JPH018334Y2 - - Google Patents
Info
- Publication number
- JPH018334Y2 JPH018334Y2 JP1982098934U JP9893482U JPH018334Y2 JP H018334 Y2 JPH018334 Y2 JP H018334Y2 JP 1982098934 U JP1982098934 U JP 1982098934U JP 9893482 U JP9893482 U JP 9893482U JP H018334 Y2 JPH018334 Y2 JP H018334Y2
- Authority
- JP
- Japan
- Prior art keywords
- injection
- raw material
- section
- mixing section
- cylinder
- 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
- 238000002347 injection Methods 0.000 claims description 66
- 239000007924 injection Substances 0.000 claims description 66
- 239000002994 raw material Substances 0.000 claims description 48
- 238000004140 cleaning Methods 0.000 claims description 13
- 238000001746 injection moulding Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 description 4
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
- B29B7/7668—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube having a second tube intersecting the first one with the jets impinging in the second tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
- B29B7/7684—Parts; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
- B29B7/7684—Parts; Accessories
- B29B7/7689—Plunger constructions
- B29B7/7694—Plunger constructions comprising recirculation channels; ducts formed in the plunger
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
本考案は射出成形に用いる注入ヘツドの構造に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of an injection head used in injection molding.
従来、射出成形用注入ヘツドは射出材料が１種
類で、多種類の材料を射出するには注入ヘツドを
交換して射出成形を行なつていた。また、従来の
ヘツドでは１種類の射出材料に対して２成分の原
料しか混合射出できず、３成分以上の場合には、
あらかじめ２分割した材料に予混合しておかなけ
ればならない。さらに、注入機のステムは長スト
ロークであり、注入ヘツドの壁面とはメタルコン
タクトのためにカジリやすく、稼動率を下げる一
因となつている。 Conventionally, the injection head for injection molding has one type of material to be injected, and in order to inject multiple types of materials, the injection head must be replaced to perform injection molding. In addition, with conventional heads, only two components can be mixed and injected for one type of injection material, and in the case of three or more components,
It must be premixed into two parts of the material. Furthermore, the stem of the injection machine has a long stroke, and because of the metal contact with the wall surface of the injection head, it is prone to galling, which is one of the causes of lower operating efficiency.
本考案は射出成形用注入ヘツドに対する上記欠
点を改善するため、注入ヘツドのマルチ化を計る
ことにより達成しようとするもので、射出成形機
の原料注入部において、原料混合部を中央部に設
け、その原料混合部の周囲に原料射出側を接続す
る射出ユニツトを複数個配設し、前記原料混合部
には同軸的にクリーニング軸を設けられ、しか
も、前記射出ユニツトには射出装置とともに原料
射出側に原料循環機構を設けたことを特徴とする
射出成形用注入ヘツドを提供するものである。 The present invention aims to improve the above-mentioned drawbacks of injection molding injection heads by providing multiple injection heads. A plurality of injection units are arranged around the raw material mixing section to connect the raw material injection side, and the raw material mixing section is provided with a cleaning shaft coaxially, and the injection unit has an injection device and a raw material injection side. The present invention provides an injection head for injection molding, characterized in that a raw material circulation mechanism is provided in the injection molding head.
以下、本考案の一実施例につき図により説明す
る。 Hereinafter, one embodiment of the present invention will be explained with reference to the drawings.
第１図に示すように、射出方向と軸心を同じく
する原料混合部１に同軸的にクリーニングユニツ
ト２を直列に並べて設け、原料混合部１の軸心と
直角方向に軸心を合わせた原料射出部３ａを原料
混合部１に接続する射出ユニツト３を２個配設す
る。クリーニングユニツト２は原料混合部１と同
軸的に設けたクリーニング軸４を中心部に設け、
その一端を原料混合部１の中で往復動できるよう
に注入チヤンバ１ａへ遊嵌し、他端はクリーニン
グ軸４の作動用シリンダ５のピストン６に連結す
る。このクリーニング軸４の作動用シリンダ５は
原料混合部１と円筒７で直列に連結する。射出ユ
ニツト３は原料射出部３ａとシリンダ部３ｂとか
らなる。原料射出部３ａは２種類の原料を循環さ
せるために、原料供給口８，１１と原料排出口
９，１２をそれぞれ２個づつ設けている。この供
給口８，１１と排出口９，１２とは原料供給部３
ａの中心部に設けられた循環溝１０，１３とによ
り循環経路８−１０−９および１１−１３−１２
を形成する。循環溝１０，１３は射出用ステム１
４の一部を切欠いた部分と原料射出部３ａの射出
チヤンバ１５との壁面により囲まれた空間で形成
される。射出用ステム１４は原料供給部３ａの軸
シール１５を介して外部に出て、さらにシリンダ
部３ｂのシリンダ１６の中へ入りピストン１７に
結合する。原料供給部３ａとシリンダ部３ｂとの
間は円筒１８で直列に連結される。射出用ステム
１４は循環溝１０，１３を設けているため使用時
に回転しては具合が悪いので、射出用ステム１４
に結合しているピストン１７に回り止め１９を設
ける。回り止め１９はシリンダ１４にシリンダ軸
と平行に棒２０を設け、この棒２０がピストン１
７の回り止め貫通孔２１に遊貫させて形成する。
また、第２図で示すように射出ユニツト３，３′
の取付角を可変にすると注入ヘツドの取付自由度
が増す。 As shown in Fig. 1, the cleaning units 2 are coaxially arranged in series in the raw material mixing section 1 whose axis is the same as the injection direction, and the raw material whose axis is aligned perpendicularly to the axis of the raw material mixing section 1 is installed. Two injection units 3 are provided to connect the injection section 3a to the raw material mixing section 1. The cleaning unit 2 has a cleaning shaft 4 coaxially provided with the raw material mixing section 1 in the center,
