JPH04449B2 - - Google Patents

Info

Publication number
JPH04449B2
JPH04449B2 JP1146384A JP1146384A JPH04449B2 JP H04449 B2 JPH04449 B2 JP H04449B2 JP 1146384 A JP1146384 A JP 1146384A JP 1146384 A JP1146384 A JP 1146384A JP H04449 B2 JPH04449 B2 JP H04449B2
Authority
JP
Japan
Prior art keywords
mold
molded
molded product
parts
molds
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
Application number
JP1146384A
Other languages
Japanese (ja)
Other versions
JPS60155421A (en
Inventor
Keiji Azuma
Seizo Machida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP1146384A priority Critical patent/JPS60155421A/en
Publication of JPS60155421A publication Critical patent/JPS60155421A/en
Publication of JPH04449B2 publication Critical patent/JPH04449B2/ja
Granted legal-status Critical Current

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
    • B29C45/0003—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor of successively moulded portions rigidly joined to each other
    • 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
    • B29C45/03—Injection moulding apparatus
    • B29C45/04—Injection moulding apparatus using movable moulds or mould halves
    • B29C45/0441—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement
    • B29C45/045—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement mounted on the circumference of a rotating support having a rotating axis perpendicular to the mould opening, closing or clamping direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 （技術分野） 本発明は機器等に組込まれる一揃いの合成樹脂
成形部品を、それらが異種形状のものであつて
も、組立順に接続された状態で連続的に成形し、
且つ、組立工程へ連続的に供給する方法及びその
ための装置に関する。Detailed Description of the Invention (Technical Field) The present invention continuously molds a set of synthetic resin molded parts to be incorporated into equipment, etc., in a state in which they are connected in the order of assembly, even if they have different shapes. death,
The present invention also relates to a method of continuously supplying to an assembly process and an apparatus therefor.

（背景技術） 従来、機器等に組込まれる成形部品は１個ずつ
成形されてから組立工程へ供給されていたため、
成形後の工程で、成形部品を整列させるためのパ
ーツフイーダが不可欠であり、複雑な形状の部品
はパーツフイーダによる整列が困難なため人手に
依らざるを得ずコストアツプを招いていた。(Background technology) Conventionally, molded parts to be incorporated into equipment, etc. were molded one by one and then supplied to the assembly process.
In the post-molding process, a parts feeder is essential to align the molded parts, and parts with complex shapes are difficult to align using the parts feeder, so they have to be done manually, which increases costs.

また、パーツフイーダを使用したり、一時的ス
トツク、或は、運搬などのため袋詰めされること
により成形部品に傷が付く難点のほか、一時的ス
トツクには、パレツトや袋が必要となり、部品管
理が煩しいものとなつていた。 In addition, molded parts can be damaged by using a parts feeder, temporarily stocked, or packed in bags for transportation, etc., and pallets and bags are required for temporary stocking, making parts management difficult. was becoming a nuisance.

（発明の目的） 本発明は上記のような従来技術に鑑み、成形部
品を１個ずつ成形するのではなく、異種形状の各
部品であつても機器等に組込まれる組立順に各部
品が接続された状態で連続成形され、且つ、この
連続した成形部品がそのまま次工程へ搬送される
成形方法とそのための装置を提供することを目的
とする。(Object of the Invention) In view of the above-mentioned conventional technology, the present invention does not mold parts one by one, but connects each part in the assembly order in which it is assembled into a device, etc., even if the parts have different shapes. It is an object of the present invention to provide a molding method in which continuous molding is performed in a state in which the molded parts are continuously molded, and in which the continuous molded parts are conveyed as they are to the next process, and an apparatus therefor.

（発明の開示） 本発明の実施の一例を図に拠り説明する。(Disclosure of invention) An example of implementation of the present invention will be described with reference to the drawings.

