JPH07266Y2 - Injection molding machine with visualization heating cylinder - Google Patents
Injection molding machine with visualization heating cylinderInfo
- Publication number
- JPH07266Y2 JPH07266Y2 JP5180991U JP5180991U JPH07266Y2 JP H07266 Y2 JPH07266 Y2 JP H07266Y2 JP 5180991 U JP5180991 U JP 5180991U JP 5180991 U JP5180991 U JP 5180991U JP H07266 Y2 JPH07266 Y2 JP H07266Y2
- Authority
- JP
- Japan
- Prior art keywords
- heating cylinder
- glass body
- screw
- screw hole
- injection molding
- 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 - Lifetime
Links
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、可視化加熱筒を備えた
射出成形機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molding machine equipped with a visualization heating cylinder.
【０００２】[0002]
【従来の技術】従来、図６に示すように、根端部にホッ
パ１を、先端に射出ノズル（以下、単にノズルという）
２を、内部に回転自在にかつ軸線方向に進退自在にスク
リュ３をそれぞれ備えた加熱筒４が、本体５に加熱筒４
の軸線方向に移動自在に設けられ、本体５上の前記ノズ
ル２の先方に間隔をおいて設けられた固定盤６とエンド
プレート７との間に、タイロッド８を介して移動自在に
可動盤９が設けられ該可動盤９と前記固定盤６との間に
型締め可能に取り付けられた金型１０内に、ホッパ１よ
り加熱筒４内に供給された樹脂をノズル２から射出して
成形を行う射出成形機が知られている。2. Description of the Related Art Conventionally, as shown in FIG. 6, a hopper 1 is provided at a root end and an injection nozzle (hereinafter simply referred to as a nozzle) is provided at a tip.
2, a heating cylinder 4 having a screw 3 rotatably therein and capable of advancing and retracting in the axial direction, is provided on a main body 5.
Of the movable plate 9 movably through a tie rod 8 between a fixed plate 6 and an end plate 7 which are provided movably in the axial direction of the main body 5 and are provided in front of the nozzle 2 on the main body 5 with a space therebetween. Is provided with a movable plate 9 and the fixed plate 6 so that the mold can be clamped, and the resin supplied from the hopper 1 into the heating cylinder 4 is injected from the nozzle 2 to perform molding. Injection molding machines that perform are known.
【０００３】この種の射出成形機においては、スクリュ
３が回転用駆動装置で周方向に回転させられている状態
でスクリュ３のねじ部に樹脂材料が供給されることによ
り、この樹脂材料がスクリュ３のねじ送り作用によって
ノズル２側へ送給されることにより可塑化され、このノ
ズル２側ヘ送給された樹脂の背圧でスクリュ３が後退さ
せられ、この後退させられたスクリュ３の後退距離によ
って溶融樹脂が計量され、スクリュ３が設定位置まで後
退させられた時点で、このスクリュ３の回転が停止させ
られ、次に、進退用駆動装置により加熱筒４が前進させ
られ、型閉じ状態の金型１０の射出樹脂入口へノズル２
が当接させられ、この後、移動用駆動装置によりスクリ
ュ３が予め設定された前進位置まで前進（成形中におい
ては予めスクリュ３の前進，後退位置が設定されてい
る。）させられることにより、金型１０内のキャビティ
にノズル２より溶融樹脂が射出されるようになってい
る。In this type of injection molding machine, a resin material is supplied to the screw portion of the screw 3 while the screw 3 is being rotated in the circumferential direction by a rotation driving device, so that the resin material is screwed. When the screw 3 is fed to the nozzle 2 side by the screw feeding action of the resin 3, the screw 3 is retracted by the back pressure of the resin fed to the nozzle 2 side, and the retracted screw 3 is retracted. The molten resin is measured by the distance, and when the screw 3 is retracted to the set position, the rotation of the screw 3 is stopped, and then the heating / removing cylinder 4 is advanced by the advancing / retreating drive device to close the mold. Nozzle 2 to the injection resin inlet of the mold 10
Are brought into contact with each other, and thereafter, the screw 3 is moved forward by the moving drive device to a preset forward position (the forward and backward positions of the screw 3 are preset during molding). Molten resin is injected from the nozzle 2 into the cavity in the mold 10.
【０００４】ところで、近年、加熱筒４への供給樹脂材
料が多種類にわたり、成形条件が多様化した等の理由に
より、成形品の品質や、精度の向上が要望されている。
そこで、この要望に応えるために、加熱筒４内に供給さ
れた樹脂やスクリュの挙動を加熱筒４の外部から観察す
ることができるようにした射出成形機が知られている。By the way, in recent years, there have been demands for improvement in quality and precision of molded products due to various kinds of resin materials supplied to the heating cylinder 4 and diversification of molding conditions.
Therefore, in order to meet this demand, an injection molding machine is known in which the behavior of the resin and the screw supplied into the heating cylinder 4 can be observed from the outside of the heating cylinder 4.
