JP3129902B2 - Plastic molding machine with colorant or detergent supply - Google Patents
Plastic molding machine with colorant or detergent supplyInfo
- Publication number
- JP3129902B2 JP3129902B2 JP05347407A JP34740793A JP3129902B2 JP 3129902 B2 JP3129902 B2 JP 3129902B2 JP 05347407 A JP05347407 A JP 05347407A JP 34740793 A JP34740793 A JP 34740793A JP 3129902 B2 JP3129902 B2 JP 3129902B2
- Authority
- JP
- Japan
- Prior art keywords
- colorant
- molding machine
- supply device
- heating cylinder
- plastic molding
- 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 - Fee Related
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
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
- B29C45/1816—Feeding auxiliary material, e.g. colouring material
-
- 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
- B29C45/1753—Cleaning or purging, e.g. of the injection unit
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、射出成形機に着色剤
または洗浄剤供給装置（以下着色剤等供給装置と記す）
を備えたプラスチック成形機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for supplying a colorant or a cleaning agent to an injection molding machine (hereinafter referred to as a colorant or the like supply apparatus).
And a plastic molding machine having the same.
【０００２】[0002]
【従来の技術】本発明者等は、先に、着色剤等供給装置
を備える成形機として、特開平５−５７７５０号公報に
示される成形機を提案した。このプラスチック成形機
は、成形機の加熱筒内に着色剤または洗浄剤を供給する
吐出流路及びこの吐出流路内を往復動する作動部材を有
する注入バルブと、前記注入バルブの吐出流路に着色剤
または洗浄剤を送り出す圧入装置とを設けてなる着色剤
等供給装置を、成形機の加熱筒に取り付けたものであ
る。なお、その着色剤等供給装置は、着色剤貯留容器を
所望の着色剤が収容されたものと交換して色替えを行
い、また洗浄剤貯留容器に交換して洗浄剤の供給を行う
ことができるものである。このプラスチック成形機によ
れば、着色剤または洗浄剤の供給経路を短縮でき、それ
により色替え時の洗浄を簡単容易に行なうことができる
等の効果が得られる。2. Description of the Related Art The present inventors have previously proposed a molding machine disclosed in Japanese Patent Application Laid-Open No. 5-57750 as a molding machine provided with a colorant etc. supplying device. This plastic molding machine has an injection valve having a discharge channel for supplying a coloring agent or a cleaning agent into a heating cylinder of the molding machine and an operating member that reciprocates in the discharge channel, and a discharge channel of the injection valve. A coloring agent supply device provided with a press-fitting device for sending out a coloring agent or a cleaning agent is attached to a heating cylinder of a molding machine. In addition, the colorant etc. supply device can change the color by replacing the colorant storage container with the one containing the desired colorant, and can also replace the colorant storage container with the cleaning agent storage container to supply the cleaning agent. You can do it. According to this plastic molding machine, it is possible to shorten the supply route of the coloring agent or the cleaning agent, and to obtain effects such as easy and easy cleaning at the time of color change.
【０００３】しかし、前記のプラスチック成形機にあっ
ては、着色剤を加熱筒内の樹脂溶融部に供給するため、
加熱筒の内壁及びスクリュー部分に着色剤が付着し、色
替え時にその付着着色剤を完全に除去するために、多量
のパージ材料（樹脂および次に使用する着色剤または洗
浄剤等）が必要となる問題が残っている。However, in the above-mentioned plastic molding machine, a colorant is supplied to a resin melting portion in a heating cylinder.
The colorant adheres to the inner wall and screw of the heating cylinder, and a large amount of purge material (resin and colorant or cleaning agent to be used next) is required to completely remove the adhered colorant during color change. Problems remain.
