JPS598549B2 - injection device - Google Patents
injection deviceInfo
- Publication number
- JPS598549B2 JPS598549B2 JP55151859A JP15185980A JPS598549B2 JP S598549 B2 JPS598549 B2 JP S598549B2 JP 55151859 A JP55151859 A JP 55151859A JP 15185980 A JP15185980 A JP 15185980A JP S598549 B2 JPS598549 B2 JP S598549B2
- Authority
- JP
- Japan
- Prior art keywords
- heating cylinder
- cylinder
- fixing bracket
- support box
- heating
- 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
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/176—Exchanging the injection unit or parts thereof
-
- 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
- B29C48/256—Exchangeable extruder parts
-
- 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
Description
【発明の詳細な説明】
射出成形機において樹脂を変えて成形を行うことは頻繁
に行われる。DETAILED DESCRIPTION OF THE INVENTION Molding is frequently performed using different resins in injection molding machines.
この場合加熱筒内に残っている前の樹脂を完全に除去し
なければ良い成形品は得られない。In this case, a good molded product cannot be obtained unless the previous resin remaining in the heating cylinder is completely removed.
特に色換えの場合は作業の確実性が要求される。Particularly when changing colors, reliability is required.
残留樹脂を除去するため、加熱筒内のスクリュを回転往
復動させてスクリュ洗滌を行っている。In order to remove residual resin, the screw inside the heating cylinder is rotated and reciprocated to perform screw cleaning.
このスクリュ洗滌は前の樹脂を押し出すために樹脂を消
費し又作業時間も長く費す。This screw cleaning consumes resin to extrude the previous resin and also takes a long time.
射出成形機において樹脂換え時間を短くすることは射出
成形機を有効に利用することができる。By shortening the resin change time in an injection molding machine, the injection molding machine can be used effectively.
本発明は射出成形機の樹脂換えを射出装置の加熱筒を交
換して行う装置に関するものである。The present invention relates to an apparatus for changing the resin of an injection molding machine by replacing the heating cylinder of the injection device.
次に図面に従って本発明を説明する。Next, the present invention will be explained according to the drawings.
１は機台であり、２は該機台１に固定した型締装置の固
定盤である。1 is a machine base, and 2 is a fixed platen of a mold clamping device fixed to the machine base 1.
３は２連の射出シリンダであり、４は機台１に固定した
射出台であり５は射出台４の上に固定した射出シリンダ
ブラケットである。3 is a double injection cylinder, 4 is an injection table fixed to the machine base 1, and 5 is an injection cylinder bracket fixed on the injection table 4.
６は射出台４の上に固定した加熱筒支持ボックスである
。6 is a heating cylinder support box fixed on the injection table 4.
７は射出シリンダブラケット５と加熱筒支持ボックスの
間に緊張した４本のステーである。Reference numeral 7 denotes four stays tensioned between the injection cylinder bracket 5 and the heating cylinder support box.
８は加圧盤である。8 is a pressure plate.
９は射出シリンダ３に挿嵌したピストンであり１０はピ
ストン９に固定したピストンロンドである。9 is a piston inserted into the injection cylinder 3, and 10 is a piston rod fixed to the piston 9.
ピストンロツド１０の先端はカロ圧盤８Ｋ固定している
。The tip of the piston rod 10 is fixed to a Calo pressure plate 8K.
１１は油圧モータであり加圧盤８に固定している。Reference numeral 11 denotes a hydraulic motor, which is fixed to the pressure plate 8.
１２は雌スプラインであり油圧モータ１１の軸に嵌合さ
せている。A female spline 12 is fitted onto the shaft of the hydraulic motor 11.
