JPH067919U - Powder material leakage prevention structure of injection device - Google Patents
Powder material leakage prevention structure of injection deviceInfo
- Publication number
- JPH067919U JPH067919U JP054441U JP5444192U JPH067919U JP H067919 U JPH067919 U JP H067919U JP 054441 U JP054441 U JP 054441U JP 5444192 U JP5444192 U JP 5444192U JP H067919 U JPH067919 U JP H067919U
- Authority
- JP
- Japan
- Prior art keywords
- injection device
- screw
- powdery material
- prevention structure
- leakage prevention
- 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
Links
- 239000000463 material Substances 0.000 title claims abstract description 41
- 238000002347 injection Methods 0.000 title claims abstract description 16
- 239000007924 injection Substances 0.000 title claims abstract description 16
- 230000002265 prevention Effects 0.000 title claims abstract description 11
- 239000000843 powder Substances 0.000 title claims description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000002994 raw material Substances 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 flakes Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
(57)【要約】
【目的】 加熱筒後端からの粉状材料の漏洩を極力抑え
ることのできる射出装置の粉状材料漏れ防止構造を提供
する。
【構成】 射出装置の加熱筒に内装されるスクリュ本体
１１の送り溝１５後部１５ａに粉状材料を前方に送り込
むネジ部２１よりなる粉状材料送り部２０を形成する。
(57) [Abstract] [Purpose] To provide a powdery material leakage prevention structure of an injection device capable of suppressing leakage of powdery material from the rear end of a heating cylinder as much as possible. [Structure] A powdery material feeding portion 20 including a screw portion 21 for feeding the powdery material forward is formed in a rear portion 15a of a feed groove 15 of a screw body 11 installed in a heating cylinder of an injection device.
Description
【０００１】[0001]
この考案は射出装置の改良に関し、特には射出装置の粉状材料漏れ防止構造に 関する。 The present invention relates to an improvement of an injection device, and more particularly to a powder material leakage prevention structure of the injection device.
【０００２】[0002]
一般に、射出成形に用いられる樹脂原料は、ペレットやフレークあるいは粉体 など種々の形状に形成されていて、これらが単品であるいは適宜に混合されて用 いられる。 Generally, the resin raw material used for injection molding is formed into various shapes such as pellets, flakes, or powders, and these are used individually or as an appropriate mixture.
【０００３】 上記した樹脂原料は、スクリュ後部の材料供給口から加熱筒内に供給され、ス クリュの回転および加熱筒からの加熱によって均一に可塑化されて送り出される 。The above-mentioned resin raw material is supplied into the heating cylinder from the material supply port at the rear of the screw, uniformly plasticized by the rotation of the screw and the heating from the heating cylinder, and is sent out.
【０００４】 しかしながら、粉体または粉体を含有した樹脂原料を用いた場合では、スクリ ュの回転および前進後退による樹脂原料のチャージ中に前記粉状材料がスクリュ 後部と加熱筒内壁とのシール部分のわずかな隙間（０．１〜０．２ｍｍ）から出 て、前記加熱筒後端から外部に漏れ出すことがあった。 かかる粉状材料は加熱筒を汚すだけでなく、空気中を飛散して成形品に付着し 製品不良を発生させる原因ともなっていた。However, when powder or a resin raw material containing powder is used, the powdery material causes a sealing portion between the rear portion of the screw and the inner wall of the heating cylinder during charging of the resin raw material due to rotation and forward / backward movement of the screw. There was a case where it came out from the slight gap (0.1 to 0.2 mm) and leaked to the outside from the rear end of the heating cylinder. Such a powdery material not only pollutes the heating cylinder, but also scatters in the air and adheres to the molded product to cause product defects.
【０００５】[0005]
この考案は、このような問題点に鑑み提案されたものであって、加熱筒後端か らの粉状材料の漏洩を極力抑えることのできる射出装置の粉状材料漏れ防止構造 を提供しようとするものである。 The present invention has been proposed in view of such problems, and it is an object of the present invention to provide a powdery material leakage prevention structure for an injection device capable of suppressing leakage of powdery material from the rear end of the heating cylinder as much as possible. To do.
【０００６】[0006]
すなわち、この考案は、射出装置の加熱筒に内装されるスクリュ本体の送り溝 後部に粉状材料を前方に送り込むネジ部よりなる粉状材料送り部を形成したこと を特徴とする射出装置の粉状材料漏れ防止構造に係る。 In other words, the present invention is characterized in that a powder material feeding portion including a screw portion for feeding the powder material forward is formed at the rear of the feed groove of the screw main body installed in the heating cylinder of the injection device. Related to the material leakage prevention structure.
