周にわたつて巻きつけられている。 Further, a band-shaped filter 14 is used as the filter. The adapter 7 has a rectangular groove-shaped filter inlet 3 that matches the shape of the strip filter 14.
0, a filter outlet 31 is provided, the groove width of which is set such that inlet width H 1 < outlet width H 2 , and the groove-shaped filter inlet 30 and filter outlet 31 are surrounded by a cooling jacket 32 to cool and solidify the resin. A filter guide 33 is provided to perform a resin seal. The band-shaped filter 14 is wound around almost the entire outer circumference of the breaker drum 8 through its filter guide 33.
また、切断された樹脂(ペレツト)を冷却する
冷却水は、冷却水筒24の配管24bよりカツタ
軸20の周囲を通り、カツタ18と多孔ダイス1
6の内面との間隙を経て多孔ダイスの下フランジ
15bと結合された3方切換弁34を通つて、そ
れぞれのラインに送られる。冷却水の導入による
多孔ダイス16の放熱を防止するために多孔ダイ
ス16の上部の冷却水筒24の挿入部には間隙を
設けて断熱層24aを、また、多孔ダイス16の
下部には、多孔ダイス16の内壁との間に間隙を
設けてスリーブ35を挿入して断熱層35aを形
成してある。更に、多孔ダイス16の上部及び下
部にそれぞれ環状の上部ジヤケツト36、下部ジ
ヤケツト37を設け両ジヤケツト間を、各ノズル
間を縦方向に貫通するノズル加熱媒体用通路38
によつて連通さす。なお、上部、下部のジヤケツ
ト36,37には加熱媒体出入口を設ける。 Further, the cooling water for cooling the cut resin (pellets) passes around the cutter shaft 20 from the pipe 24b of the cooling water cylinder 24, and flows into the cutter 18 and the porous die 1.
6 and the three-way switching valve 34 connected to the lower flange 15b of the multi-hole die to the respective lines. In order to prevent heat dissipation from the porous die 16 due to the introduction of cooling water, a gap is provided at the insertion part of the cooling water cylinder 24 at the upper part of the porous die 16, and a heat insulating layer 24a is provided at the lower part of the porous die 16. A sleeve 35 is inserted with a gap between the sleeve 35 and the inner wall of the sleeve 16 to form a heat insulating layer 35a. Furthermore, an annular upper jacket 36 and an annular lower jacket 37 are provided at the upper and lower parts of the multi-hole die 16, respectively, and a nozzle heating medium passage 38 is provided between the two jackets and extends vertically between each nozzle.
Communicate by. Note that the upper and lower jackets 36 and 37 are provided with heating medium inlets and outlets.
本発明になる合成樹脂造粒装置は、上記のよう
に構成されているので、押出機先端部1から出た
熔融樹脂は帯状フイルタ14を通過して、ブレー
カードラム8の溝11に設けたノズル12を通過
し、全周から多孔ダイス16に流入し、冷却水に
より冷却固化された紐状樹脂は、堅型のカツタ1
8によつて切断され、ペレツトとなつて冷却水と
共に移送される。 Since the synthetic resin granulation device according to the present invention is configured as described above, the molten resin coming out of the extruder tip 1 passes through the band-shaped filter 14 and passes through the nozzle provided in the groove 11 of the breaker drum 8. 12, flows from the entire circumference into the porous die 16, and is cooled and solidified by cooling water.
8, the pellets are cut into pellets, and transported together with cooling water.
また、運転前の作業は、芯出しが適正であれ
ば、ハンドル23を回転させて多孔ダイス16の
内壁の円錐部とカツタ18の外径の円錐部の形状
が合致するまで、カツタ軸20を上部方向に移動
させればよいが、第5図に示すように多孔ダイス
16の内壁の円錐部の軸芯に対して、カツタ軸2
0の軸芯がαの角度だけ傾斜している場合には、
カツタ駆動装置22の取付ボルト39を緩め、ハ
ンドル23を回転して、多孔ダイス16の内壁の
円錐部とカツタ18の外径の円錐部の形状が合致
するまで、カツタ軸20を上方に移動さすことに
よつてカツタ駆動装置22を芯出し座金25を介
して摺動させて芯出しを行い、芯出し後取付ボル
ト39を締めつける。また、運転開始前のダイス
からの樹脂のたれ流し作業は、第3図に示す3方
切換弁34の弁40を左上方に切替えて、下方向
に紐状で押出すことによつて行われる。 In addition, if the centering is proper, the work before operation is to rotate the handle 23 and rotate the cutter shaft 20 until the shape of the conical part of the inner wall of the multi-hole die 16 matches the shape of the conical part of the outer diameter of the cutter 18. The cutter shaft 2 may be moved upwardly, but as shown in FIG.
