JPS6277917A - Screw shaft joining mechanism in injection molding machine - Google Patents

Screw shaft joining mechanism in injection molding machine

Info

Publication number
JPS6277917A
JPS6277917A JP21808885A JP21808885A JPS6277917A JP S6277917 A JPS6277917 A JP S6277917A JP 21808885 A JP21808885 A JP 21808885A JP 21808885 A JP21808885 A JP 21808885A JP S6277917 A JPS6277917 A JP S6277917A
Authority
JP
Japan
Prior art keywords
screw shaft
screw
fitting hole
saucer
truncated
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.)
Pending
Application number
JP21808885A
Other languages
Japanese (ja)
Inventor
Masato Yamamura
正人 山村
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.)
Fanuc Corp
Original Assignee
Fanuc Corp
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 Fanuc Corp filed Critical Fanuc Corp
Priority to JP21808885A priority Critical patent/JPS6277917A/en
Publication of JPS6277917A publication Critical patent/JPS6277917A/en
Pending legal-status Critical Current

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
    • B29C45/1775—Connecting parts, e.g. injection screws, ejectors, to drive means

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To provide a screw shaft joining mechanism whose attachment and detachment are easy, by a method wherein the titled mechanism is constituted of a truncated-cone-like saucer stuck to the other end of a screw shaft, a fitting hole provided on a driving member, a transmission member and a stationary member provided attachably and detachably on the driving member. CONSTITUTION:In case of sticking of a screw shaft 1 to a screw sleeve 4, two pieces of transmission members 12 are inserted between a truncated-cone-like saucer 11 and circumferential wall of a fitting hole 4b by making them tubular after the truncated-cone-like saucer 11 has been stuck to an end part of the screw shaft 1 with a setscrew 13 and inserted into the fitting hole 4b. A stationary member 5 is stuck to the screw sleeve 4 with a bolt 14 by sticking the transmission member 12 and circumferential surfaces of the truncated-cone-like saucer 11 and fitting hole one another by pressing, inserting and holding the transmission member 12 by the stationary member 5. In case of exchanging of the screw shaft 1, the screw shaft 1 can be removed easily by only removing the stationary member 5 by removing the bolt 14.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は射出成形機のスクリュー軸を駆動部材へ固着す
るための結合機構に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a coupling mechanism for fixing a screw shaft of an injection molding machine to a drive member.

従来の技術 射出成形機で使用するスクリューは成形材料の種類や、
それが粉末かペレットかによって異なりスクリューを交
換する必要がある。又、スクリューを長く使用すると摩
擦や腐蝕、により交換する必要が出てくる。そのため、
従来射出成形機のスクリュー軸は駆動軸に対して離脱可
能に固着されている。そして、これらスクリュー軸と駆
動軸の結合はスプライン結合によって行われており、こ
れらの結合がはずれていることを防止するためにリテー
ナ等による扱は止め防止が必要であった。又、構成を簡
単にするためにスクリューの回転方向に締まるネジ結合
によって固着する方法も提案された（実願昭５９−１２
０８７５号）が、スクリューを取外す場合、ネジが締ま
りすぎて取外すのに困難であった。Conventional technology The screws used in injection molding machines vary depending on the type of molding material and
The screw may need to be replaced depending on whether it is powder or pellets. Also, if the screw is used for a long time, it will need to be replaced due to friction and corrosion. Therefore,
Conventionally, the screw shaft of an injection molding machine is removably fixed to a drive shaft. These screw shafts and drive shafts are connected by spline connections, and in order to prevent these connections from coming undone, it is necessary to prevent handling using a retainer or the like. In addition, in order to simplify the structure, a method of fixing by screwing in the direction of rotation of the screw was also proposed (Utility Application No. 1986-12).
No. 0875), when removing the screw, the screw was too tight and difficult to remove.

発明が解決しようとする問題点 本発明は、従来の技術の欠点を改善し、スクリュー軸と
駆動部材の固着において、着脱が容易な。Problems to be Solved by the Invention The present invention improves the drawbacks of the prior art, and facilitates attachment and detachment of the screw shaft and the driving member.

スクリュー軸結合機構を提供することにある。The object of the present invention is to provide a screw shaft coupling mechanism.

