JPS6350173B2 - - Google Patents
Info
- Publication number
- JPS6350173B2 JPS6350173B2 JP55140872A JP14087280A JPS6350173B2 JP S6350173 B2 JPS6350173 B2 JP S6350173B2 JP 55140872 A JP55140872 A JP 55140872A JP 14087280 A JP14087280 A JP 14087280A JP S6350173 B2 JPS6350173 B2 JP S6350173B2
- Authority
- JP
- Japan
- Prior art keywords
- grooves
- groove
- screw
- hopper
- 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
- 238000000465 moulding Methods 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000003086 colorant Substances 0.000 claims 1
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 1
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
- 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
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/297—Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 本発明は多色成形装置に関するものである。[Detailed description of the invention] The present invention relates to a multicolor molding device.
２色或いは多色成形は見ばえが良いので近時多
くの成形品が製造されている。従来かかる多色成
形は複数の射出装置と回転金型等により成形され
ている。このような方式は複数の射出装置を備え
ているため装置が大形化してコストを高くし、操
作も面倒であつた。さらに動力を始としてエネル
ギーの損失も大きい。 Since two-color or multi-color molding has a good appearance, many molded products have been manufactured recently. Conventionally, such multicolor molding has been performed using a plurality of injection devices, rotary molds, and the like. Since such a system is equipped with a plurality of injection devices, the device becomes large and expensive, and the operation is troublesome. Furthermore, there is a large loss of energy, including power.
本発明はかかる観点からなされたものでその目
的は、装置の小形化してコストを低くし、かつ使
用動力を少くすると共に操作の容易な多色成形装
置を提供することにある。 The present invention has been made from this point of view, and its object is to provide a multi-color molding device that is compact, reduces cost, uses less power, and is easy to operate.
以下本発明の詳細について一実施例を示した図
により説明する。なお２色成形は例として説明す
る。 The details of the present invention will be explained below with reference to figures showing one embodiment. Note that two-color molding will be explained as an example.
シリンダ１１の外周にはヒータ１２を設けかつ
その内周にはスクリユ１３を挿入している。スク
リユ１３には元端側から始まる第１溝１４と第１
溝１４の始点からスクリユ１３外径をＤとする３
ないし4D離れた位置から始まる第２溝１５を備
えている。なお溝１５の長さは15ないし20Dであ
る。第１溝１４の始点近くにはシリンダ１１にシ
ヤツタ１６を有する第１ホツパ１７を取付け、ま
た第２溝１５の始点近くにはシリンダ１１にシヤ
ツタ１８を有する第２ホツパ１９を取付けてあ
る。なお第１ホツパ１７の口部は大きくして樹脂
をスクリユに充分喰込ませて供給の安定化を計つ
ている。また第２ホツパ１９は第３図に示すよう
にシリンダ１１の直上にしないで喰込み側に設け
樹脂の喰込を良くしている。 A heater 12 is provided on the outer periphery of the cylinder 11, and a screw 13 is inserted into the inner periphery. The screw 13 has a first groove 14 starting from the base end side and a first groove 14 starting from the base end side.
3 where the outer diameter of the screw 13 is D from the starting point of the groove 14
A second groove 15 starting from a position 4D apart is provided. Note that the length of the groove 15 is 15 to 20D. A first hopper 17 having a shutter 16 on the cylinder 11 is attached near the starting point of the first groove 14, and a second hopper 19 having a shutter 18 on the cylinder 11 is attached near the starting point of the second groove 15. Note that the opening of the first hopper 17 is made large to allow sufficient resin to enter the screw, thereby stabilizing the supply. Further, as shown in FIG. 3, the second hopper 19 is not placed directly above the cylinder 11, but is provided on the biting side to improve the biting of the resin.
次に本発明の作用について説明する。第１ホツ
パ１７に第１の樹脂２１を入れホツパ１９に第２
の樹脂２２を入れ、それぞれのシヤツタ１６およ
び１８を供給量に応じて開く。続いてヒータ１２
に通電しスクリユ１３を回転させれば、第１第２
の樹脂２１および２２はそれぞれ第１第２の溝１
４および１５内で溶融され前進（図において左
進）する。このときスクリユ１３の外径とシリン
ダ１１に内径との差即ちクリアランスは最小にな
つているので、各溝１４および１５内の２１およ
び２２はスクリユ１３の山を超えて隣の溝内に入
ることはない。従つて第１第２の樹脂２１および
２２はそれぞれの溝１４および１５内を単独に溶
融して前進する。ここで成形品の模様に従つて前
記した第１溝１４および第２溝１５は、スクリユ
１３の先端部まで２条とするか或いは最後の数山
を１条にするか選定する。 Next, the operation of the present invention will be explained. Put the first resin 21 into the first hopper 17 and put the second resin into the hopper 19.
of resin 22 is put in, and the respective shutters 16 and 18 are opened according to the supplied amount. Next, heater 12
When the screw 13 is rotated by energizing the first and second
The resins 21 and 22 are in the first and second grooves 1, respectively.