【０００５】例えば、図７ないし図９に示す第１の射出
成形機においては、加熱筒４の外周側開口面積より内周
側開口面積が小さくなるように深さ方向に段が形成され
た長穴１１が、加熱筒４の周壁を貫通してこの周壁（例
えば加熱筒４の周壁の正面あるいは上面部）に、この加
熱筒４の軸線方向に所定の間隔をおいて複数形成されて
いる。長穴１１には、この長穴１１の内部形状に一致す
る形状のガラス体１２が嵌入されている。また、加熱筒
４の外周面には、ガラス体１２の嵌入部において平面状
の切欠部１３が形成されており、この切欠部１３には、
加熱筒４からのガラス体１２の抜け出しを防止する鍔板
１４が取付ボルト１５により止め付けられている。鍔板
１４の中央部には長穴状の観察窓１６が形成されてい
る。For example, in the first injection molding machine shown in FIGS. 7 to 9, a length in which a step is formed in the depth direction such that the inner peripheral side opening area of the heating cylinder 4 is smaller than the outer peripheral side opening area. A plurality of holes 11 are formed through the peripheral wall of the heating cylinder 4 on the peripheral wall (for example, the front surface or the upper surface of the peripheral wall of the heating cylinder 4) at predetermined intervals in the axial direction of the heating cylinder 4. A glass body 12 having a shape matching the internal shape of the long hole 11 is fitted into the long hole 11. Further, on the outer peripheral surface of the heating cylinder 4, a flat notch 13 is formed in the fitting portion of the glass body 12, and the notch 13 has
A collar plate 14 for preventing the glass body 12 from coming out of the heating cylinder 4 is fixed by a mounting bolt 15. An elongated observation window 16 is formed in the center of the collar plate 14.
【０００６】また、図１０ないし図１２に示す第２の射
出成形機においては、加熱筒４の内周側に、加熱筒４の
軸線方向に延びる角溝２１が形成されている。この角溝
２１内には、この角溝２１の内部形状に一致する形状の
所定長さの複数のガラス体２２が互いの間にガラスとは
異質の材質（例えば金属）からなるスペーサ２３を介在
させられて嵌入されている。また、加熱筒４の外周壁に
はガラス体２２と対向して観察窓２４が形成されてい
る。なお、前記ガラス体２２は一連の長いものとされ、
ガラス体２２間のスペーサ２３はなくされた構成のもの
もある。Further, in the second injection molding machine shown in FIGS. 10 to 12, a square groove 21 extending in the axial direction of the heating cylinder 4 is formed on the inner peripheral side of the heating cylinder 4. In the square groove 21, a plurality of glass bodies 22 each having a predetermined length and having a shape corresponding to the internal shape of the square groove 21 are provided with a spacer 23 made of a material (for example, metal) different from glass between them. It is made to be inserted. An observation window 24 is formed on the outer peripheral wall of the heating cylinder 4 so as to face the glass body 22. The glass body 22 is a series of long ones,
In some cases, the spacer 23 between the glass bodies 22 is eliminated.
【０００７】さらに、特開平２−２３５７１５号公報に
開示されている第３の射出成形機においては、図１３な
いし図１５に示すように、加熱筒４の周壁内にその軸線
方向に沿って形成された円形穴３１に、この円形穴３１
に合致する断面をもつ円柱状の複数のガラス体３２が互
いの間にスペーサ３３を介在させられて嵌入されてい
る。また、加熱筒４の半径線上に位置してガラス体３２
に対向し、加熱筒４の周壁の外面から円形穴３１に達す
る長穴状の観察窓３４と、円形穴３１とスクリュ穴４ａ
とを連通する長穴状の切欠き３５とが、加熱筒４の軸線
方向に沿って間隔をおいて形成されている。さらに加熱
筒４には、円形穴３１の両側において、スクリュ穴４ａ
の中心と円形穴３１の中心とを結ぶ半径線と直交する方
向に位置しかつ円形穴３１と連通するスリット３６が加
熱筒４の軸線方向に沿って形成されている。そして、ガ
ラス体３２は、スリット３６と直交するねじ穴に螺合さ
れたねじ３７が締め込まれスリット３６が狭められるこ
とにより加熱筒４に固定されるようにされている。な
お、前記ガラス体３２は一連の長いものとされ、ガラス
体３２間のスペーサ３３はなくされた構成のものもあ
る。Further, in the third injection molding machine disclosed in Japanese Patent Application Laid-Open No. 2-235715, as shown in FIGS. 13 to 15, the heating cylinder 4 is formed in the circumferential wall along the axial direction thereof. This circular hole 31
A plurality of cylindrical glass bodies 32 having a cross section that matches the above are inserted with a spacer 33 interposed therebetween. Further, the glass body 32 is located on the radial line of the heating cylinder 4.