問題点を解決するための手段 本発明は、先端にスクリューが設けられたスクリュー軸
の他端に円錐台状受皿を固着し、駆動部材には上記円錐
台状受皿が固着されたスクリュー軸の端部が嵌入する嵌
合穴を設け、設嵌合穴にスクリュー軸の端部を嵌入し、
内面が上記円錐台状受皿の円錐面に密着し、外面が上記
嵌合穴の周面に密着する伝動部材を上記嵌合穴壁面と上
記円錐台状受皿間に嵌入して、該伝動部材を上記嵌合穴
周面と円錐台状受皿の円錐面に密着させるよう押圧保持
する固定部材を上記駆動部材に着脱自在に固着すること
によって上記問題点を解決した。Means for Solving the Problems The present invention provides a truncated conical saucer fixed to the other end of a screw shaft having a screw at its tip, and an end of the screw shaft to which the truncated conical saucer is fixed to the drive member. Provide a fitting hole into which the part fits, fit the end of the screw shaft into the provided fitting hole,
A transmission member whose inner surface is in close contact with the conical surface of the truncated conical receiver and whose outer surface is in close contact with the circumferential surface of the fitting hole is fitted between the wall surface of the fitting hole and the truncated conical receiver, and the transmission member is The above problem has been solved by removably fixing to the drive member a fixing member that presses and holds the fitting hole in close contact with the circumferential surface of the fitting hole and the conical surface of the truncated conical saucer.

作　　用 計」・混練時には上記駆動部材を回転させ、上記伝動部
材を介して円錐台状受皿及びスクリュー軸を回転させる
。その時成形材料の可塑化によってスクリュー軸が後退
するが、スクリュー軸に固着された円錐台状受皿を介し
て上記駆動部材を押圧し後退させる。一方、射出時にお
いては、上記駆動部材が前進駆動させられ、円錐台状受
皿を介してスクリュー軸を前進させ射出を行う。なお、
スクリュー軸を交換づるときは、上記固定部材を駆動部
材から取外すだけでスクリュー軸を取外すことができる
。・During kneading, the drive member is rotated, and the truncated conical saucer and screw shaft are rotated via the transmission member. At this time, the screw shaft is retracted due to plasticization of the molding material, and the drive member is pressed and retracted via a truncated conical saucer fixed to the screw shaft. On the other hand, during injection, the driving member is driven forward to advance the screw shaft through the truncated conical tray and perform injection. In addition,
When replacing the screw shaft, the screw shaft can be removed simply by removing the fixing member from the drive member.

実施例 第１図は、本発明の一実施例を示す図で、１はスクリュ
ー軸で先端にスクリュー２が切っである。Embodiment FIG. 1 shows an embodiment of the present invention, in which 1 is a screw shaft with a screw 2 cut at its tip.

３はブレフシ１！−プレートで、該ブレフシ１？−プレ
ート３にスクリュースリーブ４が回転可能でかつ軸方向
（第１図中左右）移動不可能に固着されている。3 is Brefushi 1! - On the plate, the burefushi 1? - The screw sleeve 4 is fixed to the plate 3 so as to be rotatable and immovable in the axial direction (left and right in FIG. 1).

即ち、該スクリュースリーブ４は一端にフランジ部４ａ
を有し、他端部にはネジ４ｂが切ってあり、該ネジ４ｂ
と螺合するナツト１ｏと前記フランジ４ａによりスラス
トベアリング７．ラジアルベアリング８を前記ブレツシ
Ｖプレート３に挾みつけるようにして前記スクリュース
リーブ４を前記プレッシャプレート３に回転自在で軸方
向移動不可能に固着されている。そして、上記スクリュ
ースリーブ４の一端には、上記スクリュー軸１が固着さ
れ、他端にはスプライン軸６が固着されている。That is, the screw sleeve 4 has a flange portion 4a at one end.
A screw 4b is cut at the other end, and the screw 4b
The thrust bearing 7. The screw sleeve 4 is fixed to the pressure plate 3 such that the radial bearing 8 is sandwiched between the brake V plate 3 and the screw sleeve 4 is rotatably but immovable in the axial direction. The screw shaft 1 is fixed to one end of the screw sleeve 4, and the spline shaft 6 is fixed to the other end.