第１図及び第２図は、従来の成形方法の一般的
な金型構造の一例を示す断面図で、第１図が型閉
状態、第２図が型開状態を示す。図に於て、１は
固定側取附板、２は可動側取附板、３はキヤビテ
イ３ａを有する固定側型板、４はコア４ａを有す
る可動側型板、５はガイドピン、６はエジエクタ
ーピン、７はエジエクタープレート、８はスプル
ーブツシユ、９はロケートリング、１０はスペー
サブロツク、１１は成形品、１１ａはランナー、
１１ｂはスプルーである。 FIGS. 1 and 2 are cross-sectional views showing an example of a general mold structure for a conventional molding method, with FIG. 1 showing the mold in a closed state and FIG. 2 showing the mold in an open state. In the figure, 1 is a fixed side mounting plate, 2 is a movable side mounting plate, 3 is a fixed side template having a cavity 3a, 4 is a movable side template having a core 4a, 5 is a guide pin, and 6 is a movable side template. Ejector pin, 7 is an ejector plate, 8 is a sprue bush, 9 is a locate ring, 10 is a spacer block, 11 is a molded product, 11a is a runner,
11b is a sprue.

而して、成形品１１は型閉時スプルーブツシユ
８側から注入される合成樹脂により、ランナー１
１ａ及びスプルー１１ｂを一体に有した状態で成
形され、型開時、エジエクターピン６により型板
から突出されることによつて、各射出工程ごとに
個々に成形されている。 Thus, the molded product 11 is made of runner 1 by the synthetic resin injected from the sprue bush 8 side when the mold is closed.
1a and sprue 11b are integrally formed, and when the mold is opened, they are projected from the mold plate by ejector pins 6, so that they are molded individually for each injection process.

しかし、このような成形方法では難点のあるこ
と先に述べた通りである。 However, as mentioned above, such a molding method has some drawbacks.

そこで本発明では射出成形装置の金型部分を次
のように構成したので、その実施の一例を図に拠
り説明する。 Therefore, in the present invention, the mold portion of the injection molding apparatus is configured as follows, and an example of its implementation will be explained with reference to the drawings.

第３図は可動側取附板に設けた一対の回転金型
及び搬送機構の平面図、第４図は本発明装置にお
ける金型部の断面図で、第４図に於て、２１は固
定側取附板で両側下方に後述する回転金型の押え
板２１ａが突設してある。尚、この取附板２１に
おける８はスプルーブツシユ、９はロケートリン
グである。２２は可動側取附板で、その上面左右
方向に摺動案内部２２ａを形成して１組の金型摺
動部２３，２４を摺動可能に装着してある。 Fig. 3 is a plan view of a pair of rotary molds and a conveyance mechanism provided on the movable side mounting plate, Fig. 4 is a sectional view of the mold part in the device of the present invention, and in Fig. 4, 21 is a fixed Holding plates 21a for a rotary mold, which will be described later, are protruded from both sides of the side attachment plates. In addition, 8 on this attachment plate 21 is a sprue bush, and 9 is a locate ring. Reference numeral 22 designates a movable side mounting plate, on which a sliding guide portion 22a is formed in the left-right direction on its upper surface, and a pair of mold sliding portions 23 and 24 are slidably mounted thereon.

而して、上記摺動部２３，２４の外側は、上記
取附板２２の両外側に延設したシリンダー保持板
２５，２６の上面に設けたシリンダー２７，２８
のロツド２７ａ，２８ａに連結され、上記案内部
２２ａ上において近接、離反するように摺動され
る。 The outer sides of the sliding parts 23 and 24 are provided with cylinders 27 and 28 provided on the upper surfaces of cylinder holding plates 25 and 26 extending to both outer sides of the mounting plate 22, respectively.
The rods 27a and 28a are connected to each other and slid toward and away from each other on the guide portion 22a.

一方、上記摺動部２３，２４の上面には、モー
タ２９ａ，３０ａの出力によつて回転される回転
金型２９，３０が装設されている。 On the other hand, rotary molds 29 and 30, which are rotated by the output of motors 29a and 30a, are installed on the upper surfaces of the sliding parts 23 and 24.