, The observation window 34 in the shape of an elongated hole reaching the circular hole 31 from the outer surface of the peripheral wall of the heating cylinder 4, the circular hole 31, and the screw hole 4a.
Slotted notches 35 that communicate with and are formed at intervals along the axial direction of the heating cylinder 4. Further, the heating cylinder 4 has screw holes 4a on both sides of the circular hole 31.
A slit 36, which is located in a direction orthogonal to a radial line connecting the center of the circular hole 31 and the center of the circular hole 31 and communicates with the circular hole 31, is formed along the axial direction of the heating cylinder 4. Then, the glass body 32 is fixed to the heating cylinder 4 by tightening a screw 37 screwed into a screw hole orthogonal to the slit 36 to narrow the slit 36. The glass body 32 may be a series of long ones, and the spacer 33 between the glass bodies 32 may be eliminated.
【０００８】[0008]
【考案が解決しようとする課題】前記第１の射出成形機
においては、加熱筒４の外周面より鍔板１４や取付ボル
ト１５の頭部が突出し、加熱筒４の外周へのヒータバン
ドの取付けが困難になり、かつ加熱筒内の樹脂の圧力に
より取付ボルト１５に大きな応力が作用するため、強度
的に外径が大きい取付ボルト１５を使用しなければなら
ないので全体として大型化するという問題があった。ま
た、第２の射出成形機においては、加熱筒４内にスクリ
ュ３が挿入されていない状態では、角溝２１にガラス体
２２が嵌入されているだけであるので、このガラス体２
２が角溝２１からその内側へ外れ易く、また加熱筒４内
にスクリュ３が挿入された場合でも、加熱筒４の内周面
とスクリュ３との間に隙間が設けてあるので、ガラス体
２２が遊動しスクリュ３に当たる欠点があった。また、
第３の射出成形機においては、ガラス体３２が嵌入され
た円形穴３１とスクリュ３との間の切欠き３５の凹所部
分に、加熱筒４への供給樹脂材料が入り込み、加熱筒４
の内部が観察困難となる。そこで、ガラス体３２の外周
とスクリュ３の外周とが接する寸前状態となるように切
欠き３５を小さくしたとしても、ガラス体３２とスクリ
ュ３との対向側においては、ガラス体３２の外周曲面と
スクリュ３の外周曲面とが互いに逆向きに湾曲している
ので、やはりこの切欠き３５の部分に供給樹脂材料が入
り込み、加熱筒４の内部が観察困難となる。さらに、こ
の射出成形機においては、ガラス体３２が円形断面であ
り極端な凸レンズとなりレンズ作用をもつため、ガラス
体３２を通しての加熱筒４内のスクリュ３あるいは供給
樹脂の像が歪み、このことによっても加熱筒４の内部が
観察困難となるという問題があった。In the first injection molding machine, the heads of the collar plate 14 and the mounting bolts 15 project from the outer peripheral surface of the heating cylinder 4 to mount the heater band on the outer periphery of the heating cylinder 4. However, since a large stress acts on the mounting bolt 15 due to the pressure of the resin in the heating cylinder, the mounting bolt 15 having a large outer diameter in terms of strength must be used, so that there is a problem that the overall size increases. there were. Further, in the second injection molding machine, since the glass body 22 is only fitted in the square groove 21 when the screw 3 is not inserted in the heating cylinder 4, this glass body 2
2 easily disengages from the square groove 21 to the inside thereof, and even when the screw 3 is inserted into the heating cylinder 4, since a gap is provided between the inner peripheral surface of the heating cylinder 4 and the screw 3, the glass body There was a drawback that 22 moved and hit the screw 3. Also,
In the third injection molding machine, the resin material supplied to the heating cylinder 4 enters the recessed portion of the notch 35 between the circular hole 31 into which the glass body 32 is fitted and the screw 3, and the heating cylinder 4
It becomes difficult to observe the inside. Therefore, even if the notch 35 is made small so that the outer periphery of the glass body 32 and the outer periphery of the screw 3 are in contact with each other, the outer peripheral curved surface of the glass body 32 is formed on the opposite side of the glass body 32 and the screw 3. Since the outer peripheral curved surface of the screw 3 is curved in a direction opposite to each other, the supplied resin material also enters the notch 35 portion, which makes it difficult to observe the inside of the heating cylinder 4. Further, in this injection molding machine, since the glass body 32 has a circular cross section and serves as an extremely convex lens and has a lens function, the image of the screw 3 or the supplied resin in the heating cylinder 4 through the glass body 32 is distorted. However, there is a problem that it becomes difficult to observe the inside of the heating cylinder 4.
【０００９】本考案は、前記事情に鑑みてなされたもの
で、ガラス体が所定位置に確実に固定され、加熱筒内を
容易に観察することができる可視化加熱筒を備えた射出
成形機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, and provides an injection molding machine provided with a visualization heating tube in which a glass body is securely fixed at a predetermined position and the inside of the heating tube can be easily observed. The purpose is to do.