１３は加熱筒であり、１４は加熱筒固定ブラケットであ
り、該加熱筒固定ブラケット１４は加熱筒支持ボックス
６内に加熱筒１３の軸と直角方向にガイドバ−１５に沿
って往復動可能である。13 is a heating cylinder; 14 is a heating cylinder fixing bracket; the heating cylinder fixing bracket 14 is capable of reciprocating along a guide bar 15 in a direction perpendicular to the axis of the heating cylinder 13 within the heating cylinder support box 6; .
１６は加熱筒１３に螺合したリングであり、該リング１
６を螺合した状態にて加熱筒１３の先端小径部１３ａを
加熱筒固定ブラケット１４に嵌合させボルト１７にて該
リング１６を貫通して加熱筒固定ブラケット１４に加熱
筒１３を固定させる。16 is a ring screwed onto the heating cylinder 13;
6 is screwed together, the small diameter end portion 13a of the heating cylinder 13 is fitted into the heating cylinder fixing bracket 14, and the bolt 17 passes through the ring 16 to fix the heating cylinder 13 to the heating cylinder fixing bracket 14.
１８は加熱筒１３に挿嵌したスクリュの後端に設けた雄
スプラインである。18 is a male spline provided at the rear end of the screw inserted into the heating cylinder 13.
１９はスクリュの軸方向の移動を阻止するスクリュ保持
用油圧シリンダであり１９ｂは該油圧シリンダ１９のピ
ストンロット゛部１９ａの先端に固定したストソパであ
る。Reference numeral 19 is a screw holding hydraulic cylinder that prevents the screw from moving in the axial direction, and reference numeral 19b is a stopper fixed to the tip of the piston rod portion 19a of the hydraulic cylinder 19.
２０は加熱筒格納装置であり、２１は該加熱筒格納装置
２０の支柱であり４本立設している。Reference numeral 20 denotes a heating cylinder storage device, and numeral 21 denotes four pillars of the heating cylinder storage device 20.
２２は支柱２１に沿って昇降するスライドバーであり、
２３は加熱筒載置棚であり該スライドパー２２に加熱筒
１３を固定した加熱筒固定ブラケット１４を載置できる
よう一定間隔に加熱筒載置棚２３の＝端を固定している
。22 is a slide bar that moves up and down along the pillar 21;
Reference numeral 23 denotes a heating cylinder mounting shelf, and the ends of the heating cylinder mounting shelves 23 are fixed at regular intervals so that the heating cylinder fixing brackets 14 on which the heating cylinders 13 are fixed can be placed on the slide pars 22.
２４は一対のスライドパー２２と上端に固定した固定片
である。Reference numeral 24 denotes a pair of slide pars 22 and a fixed piece fixed to the upper end.
２５は底部を床面に固定した一対の加熱筒載置棚用油圧
シリンダであり、該加熱筒載置棚昇降用油圧シリンダ２
５に挿嵌したピストンのピストンロツド２５ａの先端は
前記スライドパーの上端に固定した固定片２４に固定し
ている。Reference numeral 25 denotes a pair of hydraulic cylinders for heating cylinder mounting shelves whose bottoms are fixed to the floor surface, and the hydraulic cylinders 2 for raising and lowering the heating cylinder mounting shelf.
The tip of the piston rod 25a of the piston inserted into the slider 5 is fixed to a fixing piece 24 fixed to the upper end of the slider.
２６は加熱筒固定ブラケット１４を移動させるための加
熱筒移動用油圧シリンダであり床而に立設したブラケッ
ト２１によって水平に固定寄れている。Reference numeral 26 denotes a hydraulic cylinder for moving the heating cylinder fixing bracket 14, which is fixed horizontally by a bracket 21 erected on the floor.