回転金型２９，３０は、この実施例では短六角
柱状の部材で形成され、その外周の六面上に成形
品の６個のキヤビテイーＣの彫られたものが用い
られている。尚、各キヤビテイーＣには、スプル
ーブツシユに連なるランナー部Ｌのほか、成形品
を接続するための接続ランナー部JLが回転金型
２９，３０の周方向に形成してある。 In this embodiment, the rotary molds 29 and 30 are formed of short hexagonal columnar members, and six cavities C of the molded product are carved on six surfaces of the outer periphery of the rotary molds 29 and 30. In each cavity C, in addition to a runner part L continuous to the sprue bush, a connecting runner part JL for connecting molded products is formed in the circumferential direction of the rotary molds 29 and 30.

而して、上記回転金型２９，３０は、モータ２
９ａ，３０ａを駆動して、例えば、組立順次ｎ番
目の部品となる成形品を形成する一対のキヤビテ
イーＣを対向させ、シリンダー２７，２８を駆動
して該キヤビテイーＣの両面を突合せ、可動側取
附板２２を固定側取附板２１側に前進させて両回
転金型２９，３０の外側の面が金型押え板２１
ａ，２１ａに挾持されたとき型閉状態となる。 The rotary molds 29 and 30 are connected to the motor 2.
9a and 30a are driven to, for example, make a pair of cavities C that form a molded product that is the nth part in the assembly sequence face each other, and the cylinders 27 and 28 are driven to abut both sides of the cavities C, and the movable side handles are moved. The attachment plate 22 is moved forward toward the fixed side attachment plate 21 so that the outer surfaces of both rotating molds 29 and 30 are aligned with the mold holding plate 21.
The mold is in a closed state when it is held between a and 21a.

３１は第３図に示す可動側取附板２２に於て、
上記金型２９，３０が型閉されている際の接続ラ
ンナー部JLと同軸上に配設した成形品の搬送シ
リンダで、そのロツドの先端側は、成形時におけ
る成形品Ｍの後方の接続ランナーl2の後端側と一
体になるように搬送固定ピン３１ａを具備してい
る。尚、上記シリンダ３１の搬送固定ピン３１ａ
は、後退位置でその先端部が金型２９，３０にお
ける接続ランナー部JL内に残り、進出時、押出
した後方の接続ランナーl2の後端を次の型の接続
ランナー部JLの前端部内に残すように、その長
さ及びストローク量が設定されている。 31 is the movable side attachment plate 22 shown in FIG.
When the molds 29 and 30 are closed, the molded product conveyance cylinder is arranged coaxially with the connecting runner part JL, and the tip side of the rod is connected to the connecting runner at the rear of the molded product M during molding. A transport fixing pin 31a is provided so as to be integrated with the rear end side of l2 . Note that the conveyance fixing pin 31a of the cylinder 31
In the retracted position, its tip remains in the connecting runner part JL of the molds 29 and 30, and when advancing, the rear end of the extruded rear connecting runner l2 is inserted into the front end of the connecting runner part JL of the next mold. The length and stroke amount are set so that the

３２は上記搬送シリンダ３１と対向して配設し
た一対の星形ローラによる成形品送出装置で、該
装置３２は星形ローラの間欠的回転によりその切
欠部３２ａで成形品Ｍを逃げ、突出部３２ｂで成
形品Ｍと一体の接続ランナーｌを挾持し、接続ラ
ンナーを介して連続した成形品を間欠的に送り出
す。 Reference numeral 32 denotes a molded product delivery device using a pair of star-shaped rollers disposed opposite to the conveyance cylinder 31. This device 32 allows the molded product M to escape through its notch 32a by intermittent rotation of the star-shaped rollers, and to release the molded product M from the protruding portion. A connecting runner l integrated with the molded product M is held between 32b and continuous molded products are intermittently sent out via the connecting runner.