【００１０】[0010]
【課題を解決するための手段】上記の目的を達成するた
めに、本考案は、射出ノズルが先端に備えられた加熱筒
の軸線方向に沿って該加熱筒内に形成された断面円形の
スクリュ穴に、移動用駆動装置で軸方向に動かされ回転
用駆動装置で周方向に回転させられる射出スクリュが挿
入された射出成形機において、断面形状が半円より大き
い欠円形の丸溝が、前記スクリュ穴に連通させられて前
記加熱筒の周壁に該加熱筒の軸線方向に沿って形成さ
れ、前記丸溝には、前記スクリュ穴側が該スクリュ穴の
内周と合致し前記加熱筒の周壁側が前記丸溝の円弧面に
合致する断面形状を有する棒状のガラス体が、前記スク
リュ穴側面が該スクリュ穴の内周面と合致するように嵌
入され、前記加熱筒の周壁の前記ガラス体に対向する箇
所には、前記スクリュ穴と丸溝の各中心を通るスクリュ
穴の直径線上に位置し、前記加熱筒の外部と前記丸溝内
とを連通する長穴状の観察窓が前記加熱筒の軸線方向に
沿って形成され、前記ガラス体は、前記加熱筒の周壁に
螺合され、前記ガラス体に当接された複数のねじにより
前記加熱筒に締め付け固定された構成とした。In order to achieve the above object, the present invention provides a screw having a circular cross section formed in the heating cylinder along the axial direction of the heating cylinder having an injection nozzle at its tip. In an injection molding machine in which an injection screw that is moved in the axial direction by a moving drive device and rotated in a circumferential direction by a rotating drive device is inserted into the hole, a circular groove having a circular cross section larger than a semicircle, It is made to communicate with the screw hole and is formed along the axial direction of the heating cylinder on the peripheral wall of the heating cylinder, and in the round groove, the screw hole side matches the inner circumference of the screw hole, and the peripheral wall side of the heating cylinder is A rod-shaped glass body having a cross-sectional shape that matches the circular arc surface of the round groove is fitted so that the screw hole side surface matches the inner peripheral surface of the screw hole, and faces the glass body of the peripheral wall of the heating cylinder. In the place where A slotted observation window located on the diameter line of a screw hole passing through each center of the hole and the circular groove and connecting the outside of the heating cylinder and the inside of the circular groove is formed along the axial direction of the heating cylinder. The glass body is screwed onto the peripheral wall of the heating cylinder and is fastened and fixed to the heating cylinder by a plurality of screws abutting on the glass body.
【００１１】[0011]
【作用】前記構成によれば、射出スクリュを作動させて
加熱筒内の供給樹脂材料の可塑化、射出、排出等を行う
場合、射出スクリュを回転用駆動装置で回転させるかあ
るいは移動用駆動装置で軸方向に移動させる。これら供
給樹脂材料の可塑化、射出、排出等を行うスクリュの作
動時には、ガラス体が加熱筒に固定されているのでガラ
ス体ががたつくこともスクリュに当ることもない。ま
た、このスクリュの作動時には、ガラス体が丸溝の内周
面に押し付けられているので、加熱筒内はガラス体によ
り密封されるため、加熱筒内の供給樹脂が外部に漏れる
ことはない。また前記スクリュの作動時には、丸溝に嵌
入されたガラス体のスクリュ穴側の円弧面が加熱筒の内
周面と合致しているので、従来例の前記第３の射出成形
機における切欠きに樹脂が入るようなことはなくなり、
さらに、このガラスは第３の射出成形機の公知例のよう
に円形ではないので、極端な凸レンズとならずレンズ作
用も少なくなり、ガラス体を通しての観察像の歪も少な
くなり、加熱筒内のスクリュあるいは供給樹脂の挙動
が、ガラス体を通して観察者の目視により確認し得るよ
うになる。According to the above construction, when the injection screw is operated to plasticize, inject, and discharge the resin material supplied in the heating cylinder, the injection screw is rotated by the rotation drive device or the movement drive device. Move in the axial direction with. During operation of the screw for plasticizing, injecting, and discharging the supplied resin material, the glass body is fixed to the heating cylinder, so that the glass body does not rattle or hit the screw. In addition, since the glass body is pressed against the inner peripheral surface of the round groove during the operation of the screw, the inside of the heating cylinder is sealed by the glass body, so that the supplied resin in the heating cylinder does not leak to the outside. Further, when the screw is operated, the circular arc surface of the glass body fitted in the round groove on the screw hole side matches the inner peripheral surface of the heating cylinder, so that the cutout in the third injection molding machine of the conventional example is formed. Resin will not enter,
Furthermore, since this glass is not circular like the known example of the third injection molding machine, it does not become an extremely convex lens and the lens action is reduced, the distortion of the observed image through the glass body is reduced, and the inside of the heating cylinder is reduced. The behavior of the screw or the supplied resin can be visually confirmed by an observer through the glass body.