【０００４】[0004]
【発明が解決しようとする課題】そこでこの発明は、前
記の点に鑑みて成されたもので、色替え時のパージ材料
を少量にでき、経済的、かつ簡単合理的に色替えのでき
る着色剤等供給装置を備えたプラスチック成形機を提供
しようとするものである。SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above points, and it is possible to use a small amount of purge material at the time of color change, and it is possible to economically, easily and rationally perform color change. An object of the present invention is to provide a plastic molding machine provided with an agent supply device.
【０００５】[0005]
【課題を解決するための手段】この発明は、着色剤等供
給装置を備えたプラスチック成形機において、一端に成
形機の加熱筒先端部との接続部、他端にミキシングノズ
ルとの接続部、側部に着色剤または洗浄剤供給装置との
接続部が形成されて、前記加熱筒から射出される溶融樹
脂をミキシングノズルに導く樹脂流路と、前記加熱筒内
のスクリュの前後動に応じて前後動可能に挿入されたプ
ランジャにより圧縮または圧縮解除されてミキシングヘ
ッドへの出口を開閉する加圧室を備えた加圧部と、前記
加圧室と前記着色剤等供給装置の接続部間を連通する供
給流路とを有するアタッチメントを、前記ミキシングノ
ズル及び加熱筒先端間に取り付けて、前記着色剤または
洗浄剤供給装置との接続部に着色剤等供給装置を接続し
たことを特徴とする。SUMMARY OF THE INVENTION The present invention relates to a plastic molding machine provided with a colorant or the like supply device, wherein one end of the plastic molding machine is connected to the tip of a heating cylinder of the molding machine, and the other end is connected to a mixing nozzle. A connection portion with a colorant or cleaning agent supply device is formed on a side portion, and a resin flow path that guides a molten resin injected from the heating cylinder to a mixing nozzle, and according to a forward and backward movement of a screw in the heating cylinder. A pressurizing unit having a pressurizing chamber that is compressed or decompressed by a plunger inserted so as to be able to move back and forth and opens and closes an outlet to the mixing head, and a connection between the pressurizing chamber and the connection unit of the coloring agent supply device. An attachment having a supply flow path communicating with the colorant or cleaning agent supply device is connected to a connection between the colorant or cleaning agent supply device by attaching an attachment between the mixing nozzle and the tip of the heating cylinder. .
【０００６】[0006]
【作用】加熱筒から射出される溶融樹脂はアタッチメン
トの樹脂流路を通ってミキシングノズルに到る。一方、
アタッチメントに接続された着色剤等供給装置から供給
される着色剤は、加熱筒における樹脂の可塑化時に、ア
タッチメントの着色剤流路を通って加圧室に到り、その
加圧室で一旦溜まる。そして樹脂射出時における加熱筒
スクリュの前進に応じてプランジャが前進し、加圧室が
圧縮される。それにより加圧室内の着色剤の圧力が高ま
ってミキシングノズルへの出口が開き、加圧室内の着色
剤がミキシングノズルへ吐出される。それとともに、前
記加熱筒から射出された溶融樹脂は、アタッチメントの
樹脂流路に射出されてミキシングノズルへ到る。そし
て、前記着色剤と混合されてミキシングノズルから射出
される。なお、色替え時には着色剤に代えて必要に応じ
洗浄剤が使用される。The molten resin injected from the heating cylinder reaches the mixing nozzle through the resin flow path of the attachment. on the other hand,
The colorant supplied from the colorant or the like supply device connected to the attachment reaches the pressurizing chamber through the colorant flow path of the attachment and temporarily accumulates in the pressurizing chamber during plasticization of the resin in the heating cylinder. . Then, the plunger advances in accordance with the advance of the heating cylinder screw at the time of resin injection, and the pressurizing chamber is compressed. As a result, the pressure of the colorant in the pressurized chamber increases, an outlet to the mixing nozzle opens, and the colorant in the pressurized chamber is discharged to the mixing nozzle. At the same time, the molten resin injected from the heating cylinder is injected into the resin flow path of the attachment and reaches the mixing nozzle. Then, it is mixed with the colorant and ejected from the mixing nozzle. At the time of color change, a cleaning agent is used as needed instead of the colorant.