スクリュー軸１を回転するときは、上記スプライン軸６
を図示しない回転駆動機構により回転させ、スクリュー
スリーブ４を回転させ、該スクリュースリーブ４に固着
されたスクリュー軸１を回転させるもので、射出時にお
いては、プレッシャープレート３を図示しない駆動機構
により第１図中左方に移動させ、スクリュースリーブ４
をスラストベアリング７を介してスクリュースリーブ４
のフランジ部４ａを左方に押圧してスクリュースリーブ
４及びスクリュー軸１を、左方に移動させるものである
。このように、本実施例ではスクリュースリーブ４がス
クリュー軸１を回転させたり軸方向に接動させる駆動部
材を構成している。なお、第１図中９はリテーナである
。When rotating the screw shaft 1, the spline shaft 6
is rotated by a rotation drive mechanism (not shown), the screw sleeve 4 is rotated, and the screw shaft 1 fixed to the screw sleeve 4 is rotated. During injection, the pressure plate 3 is rotated by the drive mechanism (not shown). Move the screw sleeve 4 to the left in the figure.
The thrust bearing 7 through the screw sleeve 4
The screw sleeve 4 and the screw shaft 1 are moved to the left by pressing the flange portion 4a of the screw sleeve 4 and the screw shaft 1 to the left. In this way, in this embodiment, the screw sleeve 4 constitutes a driving member that rotates the screw shaft 1 or moves it in the axial direction. Note that 9 in FIG. 1 is a retainer.

ところで、上記スクリュー軸と駆動部材であるスクリュ
ースリーブ４との結合機構は第２図に示すＪ：うな構成
になっている。上記スクリュースリーブ４のフランジ部
４ａにはスクリュー軸１を固着するための嵌合穴４ｂが
設けられている。Incidentally, the coupling mechanism between the screw shaft and the screw sleeve 4, which is a driving member, has a J-shape configuration as shown in FIG. A fitting hole 4b for fixing the screw shaft 1 is provided in the flange portion 4a of the screw sleeve 4.

一方、スクリュー軸の一端（スクリュー２が切られてな
い側）には第３図に示すような円錐台状で、上面にスク
リュー軸１の嵌合する底付き穴１１ａを有する円錐台状
受皿１１が第２図に示すように止めねじ１３で固着され
ており、こうして円錐台状受皿１１が固着されたスクリ
ュー軸１の一端は第２図に示すように上記スクリュース
リーブ４の嵌合穴４ｂに嵌入されている。さらに、第４
図（イ）、（ロ）に示すように半円弧の管状で外径が上
記嵌合穴４ｂの径と略一致し、内径が上記円錐台状受皿
１１の円錐面と接合するようテーパー状に形成された伝
動部材１２が２個互いに接合して管を形成づるようにし
て、第２図に示づように、上記嵌合穴４ｂに挿入された
スクリュー軸の一端の円錐台状受皿１１と嵌合穴４ｂ間
に挿入されている。さらに、上記伝動部材１２の外周面
及び内周面を各々上記スクリュースリーブ４の嵌合穴４
ｂの周面及び上記円錐台状受皿１１の円錐面に密着させ
るため、第５図（イ）、（ロ）に示すような固定部材５
が上記スクリュースリーブ４に２個円状にボルト１４で
固着され、伝動部材１２を押圧し、嵌合穴４ｂの周面１
円錐台状受皿１１の周面に密着させている。なお、上記
円錐台状受皿１１の円錐面、嵌合穴４ｂの周面及び伝動
部材１２の内、外周面はみがき上げられており、これら
が密着したときの摩擦抵抗は大きくなるように仕上げら
れている。また、第２図において１３）ま座金である。On the other hand, at one end of the screw shaft (the side where the screw 2 is not cut), there is a truncated cone-shaped saucer 11 as shown in FIG. is fixed with a set screw 13 as shown in FIG. 2, and one end of the screw shaft 1 to which the truncated conical saucer 11 is fixed is inserted into the fitting hole 4b of the screw sleeve 4 as shown in FIG. It is inserted. Furthermore, the fourth
As shown in FIGS. (a) and (b), it has a semicircular tubular shape with an outer diameter that approximately matches the diameter of the fitting hole 4b, and an inner diameter that is tapered so as to join with the conical surface of the truncated conical saucer 11. Two of the formed transmission members 12 are joined to each other to form a tube, and as shown in FIG. It is inserted between the fitting holes 4b. Further, the outer peripheral surface and the inner peripheral surface of the transmission member 12 are respectively connected to the fitting holes 4 of the screw sleeve 4.
A fixing member 5 as shown in FIGS.
are fixed to the screw sleeve 4 in a circular manner with two bolts 14, pressing the transmission member 12 and tightening the circumferential surface 1 of the fitting hole 4b.
It is brought into close contact with the circumferential surface of the truncated conical saucer 11. Note that the conical surface of the truncated conical saucer 11, the circumferential surface of the fitting hole 4b, and the inner and outer circumferential surfaces of the transmission member 12 are polished so that the frictional resistance when these are in close contact is increased. There is. Also, in Fig. 2, 13) is a washer.