【００１２】[0012]
【実施例】以下、本考案の一実施例を図１ないし図５に
基づいて説明する。なお、本実施例において図６に示す
従来例と同一部分には同一符号を付してその詳細な説明
を省略する。加熱筒４の先端には射出ノズル（図示せ
ず）が設けられ、加熱筒４の基部にはホッパ（図示せ
ず）が設けられている。加熱筒４は金型（図示せず）に
対して進退自在とされ、また加熱筒４の内部には射出ス
クリュ（以下単にスクリュという）３が、軸方向に移動
自在に、かつ周方向に回転自在に挿入されているが、こ
の基本構造は従来の射出成形機と同じである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the present embodiment, the same parts as those in the conventional example shown in FIG. 6 are designated by the same reference numerals, and detailed description thereof will be omitted. An injection nozzle (not shown) is provided at the tip of the heating cylinder 4, and a hopper (not shown) is provided at the base of the heating cylinder 4. The heating cylinder 4 is movable back and forth with respect to a mold (not shown), and an injection screw (hereinafter simply referred to as screw) 3 is axially movable in the heating cylinder 4 and rotated in the circumferential direction. Although it is freely inserted, the basic structure is the same as the conventional injection molding machine.
【００１３】図１ないし図５において、加熱筒４の周壁
には、加熱筒４の前端（ノズル側）から基端（ホッパ
側）にかけて、断面形状が半円より大きい欠円形の丸溝
４１がスクリュ穴４ａに連通させられて形成されてい
る。丸溝４１の断面は、図４に示すように、加熱筒４の
断面のスクリュ穴４ａの内周と丸溝４１の断面の円弧と
の交点ｍ，ｍと、丸溝４１の断面の円弧の中心Ｏ（スク
リュ穴４ａの内周面から加熱筒４の外周側へ若干離間し
た位置にある）とを結ぶことにより示される丸溝４１の
断面の円弧の中心角αが１８０°より大きくされた欠円
形とされている。従って、加熱筒４には、スクリュ穴４
ａと丸溝４１とにより、いわゆる断面だるま形の穴が形
成されている。1 to 5, a circular groove 41 having a cross section larger than a semicircle is formed on the peripheral wall of the heating cylinder 4 from the front end (nozzle side) to the base end (hopper side) of the heating cylinder 4. It is formed so as to communicate with the screw hole 4a. As shown in FIG. 4, the cross section of the round groove 41 has the intersection points m, m between the inner circumference of the screw hole 4 a of the cross section of the heating cylinder 4 and the arc of the cross section of the round groove 41, and the arc of the cross section of the round groove 41. The central angle α of the arc of the cross section of the circular groove 41 shown by connecting with the center O (at a position slightly separated from the inner peripheral surface of the screw hole 4a to the outer peripheral side of the heating cylinder 4) is made larger than 180 °. It is supposed to have an oval shape. Therefore, the heating cylinder 4 has a screw hole 4
A hole having a so-called Daruma-shaped cross section is formed by a and the circular groove 41.
【００１４】前記丸溝４１には、複数のガラス体４２と
複数のスペーサ４３とが嵌入されている。ガラス体４２
の断面形状とスペーサ４３の断面形状とは同一とされて
いる。これらガラス体４２とスペーサ４３の断面形状
は、スクリュ穴４ａ側がこのスクリュ穴４ａの内周の円
弧面と合致し、加熱筒４の周壁側が丸溝４１の円弧面に
合致する形状とされている。ガラス体４２は棒状のもの
で、複数のガラス体４２は、互いの間に、ガラスとは異
質の材質（例えば金属）からなるスペーサ４３をガラス
体４２により押し付けて介在させた状態で嵌入されてい
る。ガラス体４２及びスペーサ４３は、それぞれのスク
リュ穴４ａ側の円弧面４２ａ，４３ａがスクリュ穴４ａ
の内周の円弧面と合致するように丸溝４１に嵌入されて
いる。A plurality of glass bodies 42 and a plurality of spacers 43 are fitted in the round groove 41. Glass body 42
The cross-sectional shape of the spacer and the cross-sectional shape of the spacer 43 are the same. The cross-sectional shapes of the glass body 42 and the spacer 43 are such that the screw hole 4a side matches the circular arc surface of the inner circumference of the screw hole 4a, and the peripheral wall side of the heating cylinder 4 matches the circular arc surface of the round groove 41. . The glass body 42 is rod-shaped, and the plurality of glass bodies 42 are inserted in a state in which a spacer 43 made of a material (for example, a metal) different from glass is pressed between the glass bodies 42 and interposed therebetween. There is. In the glass body 42 and the spacer 43, the circular arc surfaces 42a and 43a on the screw hole 4a side are screw holes 4a.