【０００７】[0007]
以下添付の図面に従ってこの考案を詳細に説明する。 図１はこの考案の射出装置の粉状材料漏れ防止構造が設けられたスクリュの一 例を示す平面図、図２はその要部を拡大した平面図、図３はその３−３線におけ る断面図である。 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a plan view showing an example of a screw provided with a powdery material leakage prevention structure of an injection device of the present invention, FIG. 2 is an enlarged plan view of a main portion thereof, and FIG. 3 is a line 3-3 thereof. FIG.
【０００８】 図１に示されるように、この考案の射出装置の粉状材料漏れ防止構造が設けら れた射出成形用スクリュ１０は、射出装置の加熱筒に内装されるスクリュ本体１ １の後部に粉状材料送り部２０が形成されている。符号１８は射出装置の駆動部 に取り付けられる基部、１９はそのキー溝である。As shown in FIG. 1, an injection molding screw 10 of the present invention provided with a powdery material leakage prevention structure of an injection device is a rear portion of a screw main body 11 installed in a heating cylinder of the injection device. The powdery material feeding portion 20 is formed on the inner surface. Reference numeral 18 is a base portion attached to a drive portion of the injection device, and 19 is a key groove thereof.
【０００９】 スクリュ本体１１は、その外周面に送り溝１５が一体に形成されていて、いわ ゆるメタリングゾーン１２、コンプレッションゾーン１３およびフィードゾーン １４が構成される。この送り溝１５の溝深さおよび溝ピッチは成形される樹脂材 料の種類や成形条件に応じて適宜に変化させて形成することができる。The screw main body 11 has a feed groove 15 integrally formed on its outer peripheral surface, and is constituted by a so-called metering zone 12, compression zone 13 and feed zone 14. The groove depth and groove pitch of the feed groove 15 can be appropriately changed and formed in accordance with the type of the resin material to be molded and the molding conditions.
【００１０】 粉状材料送り部２０はネジ部２１よりなり、スクリュ本体１１後部から漏れ出 そうとする粉状材料を前方に送り込むためのもので、図２に示されるように、前 記送り溝１５の後部１５ａに設けられている。なお、この粉状材料送り部２０は 、前記スクリュ本体１１において、加熱筒に形成された材料供給口直下に相当す る位置より後方に形成されることが好ましい。The powdery material feeding portion 20 is composed of a screw portion 21 and is for feeding powdery material which is about to leak from the rear portion of the screw body 11 to the front, and as shown in FIG. It is provided at the rear portion 15a of the fifteen. In addition, it is preferable that the powdery material feeding portion 20 is formed in the screw body 11 at a position rearward of a position corresponding to directly below a material supply port formed in the heating cylinder.
【００１１】 前記ネジ部２１は、図３からよりよく理解されるように、粉状材料のような粒 径の細かい樹脂材料に対して効率良く食い込むために、スクリュ本体１１におけ る送り溝１５の溝深さよりも浅く形成されていて、０．５ないし１．０ｍｍ程度 に形成されることが好ましい。As will be better understood from FIG. 3, the screw portion 21 has a feed groove 15 in the screw body 11 in order to efficiently bite into a resin material having a fine particle diameter such as a powder material. The groove depth is smaller than the groove depth, and it is preferable that the groove depth is about 0.5 to 1.0 mm.
【００１２】 また、前記粉状材料送り部２０に食い込んだ粉状材料のスクリュ本体１１方向 への送り込み効率を高めるために、前記ネジ部２１はスクリュ１回転における前 進距離の長い多条ネジ部によって形成されることが好ましく、この実施例では６ 条のネジ部２１ａによって構成されている。Further, in order to improve the feeding efficiency of the powdery material bitten into the powdery material feeding portion 20 toward the screw body 11, the screw portion 21 is a multi-threaded screw portion having a long forward distance in one rotation of the screw. It is preferably formed by, and in this embodiment, is constituted by six threaded portions 21a.
【００１３】 この多条ネジ部２１ａは、スクリュの回転にともなって、粉状材料のような粒 径の細かい樹脂材料を確実かつ効率良く前方に送り出すので、かかる樹脂材料の スクリュ後部から加熱筒外部への漏れを極めて少なく抑えることができる。The multi-threaded portion 21a reliably and efficiently sends out a resin material having a fine particle diameter, such as a powder material, to the front side as the screw rotates, so that the rear portion of the screw of the resin material is connected to the outside of the heating cylinder. It is possible to suppress the leakage to the extremely small.
【００１４】[0014]
以上図示し説明したように、この考案の射出装置の粉状材料漏れ防止構造によ れば、スクリュ本体の送り溝後部に設けられた粉状材料送り部が粉状材料を確実 に前方へ送り出すので、従来構造と比較してスクリュ後部からの粉状材料の漏れ を１／１０から１／２０に抑えることができ、加熱筒や成形品が汚されるのを防 ぐことができる。 As shown and described above, according to the powdery material leakage prevention structure of the injection device of the present invention, the powdery material feeding portion provided at the rear of the feed groove of the screw body reliably feeds the powdery material forward. Therefore, the leakage of the powdery material from the rear portion of the screw can be suppressed from 1/10 to 1/20 as compared with the conventional structure, and the heating cylinder and the molded product can be prevented from being contaminated.