【０００７】[0007]
【実施例】以下添付の図面に従ってこの発明を詳細に説
明する。図１はこの発明の一実施例に係るプラスチック
成形機のアタッチメント付近を、一部断面で示す側面
図、図２は同成形機において着色剤の吸入時を示す拡大
断面図、図３は同成形機において着色剤の混入時を示す
拡大断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a side view showing a part of the attachment of a plastic molding machine according to an embodiment of the present invention in a partial cross section, FIG. 2 is an enlarged cross section showing a state in which a colorant is sucked in the molding machine, and FIG. FIG. 4 is an enlarged cross-sectional view showing when a colorant is mixed in the press.
【０００８】図１ないし図３に示すプラスチック成形機
１０は、射出成形機の加熱筒１１の先端にアタッチメン
ト２１の後端が取り付けられ、そのアタッチメント２１
の先端にミキシングノズル５１、またアタッチメント２
１の側部に着色剤または洗浄剤の供給装置７１が接続さ
れている。符号Ｓはスクリュである。In a plastic molding machine 10 shown in FIGS. 1 to 3, a rear end of an attachment 21 is attached to a front end of a heating cylinder 11 of an injection molding machine.
Nozzle 51 and attachment 2 at the tip of
A colorant or cleaning agent supply device 71 is connected to one side. Symbol S is a screw.
【０００９】前記アタッチメント２１は、本体ボディ２
２、スリーブ２９、プランジャ３３、開閉ボール３５及
び開閉ボール保持部材３４よりなる。本体ボディ２２
は、図２に示すように、側部に着色剤または洗浄剤の供
給装置との接続部２３、後端に加熱筒１１との接続部２
４、前端にミキシングノズル５１との接続部２５を有す
る筒状のもので、内部には前記スリーブ２９が挿入され
るようになっている。なお、各接続部２３，２４，２５
には各々螺合用の螺子が形成されている。The attachment 21 is provided on the main body 2.
2, a sleeve 29, a plunger 33, an open / close ball 35, and an open / close ball holding member 34. Body 22
As shown in FIG. 2, a connecting portion 23 with a colorant or cleaning agent supply device is provided on a side portion, and a connecting portion 2 with the heating cylinder 11 is provided on a rear end.
4. A cylindrical member having a connection portion 25 with the mixing nozzle 51 at the front end, and the sleeve 29 is inserted inside. In addition, each connection part 23,24,25
Are formed with screws for screwing.
【００１０】着色剤等供給装置との接続部２３には、供
給装置７１の吐出口７２部分が挿入され、その吐出口７
２が後記する着色剤流路３９と内部で通じるようになっ
ている。加熱筒との接続部２４付近の内部には、後端が
加熱筒１１内と通じ、前端が拡大する拡大空間２６が形
成されている。この拡大空間２６は、加熱筒１１から射
出される溶融樹脂を通すための樹脂流路の一部となり、
また、プランジャ３３の後端をスクリュＳの前進後退に
応じて前後動させるための圧力調整部になる。図中２７
は大気開放孔である。The discharge port 72 of the supply device 71 is inserted into the connection portion 23 for connection with the colorant etc. supply device.
2 communicates with a colorant channel 39 described later. An enlarged space 26 in which the rear end communicates with the inside of the heating cylinder 11 and the front end is enlarged is formed in the vicinity of the connection portion 24 with the heating cylinder. This enlarged space 26 becomes a part of a resin flow path for passing the molten resin injected from the heating cylinder 11,
Further, it serves as a pressure adjusting unit for moving the rear end of the plunger 33 back and forth according to the forward and backward movement of the screw S. 27 in the figure
Is an open air hole.
