JPS604016A - Injection molding method and apparatus therefor - Google Patents
Injection molding method and apparatus thereforInfo
- Publication number
- JPS604016A JPS604016A JP58113731A JP11373183A JPS604016A JP S604016 A JPS604016 A JP S604016A JP 58113731 A JP58113731 A JP 58113731A JP 11373183 A JP11373183 A JP 11373183A JP S604016 A JPS604016 A JP S604016A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- melting
- injection
- resin molding
- molding material
- 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.)
- Granted
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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
-
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 る。[Detailed description of the invention] Ru.
従来例の構成とその問題点
従来の射出成形装置は第１図にその具体例を示すように
、ホッパー６内のプラスチック原料を溶融射出するに際
し、モータ４の回転により、減速機５を介してスクリュ
１を回転させる。Structure of the conventional example and its problems As shown in a specific example in FIG. Rotate screw 1.
ホンパー６よりシリンダ２内に供給された原料はスクリ
ュ１の回転による剪断熱と外部ヒータ７からの加熱によ
って可塑化され、シリンダ２の前部に蓄積される。次に
可塑化された原料は射出シリンダ３を作動させることに
よってスクリュ１が前進し、溶融原料を射出するもので
ある。The raw material supplied into the cylinder 2 from the omper 6 is plasticized by the shear heat generated by the rotation of the screw 1 and by heating from the external heater 7, and is accumulated in the front part of the cylinder 2. Next, by operating the injection cylinder 3, the screw 1 advances to inject the plasticized raw material.
以上のような従来例の問題点としては、スクリュ１が、
回転運動及び軸方向に前後運動を行なう為、その構造が
複雑であり、両方の運動に対してそれぞれ駆動源を持つ
必要があった。The problem with the conventional example described above is that the screw 1 is
Since it performs rotational movement and back-and-forth movement in the axial direction, its structure is complicated, and it is necessary to have a separate drive source for both movements.
又、ヒータ７の昇温時間が長くかかるため成形開始２０
〜３０分前にはヒータ７に通電する必要があり、例えば
成形機と組立ラインの連結や同期運転等では大きな障害
となるケースがあった。Also, since it takes a long time to raise the temperature of the heater 7, the molding start 20
It is necessary to energize the heater 7 at least 30 minutes before the start of the process, which may cause a big problem when connecting or synchronously operating a molding machine and an assembly line, for example.
発明の目的
本発明は上記従来の欠点を解消するもので、線状又はベ
ルト状の成形材料を順次溶融するだめ小容量の加熱源に
よって構成可能であシかつ、効率的な材料溶融を可能と
するものである。OBJECT OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and is capable of sequentially melting linear or belt-shaped molding materials, which can be configured with a small-capacity heating source, and which enables efficient material melting. It is something to do.
発明の構成
本発明は線状又はベルト状の樹脂成形材料を、前記樹脂
成形材料の断面形状と略同じ形状の貫通穴を有する射出
プランジャを介して溶融筒に一方よシ送り込み、この溶
融筒内で溶融された樹脂成形材料を溶融筒の他方に設け
た射出ノズルより前記射出プランジャにて射出成形する
射出成形方法及び、線状又はベルト状の樹脂成形材料を
軸方向に移送する材料移送部と、前記樹脂成形材料の断
面形状と略同−の形状の貫通穴を有する射出プランジャ
と、この射出プランジャに対向して一端が開口し、他端
に射出ノズルを備えると共に前記樹脂成形材料を溶融す
る溶融手段を有する溶融筒とからなる射出成形装置を要
旨とし、成形材料を線状又はベルト状とし、これを溶融
筒に順次送り込み１回の射出に必要な少量づつ溶融させ
ることによって、効率の良い短時間の材料の溶融を可能
としたものである。Structure of the Invention The present invention involves feeding a linear or belt-shaped resin molding material into a melting cylinder through an injection plunger having a through hole having a cross-sectional shape substantially the same as the cross-sectional shape of the resin molding material. An injection molding method for injecting a resin molding material melted by the injection plunger from an injection nozzle provided on the other side of a melting cylinder, and a material transfer section for transporting a linear or belt-shaped resin molding material in the axial direction. , an injection plunger having a through hole having a cross-sectional shape substantially the same as the cross-sectional shape of the resin molding material; one end facing the injection plunger is open, the other end is provided with an injection nozzle, and the resin molding material is melted. The gist is an injection molding device consisting of a melting tube with a melting means, and the molding material is made into a wire or belt shape, which is sequentially fed into the melting tube and melted in small amounts necessary for one injection, thereby achieving high efficiency. This allows materials to be melted in a short period of time.