２８は加熱筒固定フラケット１４に固定した連結ブラケ
ットであり、常時スプリング２９０弾力によって上限に
押し上げられている，３０は加熱筒固定ブラケット１４
が加熱筒支持ボックス６の前進限まで前進したとき連結
ブラケット２８をスプリング２９の力に抗して押し下げ
るための連結ブラケット昇降用油圧シリンダであり，加
熱筒支持ボックス６上に固定されている。28 is a connecting bracket fixed to the heating cylinder fixing bracket 14, and is constantly pushed up to the upper limit by the elasticity of a spring 290; 30 is a connecting bracket fixed to the heating cylinder fixing bracket 14;
This is a hydraulic cylinder for lifting and lowering the connecting bracket 28 for pushing down the connecting bracket 28 against the force of the spring 29 when the heating cylinder support box 6 advances to the forward limit of the heating cylinder support box 6, and is fixed on the heating cylinder support box 6.
３１は連結ブラケット移動用油圧シリンダ３０に挿嵌し
たピストンロンドであり、ピストンロソド３１の下降に
よって連結ブラケット２８を下降させる，３２は位置決
め用油圧シリンダであり、ブラケット３３によって加熱
筒支持ボックス６に固定されている。31 is a piston rod inserted into the hydraulic cylinder 30 for moving the connecting bracket, which lowers the connecting bracket 28 by lowering the piston rod 31; 32 is a positioning hydraulic cylinder, which is fixed to the heating cylinder support box 6 by a bracket 33; ing.
３３は位置決め用油圧シリンダ３２のピストンロンドで
あり、加熱筒固定ブラケット１４力功ｕ熱筒支持ボック
ス６の一定位置に停止したとき前記ピストンロツド３３
を下降させ加熱筒固定ブラケット１４に設けた孔に貫通
させ位置を固定する。33 is a piston rod of the positioning hydraulic cylinder 32, and when the heating cylinder fixing bracket 14 is stopped at a certain position of the heating cylinder support box 6, the piston rod 33
is lowered and passed through the hole provided in the heating cylinder fixing bracket 14, and the position is fixed.
３４は第］ホッパであり３５は第１ホツパ３４の下に設
けた第１原科供給筒であり３６は第１原料供給筒３５内
にて回転する第１フイードスクリュである。34 is a first hopper, 35 is a first raw material supply cylinder provided under the first hopper 34, and 36 is a first feed screw rotating within the first raw material supply cylinder 35.
３１は第２ホッパであり、３８は第２ホツパ３１の下に
設けた第２原料供給筒であり、３９は第２原料供給筒３
８内にて回転する第２フィードスクリュである。31 is a second hopper, 38 is a second raw material supply cylinder provided below the second hopper 31, and 39 is a second raw material supply cylinder 3.
8 is a second feed screw that rotates within the feed screw.
４０は第１フィードスクリュ３６を回転させる第１可変
速度モータであり４１は第２フイードスクリュを回転さ
せる第２可変速度モータである。40 is a first variable speed motor that rotates the first feed screw 36, and 41 is a second variable speed motor that rotates the second feed screw.
４２は加熱筒の原料供給孔であり４３は加熱筒支持ボッ
クス６と加熱筒固定ブラケット１４を貫通し加熱筒の原
料供給孔４２に連通した孔である。42 is a raw material supply hole of the heating cylinder, and 43 is a hole that passes through the heating cylinder support box 6 and the heating cylinder fixing bracket 14 and communicates with the raw material supply hole 42 of the heating cylinder.
次に作動について説明する。Next, the operation will be explained.
或る原科を用いた射出成形が完了し次の原料にて射出成
形を行うには、スクリュ保持用油圧シリンダ１９のピス
トンロンド１９ａを前進させストツバ１９ｂをスクリュ
の雄スプライン１８に隣合せた溝部に挿入し、スクリュ
の移動を阻止した後射出シリンダの３ａ室に油を吐出し
加圧盤８を図において左方に後退させスクリュの雄スプ
ラインと油圧モータ１１に連結した雌スプライン１２と
の保合を解く。When injection molding using a certain raw material is completed and injection molding is to be performed using the next raw material, the piston rond 19a of the hydraulic cylinder 19 for holding the screw is advanced and the stop collar 19b is inserted into the groove adjacent to the male spline 18 of the screw. After blocking the movement of the screw, oil is discharged into the chamber 3a of the injection cylinder, and the pressure plate 8 is moved back to the left in the figure to engage the male spline of the screw with the female spline 12 connected to the hydraulic motor 11. Solve.