【００１１】スリーブ２９には、次の構成からなる加圧
部３０が設けられている。すなわち、前部が加圧室３２
になったプランジャ摺動孔３１が、スリーブ２９の中心
軸位置に前後端間を貫通して形成され、そのプランジャ
摺動穴３１にプランジャ３３が、加圧室３２を圧縮およ
び圧縮解除し得るように前後摺動可能に収納されてい
る。また加圧室３２の前端には、前部が大径、後部が小
径になった貫通孔の形成された筒状の開閉ボール保持部
材３４が嵌められ、その開閉ボール保持部材３４の大径
孔内に開閉ボール３５が前後動可能に収納され、それら
により前記加圧部３０が構成されている。前記開閉ボー
ル保持部材３４後部の小径孔は、加圧室３２からミキシ
ングヘッドへの出口３６を構成し、開閉ボール３５の前
後動により開閉される。なお、プランジャ３３の外面に
は途中に段部３７が形成されていて、プランジャ３３前
進時にプランジャ摺動孔３１内面の段部３８と当接し、
プランジャ３３の最前進位置を規定する。The sleeve 29 is provided with a pressing portion 30 having the following structure. That is, the front part is the pressure chamber 32
A plunger sliding hole 31 is formed at the center axis position of the sleeve 29 so as to penetrate between the front and rear ends. The plunger 33 is formed in the plunger sliding hole 31 so that the pressurizing chamber 32 can be compressed and decompressed. Is slidably received in the front and rear. At the front end of the pressurizing chamber 32, a cylindrical open / close ball holding member 34 having a through hole with a large diameter at the front and a small diameter at the rear is fitted. The opening / closing ball 35 is accommodated therein so as to be able to move back and forth, and they constitute the pressurizing section 30. The small-diameter hole at the rear of the open / close ball holding member 34 forms an outlet 36 from the pressurizing chamber 32 to the mixing head, and is opened / closed by the forward / backward movement of the open / close ball 35. In addition, a step portion 37 is formed on the outer surface of the plunger 33 in the middle, and when the plunger 33 moves forward, it contacts the step portion 38 on the inner surface of the plunger sliding hole 31,
The most advanced position of the plunger 33 is defined.
【００１２】また、スリーブ２９の外周面には、前記着
色剤等供給装置の接続部２３に装着された吐出口７２と
一部で通じ、前端が前記加圧室３２と通じる着色剤流路
３９が、螺旋状に後部から前部にかけて形成されてい
る。さらに、スリーブ２９内には、後端で前記本体ボデ
ィの拡大空間２６と通じ、前端でミキシングノズル５１
と通じる樹脂流路４０が、前記プランジャ摺動孔３１の
外側に環状に形成されている。なお、４１はスリーブ２
９に形成された大気開放口である。A part of the outer peripheral surface of the sleeve 29 communicates with a discharge port 72 attached to the connection part 23 of the coloring agent supply device, and a front end of the coloring agent channel 39 communicates with the pressurizing chamber 32. Are spirally formed from the rear to the front. Further, the rear end of the sleeve 29 communicates with the enlarged space 26 of the main body, and the front end thereof has a mixing nozzle 51.
A resin flow path 40 is formed in an annular shape outside the plunger sliding hole 31. 41 is a sleeve 2
9 is an atmosphere opening port formed in FIG.
【００１３】ミキシングノズル５１は、後端部に前記ア
タッチメント２１との螺合用接続部５２、前端部に射出
口５３の形成されたノズル本体５５と、その本体５５内
に挿入されたミキシングヘッド５６よりなる。ミキシン
グヘッド５６は、大径部５７と小径部５８が交互した、
いわゆるロケット状の外形を有し、その大径部５７の外
面にミキシング効率を高めるための溝５９が形成されて
いる。この溝５９を含むミキシングヘッド５６外面とノ
ズル本体５５内面間の隙間は、前記アタッチメント２１
の樹脂流路４０と通じる射出流路６０を構成する。ま
た、このミキシングヘッド５６の後部６１には、後部６
１外周面とスリーブ２９前端部の開閉ボール保持部材３
４間を連通する連通流路６６が形成されている。この連
通流路６６を介して、前記スリーブの加圧室３２とミキ
シングノズル５１の射出流路６０が連通される。図中の
符号６７は、開閉ボールの前後動を所定量に規制するた
めの突起である。なお、ミキシングヘッドの後部６１は
スリーブ２９の前端部に螺合される。The mixing nozzle 51 has a connection portion 52 for screwing with the attachment 21 at a rear end, a nozzle body 55 having an injection port 53 formed at a front end, and a mixing head 56 inserted into the body 55. Become. The mixing head 56 has a large diameter portion 57 and a small diameter portion 58 alternated.