One end thereof is loosely fitted into the injection chamber 1a so as to be able to reciprocate within the raw material mixing section 1, and the other end is connected to the piston 6 of the operating cylinder 5 of the cleaning shaft 4. The operating cylinder 5 of the cleaning shaft 4 is connected in series to the raw material mixing section 1 through a cylinder 7. The injection unit 3 consists of a raw material injection section 3a and a cylinder section 3b. The raw material injection section 3a is provided with two raw material supply ports 8 and 11 and two raw material discharge ports 9 and 12, respectively, in order to circulate two types of raw materials. These supply ports 8, 11 and discharge ports 9, 12 are the raw material supply section 3.
Circulation channels 8-10-9 and 11-13-12 are formed by circulation grooves 10 and 13 provided in the center of a.
form. The circulation grooves 10 and 13 are the injection stem 1
4 and the wall surface of the injection chamber 15 of the raw material injection section 3a. The injection stem 14 exits to the outside via the shaft seal 15 of the raw material supply section 3a, further enters the cylinder 16 of the cylinder section 3b, and is coupled to the piston 17. A cylinder 18 connects the raw material supply section 3a and the cylinder section 3b in series. Since the injection stem 14 is provided with circulation grooves 10 and 13, it would be inconvenient if it rotated during use, so the injection stem 14
A rotation stopper 19 is provided on the piston 17 coupled to the piston 17. The detent 19 is provided with a rod 20 in the cylinder 14 parallel to the cylinder axis, and this rod 20 is connected to the piston 1.
It is formed so as to loosely pass through the detent through hole 21 of No. 7.
In addition, as shown in FIG. 2, injection units 3, 3'
By making the mounting angle of the injection head variable, the degree of freedom in mounting the injection head increases.
このような構成の注入ヘツドでは、循環経路８
−１０−９等を通して合計４種の原料を常時流動
さて、任意に選択して射出することができる。４
種類の原料を同時に射出するには、射出ユニツト
３と３′の原料射出部３ａ，３′ａに原料を供給し
て、循環させておく、ピストン６を抜き側５ａに
加圧してクリーニング棒を原料混合部１の射出用
ステム１４が配設された位置よりもクリーニング
棒作動用シリンダ５の方へ移動させる。原料排出
口側の弁（図示せず）を閉じ、原料の排出側の流
れを止める。射出ユニツト３，３′のシリンダ部
３ｂ，３′ｂの引き側１６ａ，１６′ａ（１６′ａ側
は図示せず）へ加圧してステム１４，１４′（１
４′は図示せず）をシリンダ側へ移動させる。こ
れにより射出チヤンバ１５と注入ヘツド１の注入
チヤンバ１ａへ原料が流入し、射出準備が完了す
る。射出時には射出用シリンダ１６，１６′の射
出側１６ｂ，１６′ｂ（１６′，１６′ｂは図示せ
ず）へ加圧してステム１４，１４′を注入ヘツド
側へ移動させ、原料を射出する。次にクリーニン
グユニツト２のシリンダ５の押し出し側５ｂに加
圧して、クリーニング棒４を原料混合部１の注入
チヤンバ１ａの射出側へ移動し、原料を押し出
す。これで射出作業の１サイクルが完了し、次の
射出作業へ入る。原料の種類が２種で良い場合に
は射出ユニツト３，３′の一方を作動させずに置
く。逆に原料の種類を多くしたい時には、射出ユ
ニツトの取付数をこの実施例の２個よりも多数個
の取付ができる原料混合部１を用いれば良い。 In an injection head with such a configuration, the circulation path 8
-10-9 etc., a total of four kinds of raw materials are constantly flowing and can be arbitrarily selected and injected. 4
To inject different kinds of raw materials at the same time, the raw materials are supplied to the raw material injection parts 3a and 3'a of the injection units 3 and 3' and circulated.The piston 6 is pressurized to the extraction side 5a and the cleaning rod is moved. The injection stem 14 of the raw material mixing section 1 is moved toward the cleaning rod operating cylinder 5 from the position where the injection stem 14 is disposed. A valve (not shown) on the raw material discharge port side is closed to stop the flow of raw material on the discharge side. Pressure is applied to the pulling sides 16a, 16'a (the 16'a side is not shown) of the cylinder parts 3b, 3'b of the injection units 3, 3', and the stems 14, 14' (1
4' (not shown) is moved to the cylinder side. As a result, the raw material flows into the injection chamber 15 and the injection chamber 1a of the injection head 1, and preparation for injection is completed. During injection, pressure is applied to the injection sides 16b, 16'b (16', 16'b are not shown) of the injection cylinders 16, 16' to move the stems 14, 14' to the injection head side and inject the raw material. . Next, pressure is applied to the extrusion side 5b of the cylinder 5 of the cleaning unit 2, the cleaning rod 4 is moved to the injection side of the injection chamber 1a of the raw material mixing section 1, and the raw material is extruded. This completes one cycle of injection work and begins the next injection work. If two types of raw materials are sufficient, one of the injection units 3 and 3' is left inoperative. On the other hand, when it is desired to increase the number of types of raw materials, it is sufficient to use the raw material mixing section 1 which can accommodate a larger number of injection units than the two in this embodiment.