It is fitted in the circular groove 41 so as to match the circular arc surface of the inner periphery of the.
【００１５】また、加熱筒４の周壁には、ガラス体４２
に対向して、加熱筒４の周壁の外面から丸溝４１に達し
加熱筒４の外部と丸溝４１内とを連通する複数の長穴状
の観察窓４４が、加熱筒４の軸線方向に沿って間隔をお
いて形成されている。また、ガラス体４２において、丸
溝４１に嵌入されたガラス体４２のスクリュ穴４ａ側の
円弧面４２ａが加熱筒４の内周面と合致した状態で、観
察窓４４と対向する面部分が、スクリュ穴４ａの中心と
丸溝４１の円弧４１ａの中心とを通るスクリュ穴４ａの
直径線と直交する平面４２ｂに形成されている。丸溝４
１に嵌入されたガラス体４２は、スクリュ穴４ａ側の円
弧面４２ａが加熱筒４の内周の円弧面と合致した状態
で、加熱筒４の周壁に螺合された複数のボルト４５が締
め込まれることにより、このボルト４５に平面４２ｂが
押圧され、加熱筒４に回り止めされて固定されている。A glass body 42 is provided on the peripheral wall of the heating cylinder 4.
Facing each other, a plurality of oblong hole-shaped observation windows 44 reaching the circular groove 41 from the outer surface of the peripheral wall of the heating cylinder 4 and communicating the outside of the heating cylinder 4 with the inside of the circular groove 41 are arranged in the axial direction of the heating cylinder 4. It is formed along the distance. Further, in the glass body 42, the surface portion facing the observation window 44 in a state in which the circular arc surface 42a of the glass body 42 fitted into the round groove 41 on the screw hole 4a side matches the inner peripheral surface of the heating cylinder 4, It is formed on a plane 42b orthogonal to the diameter line of the screw hole 4a passing through the center of the screw hole 4a and the center of the circular arc 41a of the round groove 41. Round groove 4
In the glass body 42 fitted in 1, the plurality of bolts 45 screwed into the peripheral wall of the heating cylinder 4 are tightened in a state where the circular arc surface 42a on the screw hole 4a side matches the circular arc surface of the inner circumference of the heating cylinder 4. By being inserted, the flat surface 42b is pressed against the bolt 45 and is fixed to the heating cylinder 4 by being prevented from rotating.
【００１６】しかして、射出成形機の作動時において、
スクリュ３のフライト（供給樹脂材料送給用ねじ）間に
樹脂材料が供給され、スクリュ３が回転あるい軸線方向
に移動した場合、加熱筒４内のスクリュ３あるいは供給
樹脂の挙動がガラス体４２を通して観察者の目視により
確認される。本実施例によれば、スクリュ３の作動時
に、ガラス体４２及びスペーサ４３は、ガラス体４２が
スペーサ４３をその長さ方向に押し付けかつ円弧面４２
ａ，４３ａがスクリュ穴４ａの内周面と合致した状態で
ボルト４５により加熱筒４に対し回り止めされて加熱筒
４に固定されているので、がたつくことも、スクリュ３
に当ることもない。またガラス体４２及びスペーサ４３
は丸溝４１の内周面に押し付けられているので、加熱筒
４内は、ガラス体４２，スペーサ４３により密封される
ため、加熱筒４内の供給樹脂が外部に漏れることはな
い。また、ガラス体４２及びスペーサ４３とスクリュ３
との間には、丸溝４１に嵌入されたガラス体４２，スペ
ーサ４３のそれぞれのスクリュ穴４ａ側の円弧面４２
ａ，４３ａが加熱筒４の内周面と合致しているので、従
来例の前記第３の射出成形機における切欠きに樹脂が入
るようなことはなく、また、ガラス体４２の観察窓４４
側面が平面に形成されているので、ガラス体４２のレン
ズ作用が少なくなり、ガラス体４２を通しての加熱筒４
内のスクリュ３あるいは供給樹脂の像の歪が少なくな
り、従って加熱筒４内のスクリュ２３あるいは供給樹脂
の挙動を観察者により明視することが可能となる。ま
た、前記丸溝４１は断面円形の穴の一部の断面形状の穴
であるので、この丸溝４１をドリル，リーマ，ホーニン
グにより加工することが可能であるため、丸溝４１の加
工性がよい。なお、前記ガラス体４２は一連の長いもの
とされ、ガラス体４２間のスペーサ４３はなくされた構
成のものとしてもよい。Therefore, during operation of the injection molding machine,
When the resin material is supplied between the flights of the screw 3 (the screw for supplying the supplied resin material) and the screw 3 rotates or moves in the axial direction, the behavior of the screw 3 in the heating cylinder 4 or the supplied resin is the glass body 42. Through the eyes of an observer. According to the present embodiment, when the screw 3 is operated, the glass body 42 and the spacer 43 are such that the glass body 42 presses the spacer 43 in the longitudinal direction and the arc surface 42.