以上のような構成において、スクリュー軸１をスクリュ
ースリーブ４に固着するときは、スクリュー軸の端部に
円錐台状受皿１１を止めねじ１３で固着し嵌入穴４ｂに
挿入した後、伝動部材１２を２個管状にして円錐台状受
皿１１と嵌合穴４ｂの周壁間に挿入し、固定部材５で伝
動部材１２を抑圧挿入保持して伝動部材１２と円錐台状
受皿１１及び嵌合穴４ｂの周面とを密着させてボルト１
４で固定部材５をスクリュースリーブ４に固着する。そ
して、射出成形機を駆動し、スプライン軸を回転すれば
、スクリュースリーブ４も回転し、伝動部材１２を介し
て円錐台状景ｆ［ｎ１１．スクリュー軸１を回転させる
。そして、スクリューの回転により成形材料が可塑化し
て、スクリュー軸１が押戻され（第１図、第２図中右方
）、円錐台状受皿１１がスクリュースリーブ４の嵌合穴
４ｂの底面を押圧し、プレッシャープレー１−３に加え
られた背圧に抗して、プレッシャープレート３を押戻す
こととなる。又、射出時においては、プレッシャープレ
ート３が駆動手段（図示せず）により第１図中左方に移
動され、スクリュースリーブ４が円錐台状受皿１１の底
面を押圧して、スクリューを前進させ（第１．第２図左
方）、射出を行うこととなる。このように、射出成形機
の動作は、スクリュー軸１を回転する力、スクリュー軸
１を後端（スクリュー２が設けられてない端部）を押圧
する力、スクリュー軸１が駆動部材であるスクリュース
リーブ４を押圧する力が主に加わるものであって、スク
リュー軸１とスクリュースリーブ４を引き離そうとする
力（第１図、第２図において、スクリュー軸１自体を左
方に移動させようとする力、又はスクリュ−スリーブ４
自体を右方に移動させＪ：うとする力）は加わらないか
ら、固定部材５で固定された伝動部材１２を嵌合穴４ｂ
及び円錐台状受皿１１の周面との密着から引き離すよう
な力は加わらないず、安定した固着が得られる。In the above configuration, when fixing the screw shaft 1 to the screw sleeve 4, fix the truncated conical receiver 11 to the end of the screw shaft with the set screw 13, insert it into the fitting hole 4b, and then insert the transmission member 12. Two tubular pieces are inserted between the circumferential wall of the truncated conical receiver 11 and the fitting hole 4b, and the transmission member 12 is pressed and held by the fixing member 5, so that the transmission member 12, the truncated conical receiver 11, and the fitting hole 4b are inserted. Screw the bolt 1 in close contact with the circumferential surface.
4, the fixing member 5 is fixed to the screw sleeve 4. When the injection molding machine is driven and the spline shaft is rotated, the screw sleeve 4 also rotates, and the truncated conical shape f[n11. Rotate the screw shaft 1. Then, the molding material is plasticized by the rotation of the screw, and the screw shaft 1 is pushed back (right side in FIGS. 1 and 2), and the truncated conical saucer 11 touches the bottom surface of the fitting hole 4b of the screw sleeve 4. The pressure plate 3 is pushed back against the back pressure applied to the pressure play 1-3. During injection, the pressure plate 3 is moved to the left in FIG. 1 by a driving means (not shown), and the screw sleeve 4 presses the bottom of the truncated conical tray 11 to advance the screw ( 1. Injection will be performed (left side in Figure 2). In this way, the operations of an injection molding machine include the force that rotates the screw shaft 1, the force that presses the rear end of the screw shaft 1 (the end where the screw 2 is not provided), and the force that presses the rear end of the screw shaft 1 (the end where the screw 2 is not installed). The force that presses the sleeve 4 is mainly applied, and the force that tries to separate the screw shaft 1 and the screw sleeve 4 (in Figures 1 and 2, the force that tries to move the screw shaft 1 itself to the left) force or screw sleeve 4
Since no force is applied to move the transmission member 12 to the right, the transmission member 12 fixed by the fixing member 5 is inserted into the fitting hole 4b.
Moreover, no force is applied to separate the truncated conical tray 11 from its close contact with the circumferential surface, and stable adhesion can be obtained.