以上のように本考案の射出成形用注入ヘツドで
は、射出ユニツトを複数個設けたことにより、多
成分系の射出成形を予混合工程を必要とせずに実
施できる。さらに原料供給系の何系統かを同時に
用いる場合でも注入ヘツドを交換せず射出ユニツ
トの切換操作により使い分けることができる。こ
のため射出成形作業の工数削減、作業時間の短縮
ができる。 As described above, in the injection head for injection molding of the present invention, by providing a plurality of injection units, multi-component injection molding can be carried out without requiring a premixing step. Furthermore, even when several systems of the raw material supply system are used at the same time, they can be used selectively by switching the injection unit without replacing the injection head. Therefore, the number of man-hours and working time for injection molding work can be reduced.
第１図は本考案による射出成形用注入ヘツドの
部分断面図、第２図は射出ユニツトの取付角を可
変にした射出成形用注入ヘツドの正面図である。
１……原料混合部、２……クリーニングユニツ
ト、３，３′……射出ユニツト、４……クリーニ
ング軸、５……シリンダ、６……ピストン、８…
…原料供給口、９……原料排出口、１０……循環
溝、１１……原料供給口、１２……原料排出口、
１３……循環溝、１４……射出用ステム、１６…
…シリンダ、１７……ピストン、１９……回り止
め。
FIG. 1 is a partial sectional view of the injection head for injection molding according to the present invention, and FIG. 2 is a front view of the injection head for injection molding in which the mounting angle of the injection unit is variable. DESCRIPTION OF SYMBOLS 1... Raw material mixing part, 2... Cleaning unit, 3, 3'... Injection unit, 4... Cleaning shaft, 5... Cylinder, 6... Piston, 8...
...Raw material supply port, 9...Raw material discharge port, 10...Circulation groove, 11...Raw material supply port, 12...Raw material discharge port,
13... Circulation groove, 14... Injection stem, 16...
...Cylinder, 17...Piston, 19...Stop rotation.
Claims (1)
を中央部に設け、該原料混合部の周囲に原料射出
側を接続する射出ユニツトを複数個配設し、前記
原料混合部には同軸的にクリーニング軸を設け、
前記射出ユニツトには射出装置とともに原料射出
側に原料循環機構を設けたことを特徴とする射出
成形用注入ヘツド。 In the raw material injection section of the injection molding machine, a raw material mixing section is provided in the center, and a plurality of injection units are arranged around the raw material mixing section to connect the raw material injection side, and a cleaning unit is coaxially connected to the raw material mixing section. Set up an axis,
An injection head for injection molding, characterized in that the injection unit is provided with a raw material circulation mechanism on the raw material injection side together with an injection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982098934U JPS595328U (en) | 1982-06-30 | 1982-06-30 | Injection head for injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982098934U JPS595328U (en) | 1982-06-30 | 1982-06-30 | Injection head for injection molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS595328U JPS595328U (en) | 1984-01-13 |
| JPH018334Y2 true JPH018334Y2 (en) | 1989-03-06 |
Family
ID=30234673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982098934U Granted JPS595328U (en) | 1982-06-30 | 1982-06-30 | Injection head for injection molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS595328U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021129386A1 (en) * | 2021-11-11 | 2022-04-21 | Kraussmaffei Technologies Gmbh | Mixing head and manufacturing method for mixing head |
-
1982
- 1982-06-30 JP JP1982098934U patent/JPS595328U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS595328U (en) | 1984-01-13 |
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