Since a and 43a are fixed to the heating cylinder 4 by being prevented from rotating with respect to the heating cylinder 4 by the bolt 45 in a state where they are aligned with the inner peripheral surface of the screw hole 4a, the rattling of the screw 3
There is no chance of hitting. Further, the glass body 42 and the spacer 43
Since it is pressed against the inner peripheral surface of the round groove 41, the inside of the heating cylinder 4 is sealed by the glass body 42 and the spacer 43, so that the supplied resin in the heating cylinder 4 does not leak to the outside. Further, the glass body 42, the spacer 43, and the screw 3
Between the glass body 42 fitted in the circular groove 41 and the circular arc surface 42 of the spacer 43 on the screw hole 4a side.
Since a and 43a are matched with the inner peripheral surface of the heating cylinder 4, the resin does not enter the notch in the third conventional injection molding machine of the conventional example, and the observation window 44 of the glass body 42 is provided.
Since the side surface is formed into a flat surface, the lens action of the glass body 42 is reduced, and the heating cylinder 4 through the glass body 42 is reduced.
The distortion of the image of the screw 3 inside or the supplied resin is reduced, so that the behavior of the screw 23 inside the heating cylinder 4 or the supplied resin can be clearly observed by the observer. Further, since the round groove 41 is a hole having a partial cross-sectional shape of a hole having a circular cross section, the round groove 41 can be processed by a drill, a reamer, and a honing machine. Good. The glass body 42 may be a series of long ones, and the spacer 43 between the glass bodies 42 may be eliminated.
【００１７】[0017]
【考案の効果】以上説明したように、本考案によれば、
加熱筒内の供給樹脂の可塑化、射出、排出等を行うスク
リュの作動時において、加熱筒の内周面とガラス体のス
クリュ穴側面とが合致した状態で加熱筒にガラス体が固
定されているので、このガラス体ががたつくこともスク
リュに当ることもない。また前記スクリュの作動時に、
加熱筒内は丸溝の内周面に押し付けられたガラス体によ
り密封されるため、加熱筒内の供給樹脂が外部に漏れる
ことはない。またガラス体のスクリュ穴側面が加熱筒の
スクリュ穴の内周面と合致しているので、従来例のよう
にガラス体のスクリュ穴側の凹所に樹脂が入り込むよう
なことはなくなり、加熱筒内のスクリュあるいは供給樹
脂の挙動をガラス体を通して観察者の目視により容易に
確認することができる。また、丸溝は断面円形の穴の一
部であるので、その加工性がよい。As described above, according to the present invention,
During operation of the screw that plasticizes, injects, or discharges the resin supplied in the heating cylinder, the glass body is fixed to the heating cylinder with the inner peripheral surface of the heating cylinder and the screw hole side surface of the glass body aligned. The glass body does not rattle or hit the screw. Also, when the screw is operated,
Since the inside of the heating cylinder is sealed by the glass body pressed against the inner peripheral surface of the circular groove, the supply resin inside the heating cylinder does not leak to the outside. Also, since the side surface of the screw hole of the glass body matches the inner peripheral surface of the screw hole of the heating cylinder, the resin does not enter into the recess on the screw hole side of the glass body as in the conventional example, and the heating cylinder The behavior of the screw inside or the supplied resin can be easily confirmed by an observer's eyes through the glass body. Further, since the circular groove is a part of the hole having a circular cross section, its workability is good.
【図１】本考案の一実施例を示す要部の縦断面図であ
る。FIG. 1 is a vertical cross-sectional view of an essential part showing an embodiment of the present invention.
【図２】図１のＡ矢視図である。FIG. 2 is a view on arrow A in FIG.
【図３】図１のＢ−Ｂ線に沿う断面図である。3 is a cross-sectional view taken along the line BB of FIG.
【図４】本考案の加熱筒の要部の拡大断面図である。FIG. 4 is an enlarged sectional view of a main part of the heating cylinder of the present invention.
【図５】図３の要部の拡大断面図である。5 is an enlarged cross-sectional view of a main part of FIG.
【図６】従来の射出成形機の第一例を示す概略正面図で
ある。FIG. 6 is a schematic front view showing a first example of a conventional injection molding machine.
【図７】従来の射出成形機の第一例を示す要部の正面図
である。FIG. 7 is a front view of a main part showing a first example of a conventional injection molding machine.
【図８】従来の射出成形機の第一例を示す要部の断面図
である。FIG. 8 is a sectional view of a main part showing a first example of a conventional injection molding machine.
【図９】図８のＣ−Ｃ線に沿う断面図である。9 is a sectional view taken along the line CC of FIG.
【図１０】従来の射出成形機の第二例を示す要部の正面
図である。FIG. 10 is a front view of a main part showing a second example of a conventional injection molding machine.