実施例の説明
以下に本発明の第１の実施例を第２図〜第３図にもとづ
いて説明する。図において８は透明なガ５７１１９’）
７７．９□、ｙ ｘ’ｌ！ｙ ！Ｊ ｙ”７−８゜４．
ゎ １に同心円上に配設された赤外線ヒータを構成する
リング状の赤外線ランプでこれらにより溶融筒１０が構
成されている。この赤外線ランプ９の光を全てガラス管
シリンダ８の方向へ反射するだめの反射板１１＆が、反
射板冷却用ウォータージャケット１１の内面に配設され
ている。１２１１Ｊ：射出シリンダであり内部に射出プ
ランジャ１３を有している。また、この射出プランジャ
１３は、線状又はフープ状の樹脂成形材料１４と同じ断
面形状の貫通穴１３ａを有しており、一端は溶融筒１０
の開口部１０ａＫ嵌合している。前記溶融筒１０の先端
には射出ノズル１５、保温用ヒータ１６が設は−射出プ
？ンジャ１３内ρ±溶融成形材料１４−＋ａｐ５溶融筒
１０内の樹脂成形材料を射出ノズル１６よは樹脂成形材
料を巻きつけだボビン、１８は利＃１移送部を構成する
駆動ローラである。DESCRIPTION OF THE EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. 2 and 3. In the figure, 8 is a transparent moth 57119')
77.9□,y x'l! Y! J y”7-8°4.
Ring-shaped infrared lamps constituting an infrared heater are disposed concentrically in 1, and these constitute a melting cylinder 10. A reflector plate 11 & for reflecting all the light from the infrared lamp 9 toward the glass tube cylinder 8 is provided on the inner surface of the water jacket 11 for cooling the reflector plate. 1211J: An injection cylinder and has an injection plunger 13 inside. Moreover, this injection plunger 13 has a through hole 13a having the same cross-sectional shape as the linear or hoop-shaped resin molding material 14, and one end is connected to the melting tube 10.
The opening 10aK is fitted. An injection nozzle 15 and a heat-retaining heater 16 are installed at the tip of the melting cylinder 10. The resin molding material in the melting tube 10 is injected into the nozzle 16 or the bobbin around which the resin molding material is wound. 18 is a driving roller constituting the transfer section #1.
以上の実施例においては、比較的小容量づつ溶融筒１０
に入る樹脂成形材料１４を赤外線ヒータで溶融するため
スクリューによる溶融に比べ、溶融が速く行える。In the embodiments described above, the melting cylinder 10 has a relatively small volume.
Since the resin molding material 14 entering the molding material is melted by an infrared heater, melting can be performed faster than by a screw.
次に本発明の第２の実施例について第３図により説明す
る。Next, a second embodiment of the present invention will be described with reference to FIG.
第３図は溶融筒の別の構成例を示すものであり、その他
の構成は第１の実施例と同一であるだめ、同一番号を付
し説明を省略する。FIG. 3 shows another example of the configuration of the melting cylinder, and since the other configurations are the same as those of the first embodiment, the same numbers will be given and the explanation will be omitted.