If the axis of 0 is tilted by the angle α, then
Loosen the mounting bolt 39 of the cutter drive device 22, rotate the handle 23, and move the cutter shaft 20 upward until the shape of the conical part of the inner wall of the multi-hole die 16 matches the shape of the conical part of the outer diameter of the cutter 18. By sliding the cutter drive device 22 through the centering washer 25, centering is performed, and after centering, the mounting bolt 39 is tightened. Further, the operation of pouring the resin from the die before the start of operation is performed by switching the valve 40 of the three-way switching valve 34 shown in FIG. 3 to the upper left position and extruding the resin downward in the form of a string.
本発明になる合成樹脂造粒装置においては、
1 ブレーカードラム及び多孔ダイスを曲面構造
として、樹脂圧力を外周から受ける構造とした
ので、従来の平面構造のブレーカープレート及
び平面構造のダイスとは異なり、強度上有利と
なり、その板厚を従来の平面構造のものより薄
くすることができる利点がある。 In the synthetic resin granulation apparatus according to the present invention, 1. The breaker drum and the porous die have a curved structure and are structured to receive resin pressure from the outer periphery, so unlike the conventional breaker plate and die with a planar structure, It is advantageous in terms of strength and has the advantage that its plate thickness can be made thinner than that of a conventional planar structure.
2 処理能力の増大に対処して、ブレーカードラ
ム及びダイスの板厚を一定にして、両者のノズ
ルを軸方向に多段に配置することによつて、従
来の装置では、ブレーカープレート及びダイス
の面積が直径方向に、直径の2乗に比例して増
大するのに比較して、軸方向にかわるため、そ
れぞれの面積は直径の1乗に比例することとな
り、大巾な重量軽減となる。2 In order to cope with the increase in processing capacity, the area of the breaker plate and die can be reduced in conventional equipment by keeping the plate thickness of the breaker drum and die constant and arranging the nozzles of both in multiple stages in the axial direction. Compared to the increase in the diameter direction in proportion to the square of the diameter, the change in the axial direction causes each area to be proportional to the first power of the diameter, resulting in a significant weight reduction.
3 また、ブレーカードラム及びダイスの板厚が
薄くなり、ブレーカードラム及びダイスのノズ
ルの樹脂抵抗を減少させ、押出機の消費動力の
減少に役立つ。3. In addition, the plate thickness of the breaker drum and die becomes thinner, which reduces the resin resistance of the nozzle of the breaker drum and die, which helps to reduce the power consumption of the extruder.
4 また、従来の場合、処理能力の増大のために
は、ダイスの外径方向にノズル数を増加する必
要があるため、カツタ外径口もそれに応じて大
となり、カツタ刃も長くなるために、強度上刃
の厚さTも厚くする必要がある。前記した通
り、カツタの消費動力はカツタ外径の約2.6乗
に比例し、刃の厚さの約1.6乗に比例すること
が判明しているが、本発明によると処理能力が
増大してもカツタ外径はほとんど大きくする必
要がなく、刃の厚さのみ変化し、しかも最大外
径も従来の外径よりも小さくてすむので、カツ
タの消費動力も大巾な減少が見込まれる。4 In addition, in the conventional case, in order to increase processing capacity, it is necessary to increase the number of nozzles in the direction of the outer diameter of the die, so the outer diameter of the cutter also increases accordingly, and the cutter blade also becomes longer. , it is also necessary to increase the thickness T of the blade for strength. As mentioned above, it has been found that the power consumption of a cutter is proportional to the outer diameter of the cutter to the 2.6th power, and to the thickness of the blade to the 1.6th power, but according to the present invention, even if the processing capacity increases, There is no need to increase the outer diameter of the cutter, only the thickness of the blade changes, and the maximum outer diameter can also be smaller than the conventional outer diameter, so the power consumption of the cutter is expected to be significantly reduced.