【図１１】従来の射出成形機の第二例を示す要部の断面
図である。FIG. 11 is a sectional view of an essential part showing a second example of a conventional injection molding machine.
【図１２】図１１のＤ−Ｄ線に沿う断面図である。12 is a cross-sectional view taken along the line DD of FIG.
【図１３】従来の射出成形機の第三例を示す要部の正面
図である。FIG. 13 is a front view of a main part showing a third example of a conventional injection molding machine.
【図１４】従来の射出成形機の第三例を示す要部の断面
図である。FIG. 14 is a sectional view of an essential part showing a third example of a conventional injection molding machine.
【図１５】図１４のＥ−Ｅ線に沿う断面図である。15 is a cross-sectional view taken along the line EE of FIG.
２ ノズル ３ スクリュ ４ 加熱筒 ４ａ スクリュ穴 ４１ 丸溝 ４１ａ 円弧 ４２ ガラス体 ４２ａ 円弧面 ４２ｂ 平面 ４４ 観察窓 ４５ ボルト（ねじ） 2 Nozzle 3 Screw 4 Heating Cylinder 4a Screw Hole 41 Round Groove 41a Arc 42 Glass Body 42a Arc Surface 42b Plane 44 Observation Window 45 Bolt (Screw)
Claims (1)
軸線方向に沿って該加熱筒内に形成された断面円形のス
クリュ穴に、移動用駆動装置で軸方向に動かされ回転用
駆動装置で周方向に回転させられる射出スクリュが挿入
された射出成形機において、 断面形状が半円より大きい欠円形の丸溝が、前記スクリ
ュ穴に連通させられて前記加熱筒の周壁に該加熱筒の軸
線方向に沿って形成され、 前記丸溝には、前記スクリュ穴側が該スクリュ穴の内周
と合致し前記加熱筒の周壁側が前記丸溝の円弧面に合致
する断面形状を有する棒状のガラス体が、前記スクリュ
穴側面が該スクリュ穴の内周面と合致するように嵌入さ
れ、 前記加熱筒の周壁の前記ガラス体に対向する箇所には、
前記スクリュ穴と丸溝の各中心を通るスクリュ穴の直径
線上に位置し前記加熱筒の外部と前記丸溝内とを連通す
る長穴状の観察窓が前記加熱筒の軸線方向に沿って形成
され、 前記ガラス体は、前記加熱筒の周壁に螺合され前記ガラ
ス体に当接された複数のねじにより前記加熱筒に締め付
け固定されたことを特徴とする可視化加熱筒を備えた射
出成形機。1. A rotation driving device which is axially moved by a moving driving device into a screw hole having a circular cross section formed in the heating cylinder provided with an injection nozzle at the tip thereof along the axial direction of the heating cylinder. In an injection molding machine in which an injection screw that is rotated in the circumferential direction is inserted, a circular groove with a circular cross section larger than a semicircle is communicated with the screw hole, and the circular wall of the heating cylinder is connected to the peripheral wall of the heating cylinder. The rod-shaped glass body is formed along the axial direction, and the round groove has a cross-sectional shape in which the screw hole side matches the inner circumference of the screw hole and the peripheral wall side of the heating cylinder matches the arc surface of the round groove. However, the screw hole side surface is fitted so as to match the inner peripheral surface of the screw hole, in the location facing the glass body of the peripheral wall of the heating cylinder,
An oblong hole-shaped observation window, which is located on the diameter line of the screw hole passing through the centers of the screw hole and the circular groove and connects the outside of the heating cylinder and the inside of the circular groove, is formed along the axial direction of the heating cylinder. An injection molding machine having a visualization heating cylinder, wherein the glass body is fastened and fixed to the heating cylinder by a plurality of screws screwed onto the peripheral wall of the heating cylinder and brought into contact with the glass body. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5180991U JPH07266Y2 (en) | 1991-07-04 | 1991-07-04 | Injection molding machine with visualization heating cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5180991U JPH07266Y2 (en) | 1991-07-04 | 1991-07-04 | Injection molding machine with visualization heating cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0518819U JPH0518819U (en) | 1993-03-09 |
| JPH07266Y2 true JPH07266Y2 (en) | 1995-01-11 |
Family
ID=12897246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5180991U Expired - Lifetime JPH07266Y2 (en) | 1991-07-04 | 1991-07-04 | Injection molding machine with visualization heating cylinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07266Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6030366B2 (en) * | 2012-07-24 | 2016-11-24 | 株式会社パイロットコーポレーション | Liquid ejection device |
| JP6543985B2 (en) * | 2015-03-25 | 2019-07-17 | 横浜ゴム株式会社 | Internal observation method of kneading machine |
-
1991
- 1991-07-04 JP JP5180991U patent/JPH07266Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0518819U (en) | 1993-03-09 |
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