２３は溶融筒でありシリンダ２３ａと、その外側にガラ
ス管２４＆内に入った赤外線ヒータ２４を備え、この赤
外線ヒータ２４によって樹脂成形材料１４を溶融するも
のである。この場合赤外線ヒータ２４は溶融筒２３内に
送られる比較的少量の樹脂成形材料１４を順次溶融する
ものであるため、電気的に小容量の赤外線ヒータで良く
効率的な溶融が行える。Reference numeral 23 denotes a melting tube, which includes a cylinder 23a, a glass tube 24 outside the cylinder 23a, and an infrared heater 24 placed inside the cylinder 23a, which melts the resin molding material 14 by the infrared heater 24. In this case, since the infrared heater 24 sequentially melts a relatively small amount of the resin molding material 14 sent into the melting tube 23, efficient melting can be achieved with an electrically small infrared heater.
次に本発明の第３の実施例について第４図により説明す
る。Next, a third embodiment of the present invention will be described with reference to FIG.
第４図は溶融筒の別の構成例を示すものであり、その他
の構成は第１の実施例と同−七あるため、同一番号を付
し説明を省略する。FIG. 4 shows another example of the structure of the melting cylinder, and since the other structures are the same as those of the first embodiment, the same numbers are given and the explanation will be omitted.
２６は高周波を容易に通過させるガラス等で造られたシ
リンダであり外側に高周波誘電加熱手段２６を備え、シ
リンダ２６とによシ溶融筒２了を構成し、樹脂成形材料
１４を溶融するものである。Reference numeral 26 denotes a cylinder made of glass or the like through which high frequency waves can easily pass, and is equipped with a high frequency dielectric heating means 26 on the outside, and together with the cylinder 26 constitutes a melting tube 2 for melting the resin molding material 14. be.
この場合、高周波加熱によってシリンダ２６内に送られ
る比較的少量の樹脂成形材料２Ｑを順次溶融するもので
あるため、バンドヒータあるいはスクリューによる溶融
より溶融が速く行える。In this case, since a relatively small amount of the resin molding material 2Q sent into the cylinder 26 is sequentially melted by high-frequency heating, melting can be performed faster than by a band heater or a screw.
第６図は本発明の他の実施例における溶融的であり、ガ
ラス管シリンダ２８の先端に金属製の射出ノズル２９が
嵌合しているものである。９は赤外線ランプ、１６は保
温用ヒータである。FIG. 6 shows another embodiment of the present invention, in which a metal injection nozzle 29 is fitted to the tip of a glass tube cylinder 28. 9 is an infrared lamp, and 16 is a heat-retaining heater.
発明の効果
このように本発明は線状又はベルト状の樹脂成形材料を
溶融的に順次送シつつ溶融するので、従来のスクリュ及
びバンドヒータ方式に比べて溶融時間が短かく、短時間
で加熱溶融できる。Effects of the Invention As described above, the present invention melts a linear or belt-shaped resin molding material while sequentially feeding it, so compared to the conventional screw and band heater method, the melting time is shorter and heating is possible in a shorter time. Can be melted.
一方、成形材料を予め押出機等で所定のベルト状又は線
状に形成しておくことにより、原料の混線、顔料の分散
などが良好であり、粒状原料を使用した場合に発生する
粉じんの問題がないので、組立ラインの横で使用するこ
ともできるし、ホコリを嫌う精密成形にも適している。On the other hand, by forming the molding material into a predetermined belt shape or linear shape using an extruder or the like in advance, it is possible to prevent cross-contact of the raw materials and dispersion of pigments, etc., and the problem of dust that occurs when granular raw materials are used. Since there is no dust, it can be used next to the assembly line, and it is also suitable for precision molding where dust is averse.
第１図は従来のインラインスクリュ式射出装置の断面図
、第２図は本発明の第１の実施例における射出成形装置
の断面図、第３図及び第４図はそれぞれ本発明の第２．
第３の実施例の断面図、第５図は本発明の他の実施例の
溶融筒の断面図である。
８・・・・・・ガラス管シリンダ、９・・・・・・赤外
線ランプ、１０・・・・・・溶融筒、１２・・・・・・
射出シリンダ、１３・・・−・・射出プランジャー、１
３ａ・・・・・・貫通穴、１９・・・・・・送りローラ
ー。FIG. 1 is a sectional view of a conventional in-line screw type injection device, FIG. 2 is a sectional view of an injection molding device according to a first embodiment of the present invention, and FIGS.