5 運転前の芯出し作業は、芯出し座金の組込み
によつてカツタ軸の移動を行うことで簡単に行
える。5. Centering work before operation can be easily performed by moving the cutter shaft by incorporating a centering washer.
6 運転時において、従来の水平カツタ軸では、
カツタ軸が片持ち状態にあるため、ベアリング
等のギヤツプの影響を受けて軸振れを生じる
が、本発明によるとカツタ軸が垂直に配置され
ているので、カツタ軸は軸振れを生じ難く、又
カツタは上方で支持され先端に向けて拡径する
円錐形のカツタの刃先は回転方向に対し、上向
きの推力が作用するように傾斜角度を与えられ
ている。従つてダイス表面とカツタ刃の隙間を
一定に保持できる。6 During operation, with a conventional horizontal cutter shaft,
Since the cutter shaft is in a cantilevered state, shaft runout occurs due to the influence of gaps such as bearings. However, according to the present invention, since the cutter shaft is arranged vertically, the cutter shaft is less likely to cause shaft runout. The cutter is supported at the top, and the cutting edge of the conical cutter whose diameter increases toward the tip is inclined at an angle with respect to the direction of rotation so that an upward thrust acts on the cutter. Therefore, the gap between the die surface and the cutter blade can be maintained constant.
7 ダイスからの樹脂のたれ流し作業は、従来装
置では、ウオーターチヤンバの窓より紐状で吐
出する溶融樹脂を人手で取り出して行つていた
が、この作業が自動化され、たれ流し作業終了
後は3方切換弁を切換えて容易に正常の連続運
転に移行することができる。7. With conventional equipment, the process of pouring resin from the die was carried out by manually taking out the molten resin that was discharged in the form of a string from the window of the water chamber, but this work has been automated, and after the pouring process is completed, three It is possible to easily shift to normal continuous operation by switching the one-way switching valve.
8 多孔ダイスを運転開始前のダイスからのたれ
流し樹脂の排出方向に拡径する円錐筒状とした
ので、樹脂のたれ流しが容易となり、又3方切
換弁を多孔ダイスの下フランジより取外すこと
により、カツタを容易に取り出して手入れや、
取り替えができる。8. The multi-hole die is shaped into a conical cylinder whose diameter expands in the direction of discharging the resin that drips from the die before the start of operation, making it easy to drain the resin, and by removing the three-way switching valve from the lower flange of the multi-hole die. You can easily take out the katsuta and clean it.
Can be replaced.
第1図、第2図は、従来のプラスチツク造粒装
置の要部断面図であり、第2図ではスクリーンチ
エンジヤが用いられている。第3図は、本発明に
よる装置の要部の縦断面図で、第4図のA―A断
面を示す。第4図は、第3図の―断面図、第
5図は、カツタ軸の芯とダイスの芯とが狂つた状
態を示す。
1…押出機先端、3…造粒装置、5…樹脂流
路、6…円筒状空間、7…アダプタ、8…ブレー
カードラム、14…帯状フイルタ、16…多孔ダ
イス、18…カツタ、20…カツタ軸、22…カ
ツタ駆動装置、24…冷却水筒、25…芯出し座
金、26…ウオームホイール、30…フイルタ入
口、31…フイルタ出口、34…3方切換弁、3
6,37…上部及び下部ジヤケツト。
FIGS. 1 and 2 are sectional views of main parts of a conventional plastic granulation device, and in FIG. 2, a screen changer is used. FIG. 3 is a longitudinal sectional view of the main part of the device according to the present invention, taken along the line AA in FIG. 4. FIG. 4 is a cross-sectional view of FIG. 3, and FIG. 5 shows a state in which the center of the cutter shaft and the center of the die are misaligned. DESCRIPTION OF SYMBOLS 1... Extruder tip, 3... Granulation device, 5... Resin channel, 6... Cylindrical space, 7... Adapter, 8... Breaker drum, 14... Strip filter, 16... Porous die, 18... Katsu, 20... Katsuta Shaft, 22... Cutter drive device, 24... Cooling water cylinder, 25... Centering washer, 26... Worm wheel, 30... Filter inlet, 31... Filter outlet, 34... Three-way switching valve, 3
6, 37... Upper and lower jackets.