この後スクリュ保持用油圧シリンダ１９のピストンロツ
ド１９を後退させておく。After this, the piston rod 19 of the screw holding hydraulic cylinder 19 is moved back.
次に位置決め用油圧シリンダ３２のピストンロツド３３
を上昇させ加熱筒支持ボックス６と加熱筒固定ブラケッ
ト１４の係合を解く。Next, the piston rod 33 of the positioning hydraulic cylinder 32
to disengage the heating cylinder support box 6 and the heating cylinder fixing bracket 14.
連結プラクソト移動用油圧シリンダ３０のピストンロソ
ド３１を下降させ、連結フラケット２８をスプリング２
９に抗して押し下げ、加熱筒移動用油圧シリンダ２６の
ピストンロツド２６ａを前進させ、先端の保合片２６ｂ
を連結ブラケット２８の上方に突き出し連結ブラケット
昇降用油圧シリンダ３０のピストンロツド３１を上昇さ
せると連結ブラケット２８の四部に前記係合片２６ｂが
係合する。The piston rod 31 of the hydraulic cylinder 30 for moving the connecting plate is lowered, and the connecting racket 28 is moved by the spring 2.
9, move the piston rod 26a of the hydraulic cylinder 26 for moving the heating cylinder forward, and press the retaining piece 26b at the tip.
When the piston rod 31 of the hydraulic cylinder 30 for raising and lowering the connecting bracket is raised by protruding it above the connecting bracket 28, the engaging pieces 26b engage with the four parts of the connecting bracket 28.
この状態にて加熱筒移動用油圧シリンダ２６のピストン
ロンド２６Ｋを後退させる・。In this state, the piston rod 26K of the heating cylinder moving hydraulic cylinder 26 is moved back.
この時加熱筒載置棚２３の棚上面位置２３ａを加熱筒支
持ボックス６の下部摺動而６ａと合せてあるので加熱筒
固定プラケ′ット１４は加熱筒載置棚２３の上に載置さ
れる。At this time, the shelf upper surface position 23a of the heating cylinder mounting shelf 23 is aligned with the lower sliding part 6a of the heating cylinder support box 6, so the heating cylinder fixing bracket 14 is placed on the heating cylinder mounting shelf 23. be done.
次に加熱筒載置棚昇降用油圧シリンダ２５のピストンロ
ツド２５ａを下降させ、他の原科用の加熱筒が載置して
いる上段の加熱筒載置棚２３の棚上面位置２３ａを卯熱
筒支持ボックス６０下部摺動向に合せる。Next, the piston rod 25a of the hydraulic cylinder 25 for raising and lowering the heating cylinder mounting shelf is lowered, and the shelf upper surface position 23a of the upper heating cylinder mounting shelf 23, on which the heating cylinders for other raw materials are placed, is moved from the heating cylinder to the heating cylinder. Adjust to the sliding movement of the lower part of the support box 60.
加熱筒移動用油圧シリンダ２６のピストンロツド２６ａ
の先端の係合片２６ｂは加熱筒載置棚２３の下降によっ
て加熱筒固定ブラケットの連結ブラケット２８の凹部に
係合する。Piston rod 26a of the hydraulic cylinder 26 for moving the heating cylinder
The engaging piece 26b at the tip engages with the recess of the connecting bracket 28 of the heating cylinder fixing bracket when the heating cylinder mounting shelf 23 is lowered.
次に加熱筒移動用油圧シリンダ２６のピストンロソド２
６ａを前進させ加熱筒固定ブラケット１４を加熱筒支持
ボックスの予め定めた位置に載置する。Next, the piston rod 2 of the hydraulic cylinder 26 for moving the heating cylinder
6a is advanced to place the heating cylinder fixing bracket 14 at a predetermined position on the heating cylinder support box.