【図１】この考案の射出装置の粉状材料漏れ防止構造が
儲けられたスクリュの一例を示す平面図である。FIG. 1 is a plan view showing an example of a screw provided with a powdery material leakage prevention structure of an injection device of the present invention.
【図２】その要部を拡大した平面図である。FIG. 2 is an enlarged plan view of a main part thereof.
【図３】その３−３線における断面図である。FIG. 3 is a sectional view taken along the line 3-3.
１０ スクリュ １１ スクリュ本体 １５ 送り溝 ２０ 粉状材料送り部 ２１ ネジ部 10 screw 11 screw main body 15 feeding groove 20 powder material feeding portion 21 screw portion
Claims (2)
本体の送り溝後部に粉状材料を前方に送り込むネジ部よ
りなる粉状材料送り部を形成したことを特徴とする射出
装置の粉状材料漏れ防止構造。1. A powder material for an injection device, comprising a powder material feeding part formed of a screw part for feeding the powder material forward, formed at a rear part of a feed groove of a screw main body installed in a heating cylinder of the injection device. Material leakage prevention structure.
深さ０．５ないし１．０程度の多条ネジ部より構成され
た射出装置の粉状材料漏れ防止構造。2. The powdery material leakage prevention structure for an injection device according to claim 1, wherein the powdery material feeding portion is composed of a multi-threaded portion having a groove depth of about 0.5 to 1.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP054441U JPH067919U (en) | 1992-07-10 | 1992-07-10 | Powder material leakage prevention structure of injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP054441U JPH067919U (en) | 1992-07-10 | 1992-07-10 | Powder material leakage prevention structure of injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH067919U true JPH067919U (en) | 1994-02-01 |
Family
ID=12970799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP054441U Pending JPH067919U (en) | 1992-07-10 | 1992-07-10 | Powder material leakage prevention structure of injection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH067919U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9144848B2 (en) | 2010-09-30 | 2015-09-29 | Tungaloy Corporation | Cutting edge exchange type cutting tool |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63141717A (en) * | 1986-12-05 | 1988-06-14 | Mitsubishi Heavy Ind Ltd | Fluid transferring device |
| JPH0512116B2 (en) * | 1988-11-25 | 1993-02-17 | Kogyo Gijutsuin |
-
1992
- 1992-07-10 JP JP054441U patent/JPH067919U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63141717A (en) * | 1986-12-05 | 1988-06-14 | Mitsubishi Heavy Ind Ltd | Fluid transferring device |
| JPH0512116B2 (en) * | 1988-11-25 | 1993-02-17 | Kogyo Gijutsuin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9144848B2 (en) | 2010-09-30 | 2015-09-29 | Tungaloy Corporation | Cutting edge exchange type cutting tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3590439A (en) | Shutoff device for an injection molding machine | |
| JPH067919U (en) | Powder material leakage prevention structure of injection device | |
| CN215237815U (en) | Apply to powder metallurgy's automatic feeding machine | |
| JPH08229948A (en) | Material supply device of molding machine | |
| JPH0353867Y2 (en) | ||
| GB1329448A (en) | Screw for an extruding device and a device including said screw | |
| JPH0972426A (en) | Sealing device | |
| JP3211150B2 (en) | Injection equipment of vertical injection molding machine | |
| CN211807478U (en) | Injection molding nozzle of injection molding machine | |
| JPH09242879A (en) | Sealing device | |
| JPH0234016Y2 (en) | ||
| CN213919349U (en) | Automobile is with having high-efficient automatic sizing material leak protection device | |
| JPH0732030Y2 (en) | Resin plasticizer | |
| CN210594346U (en) | Oblique feeding part | |
| GB1245665A (en) | Improvements in or relating to a method and apparatus for plasticizing particulate material | |
| JP3086633U (en) | Extrusion molding machine | |
| JPH0344508Y2 (en) | ||
| JPS607354Y2 (en) | Hopper or feeder device with vent pipe | |
| JPH0551623U (en) | Extruder for molding equipment | |
| JPH0524095A (en) | Extruder for rubber | |
| JPS60132321U (en) | rear vent extruder | |
| JP4157976B2 (en) | Raw material supply mechanism of molding machine | |
| JPS5664849A (en) | Molding and vulcanizing method of rubber | |
| JPH074017U (en) | Injection device for thermosetting resin | |
| JPH07148784A (en) | Injection molding machine |