Claims (1)
に直角の円筒状空間6と、樹脂流路5のほぼ反対
側にフイルタ入口30とフイルタ出口31とを設
けたアダプタ7の円筒状空間6の内部に、周囲に
多数のノズル孔12を穿孔し外周表面で帯状フイ
ルタ14を案内する円筒状のブレーカードラム8
を回転可能に配置し、ブレーカードラム8の内部
には先端に向けて拡径し軸芯に対して傾斜角度を
もつ刃先を有する円錐形のカツタ18を収容する
円錐筒状の多孔ダイス16を樹脂をその全周面に
導く樹脂通路Pを介して配置し、カツタ18を取
付けたカツタ軸20の上下動を可能とするカツタ
駆動装置22を多孔ダイス16の上部に設けた球
面をなす芯出し座金25を介してアダプタ7に固
定し、多孔ダイス16の上部に冷却水筒24を、
下部に3方切換弁34を配設したことを特徴とす
る合成樹脂造粒装置。1. A resin flow path 5 communicating with the extruder diameter 4, a cylindrical space 6 perpendicular to this, and a cylindrical space of an adapter 7 provided with a filter inlet 30 and a filter outlet 31 on substantially opposite sides of the resin flow path 5. 6, a cylindrical breaker drum 8 with a number of nozzle holes 12 formed around the periphery and guiding a strip filter 14 on its outer peripheral surface.
is arranged rotatably, and inside the breaker drum 8 is a conical cylindrical porous die 16 made of resin and housing a conical cutter 18 having a cutting edge that expands in diameter toward the tip and has an inclined angle with respect to the axis. A spherical centering washer is provided on the upper part of the multi-hole die 16 with a cutter drive device 22 arranged through a resin passage P leading to the entire circumference of the die and capable of vertically moving a cutter shaft 20 to which a cutter 18 is attached. 25 to the adapter 7, and a cooling water cylinder 24 is placed above the multi-hole die 16.
A synthetic resin granulation device characterized in that a three-way switching valve 34 is provided at the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6220979A JPS55154112A (en) | 1979-05-22 | 1979-05-22 | Plastic granulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6220979A JPS55154112A (en) | 1979-05-22 | 1979-05-22 | Plastic granulating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55154112A JPS55154112A (en) | 1980-12-01 |
| JPS6253324B2 true JPS6253324B2 (en) | 1987-11-10 |
Family
ID=13193509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6220979A Granted JPS55154112A (en) | 1979-05-22 | 1979-05-22 | Plastic granulating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55154112A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62167012A (en) * | 1986-01-21 | 1987-07-23 | Teijin Eng Kk | Granulating equipment |
| US5085815A (en) * | 1989-12-26 | 1992-02-04 | Exxon Chemical Patents Inc. | Process of recovering and conveying shaped polymer extrudate |
| DE19704621A1 (en) * | 1997-01-14 | 1998-09-24 | Josef Gail | Device for cleaning viscous material |
| WO2016174152A1 (en) * | 2015-04-29 | 2016-11-03 | Fabbri, Alessandro | Breaker element, screenchanger arrangement, extrusion line and method of extruding an extrusion part |
| EP3960422B1 (en) * | 2020-09-01 | 2022-11-16 | Fimic S.r.l. | Device for the continuous filtration of molten plastic material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5196857A (en) * | 1975-02-20 | 1976-08-25 | Oshidashikino jidoromokokansochi | |
| JPS5214656A (en) * | 1975-07-25 | 1977-02-03 | Japan Steel Works Ltd | Submarged pelletizer of extruder |
-
1979
- 1979-05-22 JP JP6220979A patent/JPS55154112A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55154112A (en) | 1980-12-01 |
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