次に位置決め用油圧シリスダ３２のピストンロツド３３
を下降させ加熱筒固定ブラケット１４を加熱筒支持ボッ
クスに固定させる。Next, the piston rod 33 of the positioning hydraulic cylinder 32
is lowered to fix the heating cylinder fixing bracket 14 to the heating cylinder support box.
連結ブラケット昇降用油圧シリンダ３０のピストンロツ
ド３１を下降させ、加熱筒移動用油圧シリンダ２６のピ
ストンロツド２６ａの先端の保合片２６ｂを連結ブラケ
ット２８との係合を解ぎ移動用油圧シリンダ２６のピス
トンロツド２６ａ゛を後退させる。The piston rod 31 of the hydraulic cylinder 30 for raising and lowering the connecting bracket is lowered, and the retaining piece 26b at the tip of the piston rod 26a of the hydraulic cylinder 26 for moving the heating cylinder is disengaged from the connecting bracket 28, and the piston rod 26a of the hydraulic cylinder 26 for moving is released.゛ to retreat.
次に射出シリンダの射出側シリンダ室３ｂに油を吐出さ
せ加圧盤を前進させ油圧モータの雌スプライン１２をス
クリュの雄スプライン１８に嵌合させる。Next, oil is discharged into the injection side cylinder chamber 3b of the injection cylinder, the pressure plate is moved forward, and the female spline 12 of the hydraulic motor is fitted into the male spline 18 of the screw.
油圧モータ１１を駆動しスクリュを回転させ第１可変速
度モータ４０を回転させ第１ホッパの原料を加熱孔の原
料供給孔４２に落下させろ。Drive the hydraulic motor 11 to rotate the screw and rotate the first variable speed motor 40 to drop the raw material in the first hopper into the raw material supply hole 42 of the heating hole.
予め定めた量の樹脂を可塑化した後、射出シリンダ３の
シリンタ室３ｂに油を供給し加圧盤８を前進させろこと
によってスクリュを前進させ溶融原料をノズル４４から
射出する。After plasticizing a predetermined amount of resin, oil is supplied to the cylinder chamber 3b of the injection cylinder 3 and the pressure plate 8 is moved forward, thereby moving the screw forward and injecting the molten raw material from the nozzle 44.
第１ホツパ３４にてある樹脂の成形を完了した後、次の
樹脂を成形するには第２ホツパ３７があるので切換が容
易である。After the first hopper 34 completes molding of a certain resin, the second hopper 37 is used to mold the next resin, so switching is easy.
本発明において加熱筒載置棚２３に載置されている加熱
筒１３は使用される前に予め加熱しておくことができる
ので、加熱筒１３を取り換えた後作業を迅速にすること
ができる。In the present invention, the heating cylinder 13 placed on the heating cylinder mounting shelf 23 can be heated in advance before being used, so that the work after replacing the heating cylinder 13 can be done quickly.
本発明は従来射出成形において樹脂換えの時間が非常に
長く必要としたのを加熱筒を自動に交換できるようにし
、成形の段取時間を極めて短くしたことは本発明の効果
である。An advantage of the present invention is that the heating cylinder can be automatically replaced, whereas conventional injection molding requires a very long time to change the resin, and the molding setup time is extremely shortened.