4 and 15 and moves forward (leftward in the figure). At this time, the difference between the outer diameter of the screw 13 and the inner diameter of the cylinder 11, that is, the clearance, is minimized, so that the grooves 21 and 22 in each groove 14 and 15 can pass over the ridge of the screw 13 and enter the adjacent groove. There isn't. Therefore, the first and second resins 21 and 22 individually melt and advance within the respective grooves 14 and 15. Here, depending on the pattern of the molded product, it is selected whether the first groove 14 and the second groove 15 described above are two grooves up to the tip of the screw 13, or one groove is formed at the last few grooves.
なお溝数を３ないし４等の数にすればその数の
多色成形が可能である。 Note that if the number of grooves is set to 3 or 4, multicolor molding of that number is possible.
本発明における多色成形装置は上述したよう
に、１本のスクリユに複数の溝を設けそれらの溝
に複数のホツパを合致するように構成した。従つ
てスクリユは１本であるから従来の複数射出装置
に比較すると形状は小さくかつ運転に要す動力も
少くさらに操作も容易になる等の利点を本発明は
有するものである。 As described above, the multicolor molding apparatus according to the present invention is configured such that a single screw is provided with a plurality of grooves and a plurality of hoppers are fitted into the grooves. Therefore, since there is only one screw, the present invention has advantages such as being smaller in size, requiring less power for operation, and being easier to operate than conventional multiple injection devices.
図は何れも本発明の一実施例を示し第１図は要
部の縦断面図、第２図は第１図の２―２線断面
図、第３図は第１図の３―３線断面図である。
１１…シリンダ、１３…スクリユ、１４，１５
…溝、１７，１９…ホツパ。
Each figure shows an embodiment of the present invention, and FIG. 1 is a vertical sectional view of the main part, FIG. 2 is a sectional view taken along line 2-2 in FIG. 1, and FIG. 3 is a sectional view taken along line 3-3 in FIG. FIG. 11...Cylinder, 13...Screw, 14,15
...Groove, 17, 19...Hotsupa.
Claims (1)
つ前記複数条の溝毎に夫々合致する条数と同一数
のホツパを前記シリンダに取付けることにより、
混合する複数の色の異なる樹脂を前記ホツパにそ
れぞれ入れて前記複数の溝内で単独に溶融させた
後射出するようにした多色成形装置。 ２ ホツパ内の樹脂供給量をシヤツタにより調整
するようにしたことを特徴とする特許請求の範囲
第１項記載の多色成形装置。[Scope of Claims] 1. By providing a plurality of grooves in the screw in the cylinder and attaching to the cylinder the same number of hoppers as the number of grooves corresponding to each of the plurality of grooves,
A multicolor molding apparatus in which a plurality of resins of different colors to be mixed are put into the hopper, individually melted in the plurality of grooves, and then injected. 2. The multicolor molding apparatus according to claim 1, wherein the amount of resin supplied into the hopper is adjusted by a shutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55140872A JPS5764534A (en) | 1980-10-08 | 1980-10-08 | Multi-color molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55140872A JPS5764534A (en) | 1980-10-08 | 1980-10-08 | Multi-color molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5764534A JPS5764534A (en) | 1982-04-19 |
| JPS6350173B2 true JPS6350173B2 (en) | 1988-10-07 |
Family
ID=15278713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55140872A Granted JPS5764534A (en) | 1980-10-08 | 1980-10-08 | Multi-color molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5764534A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6333917U (en) * | 1986-08-25 | 1988-03-04 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53121054A (en) * | 1977-03-31 | 1978-10-23 | Toyoda Gosei Co Ltd | Manufacture of steering wheel having flow patterns |
-
1980
- 1980-10-08 JP JP55140872A patent/JPS5764534A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53121054A (en) * | 1977-03-31 | 1978-10-23 | Toyoda Gosei Co Ltd | Manufacture of steering wheel having flow patterns |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5764534A (en) | 1982-04-19 |
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