It has a so-called rocket-like outer shape, and a groove 59 for improving mixing efficiency is formed on the outer surface of the large diameter portion 57. The gap between the outer surface of the mixing head 56 including the groove 59 and the inner surface of the nozzle body 55 is
The injection flow path 60 communicating with the resin flow path 40 is formed. The rear part 61 of the mixing head 56 has a rear part 6.
1 Opening / closing ball holding member 3 at outer peripheral surface and front end of sleeve 29
A communication passage 66 communicating between the four is formed. The pressurizing chamber 32 of the sleeve and the injection channel 60 of the mixing nozzle 51 are communicated via the communication channel 66. Reference numeral 67 in the figure denotes a projection for regulating the forward and backward movement of the opening and closing ball to a predetermined amount. The rear part 61 of the mixing head is screwed to the front end of the sleeve 29.
【００１４】一方、着色剤等供給装置７１は、着色剤等
の吐出口７２を有するものであればよい。この実施例で
は本発明者等が先に特開平５−５７７５０号公報で示し
たのと同じもの、すなわち注入バルブ７５と圧入装置８
１を有するものを用いている。注入バルブ７５は、吐出
流路７６内に挿入した作動部材（図示せず）を駆動モー
タＭにより往復動させて着色剤等の圧入口７７を開閉
し、また、エアシリンダ装置７８により弁棒７９を往復
動させて吐出口７２を開閉させるものである。圧入装置
８１は、内部に着色剤または洗浄剤を収容した可撓性袋
状物からなるカートリッジ８２を貯留容器８３内に有
し、そのカートリッジ８２後部をエア孔８３から吹き込
む圧縮エアにより押圧して、カートリッジ８２内の着色
剤または洗浄剤を前記注入バルブの吐出流路７６に圧入
するものである。On the other hand, the colorant supply device 71 may have a discharge port 72 for colorant or the like. In this embodiment, the injection valve 75 and the press-fitting device 8 are the same as those previously shown in Japanese Patent Application Laid-Open No. 5-57750 by the present inventors.
1 is used. The injection valve 75 reciprocates an operating member (not shown) inserted into the discharge flow path 76 by the drive motor M to open and close the pressure inlet 77 for the colorant or the like. Is reciprocated to open and close the discharge port 72. The press-fitting device 81 has a cartridge 82 made of a flexible bag containing a coloring agent or a cleaning agent in a storage container 83, and presses the rear portion of the cartridge 82 with compressed air blown from an air hole 83. The colorant or the cleaning agent in the cartridge 82 is pressed into the discharge flow path 76 of the injection valve.