第１図は本発明の一実施例を示す装置の正面図であり第
２図は第１図のＩＩ−ＩＩ矢視図であり第３図は第２図
の■−■矢視図である。
１：機台、２：固定盤、３：射出シリンダ、６：７ＪＯ
熱筒支持ボックス、８：加圧盤、１１：油圧モータ、１
３：加熱筒、１．４：加熱筒固定ブラケット、２０：加
熱筒格納装置、２３：加熱筒載置棚、２６：加熱筒移動
用油圧シリンダ。FIG. 1 is a front view of a device showing an embodiment of the present invention, FIG. 2 is a view taken along the arrow II-II in FIG. 1, and FIG. 3 is a view taken along the arrows ■-■ in FIG. . 1: Machine base, 2: Fixed plate, 3: Injection cylinder, 6: 7JO
Heat cylinder support box, 8: Pressure plate, 11: Hydraulic motor, 1
3: heating cylinder, 1.4: heating cylinder fixing bracket, 20: heating cylinder storage device, 23: heating cylinder mounting shelf, 26: hydraulic cylinder for heating cylinder movement.
Claims (1)
ボックスにスクリュを挿嵌した加熱筒の後部を固定した
加熱筒固定ブラケットを加熱筒の軸方向と直角方向に挿
入又は離脱できるようにし、該加熱筒支持ボックスに該
加熱筒固定ブラケットを予め定めた位置に固定できる位
置決め用油圧シリンダを設け、該加熱筒支持ボックスに
該加熱筒固定ブラケットを挿入又は離脱できる位置に該
加熱筒固定ブラケットを昇降可能な多段の加熱筒載置棚
を備えた加熱筒格納装置を設け、該加熱筒載置棚上の該
加熱筒固定ブラケットを該加熱筒支持ボックスに挿入さ
せる油圧シリンダを該加熱筒格納装置に固定し、該油圧
シリンダのピストンロンドの先端に該力Ｕ熱筒固定ブラ
ケットに設けた連結ブラケットに保合離脱する保合片を
設け、一方該加熱筒固定ブラケットを該加熱筒支持ボッ
クス内に挿入した後機台に固定した射出シリンダと共動
する油圧モータの回転軸にスクリュ後部を保合離脱させ
るようにしたことを特長とする加熱筒交換可能な射出装
置。1. A heating cylinder support box is fixed to the machine base, and a heating cylinder fixing bracket, which fixes the rear part of the heating cylinder with a screw inserted into the heating cylinder support box, can be inserted or removed in a direction perpendicular to the axial direction of the heating cylinder. , a positioning hydraulic cylinder capable of fixing the heating cylinder fixing bracket at a predetermined position is provided in the heating cylinder support box, and the heating cylinder fixing bracket is positioned at a position where the heating cylinder fixing bracket can be inserted into or removed from the heating cylinder support box. A heating cylinder storage device is provided with a multi-stage heating cylinder mounting shelf that can be raised and lowered, and a hydraulic cylinder for inserting the heating cylinder fixing bracket on the heating cylinder mounting shelf into the heating cylinder support box is installed in the heating cylinder storage device. A retaining piece is provided at the tip of the piston rod of the hydraulic cylinder to be attached to and detached from the connecting bracket provided on the heating cylinder fixing bracket, while the heating cylinder fixing bracket is fixed to the heating cylinder support box. An injection device capable of replacing a heating cylinder, characterized in that the rear part of the screw is attached to and released from the rotating shaft of a hydraulic motor that operates together with an injection cylinder fixed to a rear machine stand inserted into the machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55151859A JPS598549B2 (en) | 1980-10-28 | 1980-10-28 | injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55151859A JPS598549B2 (en) | 1980-10-28 | 1980-10-28 | injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5774133A JPS5774133A (en) | 1982-05-10 |
| JPS598549B2 true JPS598549B2 (en) | 1984-02-25 |
Family
ID=15527803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55151859A Expired JPS598549B2 (en) | 1980-10-28 | 1980-10-28 | injection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS598549B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5989130A (en) * | 1982-11-15 | 1984-05-23 | Sumitomo Heavy Ind Ltd | Automatic exchanger for screw cylinder unit |
-
1980
- 1980-10-28 JP JP55151859A patent/JPS598549B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5774133A (en) | 1982-05-10 |
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