A sectional view of the third embodiment, and FIG. 5 is a sectional view of a melting tube according to another embodiment of the present invention. 8... Glass tube cylinder, 9... Infrared lamp, 10... Melting tube, 12...
Injection cylinder, 13... Injection plunger, 1
3a...Through hole, 19...Feed roller.
Claims (1)
形材料の断面形状と略同じ形状の貫通穴を有する射出プ
ランジャを介して溶融筒に一方よシ送り込み、この溶融
筒内で溶融された樹脂成形材料を溶融筒の他方に設けた
射出ノズルより前記射出プランジャにて射出成形する射
出成形方法。 （２）線状又はベルト状の樹脂成形材料を軸方向に移送
する材料移送部と、前記樹脂成形月相の断面形状と略同
−の形状の貫通穴を有する射出プランジャと、この射出
プランジャに対向して一端が開口し、他端に射出ノズル
、を備えると共に前記樹脂成形材料を溶融する溶融手段
を有する溶融筒とからなる射出成形装置。 （３）溶融筒を透明性を有するガラス管シリンダと、こ
のガラス管シリンダの外周に設けた赤外線ヒータによっ
て構成した特許請求の範囲第２項記載の射出成形装置。 （４）赤外線ヒータをリング状の赤外線ランプとした特
許請求の範囲第３項記載の射出成形装置。 （６）溶融筒を非導電性のシリンダと、このシリンダ外
周に設けた高周波誘電加熱手段とにより構成した特許請
求の範囲第２項記載の射出成形装置０[Scope of Claims] (1) A linear or belt-shaped resin molding material is unidirectionally fed into a melting cylinder through an injection plunger having a through hole having a cross-sectional shape substantially the same as the cross-sectional shape of the resin molding material. An injection molding method in which a resin molding material melted in a melting cylinder is injected using the injection plunger from an injection nozzle provided on the other side of the melting cylinder. (2) A material transfer part that transfers a linear or belt-shaped resin molding material in the axial direction, an injection plunger having a through hole having a shape substantially the same as the cross-sectional shape of the resin molding moon phase, and this injection plunger. An injection molding apparatus comprising a melting cylinder having one end facing each other and having an injection nozzle and a melting means for melting the resin molding material at the other end. (3) The injection molding apparatus according to claim 2, wherein the melting tube is constituted by a transparent glass tube cylinder and an infrared heater provided on the outer periphery of the glass tube cylinder. (4) The injection molding apparatus according to claim 3, wherein the infrared heater is a ring-shaped infrared lamp. (6) Injection molding apparatus 0 according to claim 2, wherein the melting cylinder is constituted by a non-conductive cylinder and high-frequency dielectric heating means provided on the outer periphery of the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58113731A JPS604016A (en) | 1983-06-23 | 1983-06-23 | Injection molding method and apparatus therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58113731A JPS604016A (en) | 1983-06-23 | 1983-06-23 | Injection molding method and apparatus therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS604016A true JPS604016A (en) | 1985-01-10 |
| JPS6345294B2 JPS6345294B2 (en) | 1988-09-08 |
Family
ID=14619706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58113731A Granted JPS604016A (en) | 1983-06-23 | 1983-06-23 | Injection molding method and apparatus therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS604016A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59227432A (en) * | 1983-06-09 | 1984-12-20 | Matsushita Electric Ind Co Ltd | Injection molding machine |
-
1983
- 1983-06-23 JP JP58113731A patent/JPS604016A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59227432A (en) * | 1983-06-09 | 1984-12-20 | Matsushita Electric Ind Co Ltd | Injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6345294B2 (en) | 1988-09-08 |
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