【００１５】このようにしてなる着色剤等供給装置を有
するプラスチック成形機１０は、次のようにして作動す
る。加熱筒１１における樹脂の可塑化完了時点で、スク
リュＳを強制的に後退させて加熱筒１１の圧力を抜く、
いわゆるサックバックを行う。これにより、加熱筒１１
前端と連通するアタッチメント２１後部の拡大空間２６
が負圧気味になって、図２に示すように、アタッチメン
ト１１内のプランジャ３３が後退し、その結果プランジ
ャ３３前方の加圧室３２も負圧気味になり、ミキシング
ヘッドへの出口３６付近に存在する開閉ボール３５が加
圧室３２側へ吸引される。それに加えて、前記ミキシン
グヘッドの連通流路６６内に残存する溶融樹脂が、樹脂
の高い粘度により射出時の圧力をいまだ大部分保持して
いるため、前記開閉ボール３５を強く加圧室３２側へ押
して出口３６に圧着させ、該出口３６を確実に閉じる。The plastic molding machine 10 having the colorant etc. supplying device operates in the following manner. At the time of completion of the plasticization of the resin in the heating cylinder 11, the screw S is forcibly retracted to release the pressure of the heating cylinder 11,
Perform so-called suckback. Thereby, the heating cylinder 11
Enlarged space 26 at the rear of the attachment 21 communicating with the front end
Becomes slightly negative, and as shown in FIG. 2, the plunger 33 in the attachment 11 retreats. As a result, the pressurizing chamber 32 in front of the plunger 33 also becomes slightly negative, near the outlet 36 to the mixing head. The existing opening / closing ball 35 is sucked into the pressure chamber 32 side. In addition, since the molten resin remaining in the communication flow path 66 of the mixing head still largely retains the pressure at the time of injection due to the high viscosity of the resin, the openable / closable ball 35 is strongly pressed to the pressure chamber 32 side. To make it press against the outlet 36, and close the outlet 36 securely.
【００１６】次いで、加熱筒１１内で樹脂の溶融がなさ
れている間に、着色剤等の供給装置７１を作動させて、
吐出口７２から着色剤をアタッチメント２１の着色剤流
路３９に吐出する。吐出された着色剤は、着色剤流路３
９を通って加圧室３２に到る。この時、ミキシングヘッ
ドへの出口３６は前記のように開閉ボール３５により確
実に閉じられているため、着色剤がミキシングヘッド５
１側へ流れることなく加圧室３２内で所定量溜まる。Next, while the resin is being melted in the heating cylinder 11, the supply device 71 for the colorant or the like is operated,
The colorant is discharged from the discharge port 72 to the colorant channel 39 of the attachment 21. The discharged colorant is supplied to the colorant channel 3
9 to the pressure chamber 32. At this time, since the outlet 36 to the mixing head is securely closed by the opening / closing ball 35 as described above, the colorant is mixed with the mixing head 5.
A predetermined amount is accumulated in the pressure chamber 32 without flowing to the first side.
【００１７】その後、溶融樹脂の射出のために加熱筒１
１内のスクリュＳが前進すると、加熱筒１１内の溶融樹
脂がアタッチメント２１後部の拡大空間２６を経て樹脂
流路４０に流れ、さらにミキシングヘッドの射出流路６
０に到る。また、それと同時に、前記スクリュＳの前進
により拡大空間２５が加圧されてプランジャ３３の後端
を押し、プランジャ３３を前進させる。そのプランジャ
３３の前進によりプランジャ３３前方にある加圧室３２
が圧縮加圧されて、図３のように、前記開閉ボール３５
がミキシングヘッドへの出口３６から離れ、加圧室３２
内の着色剤が出口３６から連通流路６６を通ってミキシ
ングノズルの射出流路６０に到る。そして、その着色剤
と溶融樹脂はミキシングノズルの射出流路６０で合流
し、混合樹脂としてミキシングノズル先端の射出口５３
から射出される。その際、混合樹脂はミキシングヘッド
の狭い溝５９を断続的に通るため、射出口５３に到るま
でに効率良く混練りされ、着色剤が樹脂表面に浮き出る
のが防止される。前記射出口５３から射出された樹脂は
マーブル模様のものとなっている。After that, the heating cylinder 1 is injected to inject the molten resin.
1, the molten resin in the heating cylinder 11 flows through the enlarged space 26 at the rear of the attachment 21 to the resin flow path 40, and further flows into the injection flow path 6 of the mixing head.
Reaches 0. At the same time, the expansion space 25 is pressurized by the advancement of the screw S, and pushes the rear end of the plunger 33 to move the plunger 33 forward. When the plunger 33 advances, the pressurizing chamber 32 in front of the plunger 33 is moved.