また、スクリュー軸１を交換するときは、ボルト１４を
取外し固定部材５を取外すだけで簡単にスクリュー軸１
を取外すことができる。Furthermore, when replacing the screw shaft 1, the screw shaft 1 can be easily replaced by simply removing the bolt 14 and removing the fixing member 5.
can be removed.

発明の効果 以上）本べたように、本発明は簡単な構成で、スクリュ
ー軸の着脱が容易で、かつ、射出成形機のスクリュー軸
に加わる力の方向を利用してスクリュー軸と駆動部材の
結合が確実に行われるようにしたもめである。As described above, the present invention has a simple structure, allows easy attachment and detachment of the screw shaft, and connects the screw shaft and the driving member by utilizing the direction of the force applied to the screw shaft of the injection molding machine. This is a struggle to ensure that this is carried out.

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

第１図は、本発明の一実施例の要部説明図、第２図は、
同実施例におけるスクリュー軸と駆動部材との結合機構
を示す図、第３図は円錐台状受皿の斜視図、第４図（イ
）は伝動部材の平面図、第４図（ロ）は同正面図、第５
図（イ）は固定部材の平面図、第５図（ロ）は、同正面
図である。 １・・・スクリュー軸、２・・・スクリュー、３・・・
プレッシャープレート、４・・・スクリュースリーブ、
５・・・固定部材、６・・・スプライン軸、７・・・ナ
ツト、４ａ・・・７ラン９部、４ｂ・・・嵌合穴、１１
・・・円錐台状受皿、１２・・・伝動部材、１３・・・
座金、１４・・・ボルト。FIG. 1 is an explanatory diagram of the main part of an embodiment of the present invention, and FIG.
3 is a perspective view of a truncated conical saucer, FIG. 4(a) is a plan view of the transmission member, and FIG. Front view, 5th
Figure (A) is a plan view of the fixing member, and Figure 5 (B) is a front view of the same. 1...Screw shaft, 2...Screw, 3...
Pressure plate, 4... screw sleeve,
5... Fixing member, 6... Spline shaft, 7... Nut, 4a... 7 run 9 parts, 4b... Fitting hole, 11
...Truncated conical saucer, 12...Transmission member, 13...
Washer, 14... bolt.

Claims (1)

【特許請求の範囲】[Claims] 射出成形機におけるスクリュー軸の駆動部材への結合機
構において、先端にスクリューが設けられたスクリュー
軸の他端に固着された円錐台状受皿と、該円錐台状受皿
が固着されたスクリュー軸の端部が嵌入する上記駆動部
材に設けられた嵌合穴と、内面が上記円錐台状受皿の円
錐面に密着し、外面が上記嵌合穴の周面に密着するよう
嵌入された伝動部材と、該伝動部材と上記スクリューの
他端を上記嵌合穴に固定する上記駆動部材に着脱自在に
設けられた固定部材とからなる射出成形機におけるスク
リュー軸結合機構。In a mechanism for coupling a screw shaft to a driving member in an injection molding machine, a truncated conical saucer fixed to the other end of the screw shaft having a screw at its tip, and an end of the screw shaft to which the truncated conical saucer is fixed. a fitting hole provided in the drive member into which the part is fitted; a transmission member fitted so that the inner surface is in close contact with the conical surface of the truncated conical saucer and the outer surface is in close contact with the circumferential surface of the fitting hole; A screw shaft coupling mechanism for an injection molding machine comprising the transmission member and a fixing member detachably provided on the drive member fixing the other end of the screw in the fitting hole.
JP21808885A 1985-10-02 1985-10-02 Screw shaft joining mechanism in injection molding machine Pending JPS6277917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21808885A JPS6277917A (en) 1985-10-02 1985-10-02 Screw shaft joining mechanism in injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21808885A JPS6277917A (en) 1985-10-02 1985-10-02 Screw shaft joining mechanism in injection molding machine

Publications (1)

Publication Number Publication Date
JPS6277917A true JPS6277917A (en) 1987-04-10

Family

ID=16714447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21808885A Pending JPS6277917A (en) 1985-10-02 1985-10-02 Screw shaft joining mechanism in injection molding machine

Country Status (1)

Country Link
JP (1) JPS6277917A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160129617A1 (en) * 2014-11-06 2016-05-12 Fanuc Corporation Injection member attachment structure for injection molding machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160129617A1 (en) * 2014-11-06 2016-05-12 Fanuc Corporation Injection member attachment structure for injection molding machine
US9808976B2 (en) * 2014-11-06 2017-11-07 Fanuc Corporation Injection member attachment structure for injection molding machine

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