Is compressed and pressurized, and as shown in FIG.
Moves away from the outlet 36 to the mixing head,
The colorant in the inside reaches the injection channel 60 of the mixing nozzle from the outlet 36 through the communication channel 66. Then, the coloring agent and the molten resin join in the injection channel 60 of the mixing nozzle, and as a mixed resin, the injection port 53 at the tip of the mixing nozzle.
Emitted from. At this time, since the mixed resin intermittently passes through the narrow groove 59 of the mixing head, the mixed resin is efficiently kneaded before reaching the injection port 53, and the colorant is prevented from floating on the resin surface. The resin injected from the injection port 53 has a marble pattern.
【００１８】その後、再び前記のようにスクリュＳが後
退して樹脂の可塑化がなされ、次の射出に備えられる。
なお、洗浄の際は、着色剤等供給装置７１における圧入
装置８１の貯留容器８３を、洗浄剤の収容されたものに
代えて行う。Thereafter, the screw S retreats again as described above to plasticize the resin, and is ready for the next injection.
At the time of cleaning, the storage container 83 of the press-fitting device 81 in the colorant etc. supply device 71 is replaced with a container containing a cleaning agent.
【００１９】[0019]
【発明の効果】以上図示し説明したように、この発明の
プラスチック成形機によれば、加熱筒先端に設けたアタ
ッチメントに着色剤等供給装置を接続するため、加熱筒
内には着色剤が吐出されず、加熱筒内およびスクリュに
着色剤が付着しない。そのため、加熱筒より先のアタッ
チメントおよびミキシングノズルのみに着色剤が付着す
ることになって、色替え時に必要となるパージ材料が少
量で済み、きわめて経済的であるとともに、色替え作業
も短時間、かつ簡単に済ませることができる。As shown and described above, according to the plastic molding machine of the present invention, the coloring agent is discharged into the heating cylinder because the coloring agent supply device is connected to the attachment provided at the tip of the heating cylinder. The coloring agent does not adhere to the inside of the heating cylinder and the screw. For this reason, the colorant adheres only to the attachment and the mixing nozzle before the heating cylinder, so that only a small amount of purge material is required at the time of color change, which is extremely economical. And it can be done easily.
【図面の簡単な説明】[Brief description of the drawings]
【図１】この発明の一実施例に係る着色剤等供給装置を
備えたプラスチック成形機のアタッチメント付近を、一
部断面で示す側面図である。FIG. 1 is a side view showing, in partial cross section, the vicinity of an attachment of a plastic molding machine provided with a coloring agent supply device according to one embodiment of the present invention.
【図２】同成形機において着色剤の吸入時を示す拡大断
面図である。FIG. 2 is an enlarged cross-sectional view showing the molding machine when a colorant is inhaled.
【図３】同成形機において着色剤の混入時を示す拡大断
面図である。FIG. 3 is an enlarged cross-sectional view showing when a colorant is mixed in the molding machine.
１０ 着色剤等供給装置を備えたプラスチック成形機 １１ 加熱筒 ２１ アタッチメント ２３ 着色剤または洗浄剤供給装置との接続部 ２４ 加熱筒先端部との接続部 ２５ ミキシングノズルとの接続部 ３０ 加圧部 ３２ 加圧室 ３３ プランジャ ３６ ミキシングヘッドへの出口 ３９ 着色剤流路 ４０ 樹脂流路 ５１ ミキシングノズル ５６ ミキシングヘッド ７１ 着色剤等供給装置 ７２ 着色剤等供給装置の吐出口 Ｓ スクリュ DESCRIPTION OF SYMBOLS 10 Plastic molding machine provided with a coloring agent etc. supply apparatus 11 Heating cylinder 21 Attachment 23 Connection part with a coloring agent or cleaning agent supply apparatus 24 Connection part with a heating cylinder tip part 25 Connection part with a mixing nozzle 30 Pressurization part 32 Pressurizing chamber 33 Plunger 36 Exit to mixing head 39 Colorant flow path 40 Resin flow path 51 Mixing nozzle 56 Mixing head 71 Colorant etc. supply device 72 Colorant etc. supply device discharge port S Screw
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−268419（ＪＰ，Ａ) 特開 昭64−38217（ＪＰ，Ａ) 特開 平５−57750（ＪＰ，Ａ) 実開 昭60−123214（ＪＰ，Ｕ) 実開 昭62−109914（ＪＰ，Ｕ) 実開 昭59−53918（ＪＰ，Ｕ) 実開 昭62−85406（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 45/00 - 45/24 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-268419 (JP, A) JP-A-64-38217 (JP, A) JP-A-5-57750 (JP, A) 123214 (JP, U) Japanese Utility Model Showa 62-109914 (JP, U) Japanese Utility Model Showa 59-53918 (JP, U) Japanese Utility Model Showa 62-85406 (JP, U) (58) Field surveyed (Int. 7 , DB name) B29C 45/00-45/24
Claims (1)
ラスチック成形機において、 一端に成形機の加熱筒先端部との接続部、他端にミキシ
ングノズルとの接続部、側部に着色剤または洗浄剤供給
装置との接続部が形成されて、前記加熱筒から射出され
る溶融樹脂をミキシングノズルに導く樹脂流路と、前記
加熱筒内のスクリュの前後動に応じて前後動可能に挿入
されたプランジャにより圧縮または圧縮解除されてミキ
シングヘッドへの出口を開閉する加圧室を備えた加圧部
と、前記加圧室と前記着色剤または洗浄剤供給装置の接
続部間を連通する着色剤流路とを有するアタッチメント
を、 前記ミキシングノズル及び加熱筒先端間に取り付けて、
前記着色剤または洗浄剤供給装置との接続部に着色剤ま
たは洗浄剤供給装置を接続したことを特徴とする着色剤
または洗浄剤供給装置を備えたプラスチック成形機。1. A plastic molding machine provided with a colorant or cleaning agent supply device, comprising, at one end, a connection portion with a heating cylinder tip portion of the molding machine, at the other end, a connection portion with a mixing nozzle, and at a side portion, a colorant or A connection portion with the cleaning agent supply device is formed, and a resin flow path that guides the molten resin injected from the heating cylinder to the mixing nozzle, and is inserted so as to be able to move back and forth according to the back and forth movement of the screw in the heating cylinder. A pressurizing section having a pressurizing chamber that is compressed or decompressed by a plunger and that opens and closes an outlet to the mixing head, and a colorant that communicates between the pressurizing chamber and a connection portion of the colorant or cleaning agent supply device. Attachment having a flow path, attached between the mixing nozzle and the tip of the heating cylinder,
A plastic molding machine provided with a colorant or detergent supply device, wherein a colorant or detergent supply device is connected to a connection portion with the colorant or detergent supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05347407A JP3129902B2 (en) | 1993-12-24 | 1993-12-24 | Plastic molding machine with colorant or detergent supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05347407A JP3129902B2 (en) | 1993-12-24 | 1993-12-24 | Plastic molding machine with colorant or detergent supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07186192A JPH07186192A (en) | 1995-07-25 |
| JP3129902B2 true JP3129902B2 (en) | 2001-01-31 |
Family
ID=18390015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05347407A Expired - Fee Related JP3129902B2 (en) | 1993-12-24 | 1993-12-24 | Plastic molding machine with colorant or detergent supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3129902B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115195029B (en) * | 2022-08-11 | 2023-12-19 | 绍兴新美包装有限公司 | Wear-resisting cosmetic packaging bottle injection molding machine with clearance system |
-
1993
- 1993-12-24 JP JP05347407A patent/JP3129902B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07186192A (en) | 1995-07-25 |
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