而して、上記のように構成された装置は、型閉
してスプルーブツシユ８側から成形材料を注入す
ると、閉じられた一対のキヤビテイＣによる製品
形状を有する成形品Ｍが成形されるが、型開時、
両回転金型２９，３０がそのシリンダー２７，２
８の作用で離反すると、その成形品Ｍにおけるス
プルーＳの前後に一体に成形された接続ランナー
l1，l2のうち、後方側のそれl2が搬送シリンダ３
１の搬送固定ピン３１ａに支持されているので、
その成形品Ｍは成形時の位置に残る（第５図参
照）。 In the apparatus configured as described above, when the mold is closed and the molding material is injected from the sprue bush 8 side, a molded article M having a product shape formed by the pair of closed cavities C is molded. , when opening the mold,
Both rotating molds 29 and 30 are connected to the cylinders 27 and 2.
When separated by the action of step 8, the connection runners integrally molded before and after the sprue S in the molded product M
Of l 1 and l 2 , the one on the rear side l 2 is the transport cylinder 3.
Since it is supported by the transport fixing pin 31a of No. 1,
The molded article M remains in the position at which it was molded (see FIG. 5).

ここで搬送シリンダ３１を進出駆動し前記成形
品Ｍを前方、即ち、星形ローラによる送出装置３
２側へ搬送する（第６図参照）と共に、回転金型
２９，３０をそのモータ２９ａ，３０ａを駆動
し、次の一対のキヤビテイーＣを対向させ、シリ
ンダ２７，２８を進出駆動して両金型２９，３０
を突合せてやれば、前工程の成形品Ｍの後部接続
ランナーl2の後端部は、次のキヤビテイーＣの接
続ランナー部JLの先端側に挾持されると共に、
搬送シリンダ３１の搬送固定ピン３１ａが次のキ
ヤビテイーＣの後方の接続ランナー部JL内に残
る。そこで、搬送シリンダ３１を後退駆動する
と、第５図に示すように搬送固定ピン３１ａは前
工程の後部接続ランナーl2から抜け、次のキヤビ
テイーＣにおける後方の接続ランナー部JLの後
端部に位置付けられる。 Here, the conveying cylinder 31 is driven to move forward, and the molded product M is moved forward, that is, to the feeding device 3 using star-shaped rollers.
At the same time, the motors 29a and 30a of the rotary molds 29 and 30 are driven to make the next pair of cavities C face each other, and the cylinders 27 and 28 are driven to move forward to separate both molds. Type 29, 30
By butting them together, the rear end of the rear connecting runner l2 of the molded product M in the previous process will be clamped to the tip side of the connecting runner part JL of the next cavity C, and
The transport fixing pin 31a of the transport cylinder 31 remains in the rear connecting runner portion JL of the next cavity C. Therefore, when the transport cylinder 31 is driven backward, the transport fixing pin 31a comes out of the rear connecting runner l2 of the previous process and is positioned at the rear end of the rear connecting runner part JL in the next cavity C, as shown in FIG. It will be done.

従つて、この状態で次の成形材料を注入する
と、そのキヤビテイーＣによる成形が行なわれる
と同時に、現工程による前後の接続ランナーl1，
l2は、それぞれ前工程の後部接続ランナーl2及び
搬送固定ピン３１ａと一体になるので、前工程の
成形品とランナー部分で接続された次工程の成形
品が成形され、このような工程を繰返すことによ
り異なる成形品が順次そのランナー同士が接続さ
れた状態で連続的に成形されることとなるのであ
る。尚、連続した成形品はその搬送前方の送出装
置３２の回転によつて次工程へ、成形品の成形工
程と同期して間欠的に送り出される。 Therefore, when the next molding material is injected in this state, molding is performed by the cavity C, and at the same time, the front and rear connection runners l 1 ,
Since l 2 is integrated with the rear connecting runner l 2 of the previous process and the transport fixing pin 31a, the molded product of the next process that is connected to the molded product of the previous process at the runner part is molded, and this process is completed. By repeating the process, different molded products are successively molded with their runners connected to each other. The continuous molded products are intermittently delivered to the next process in synchronization with the molding process of the molded products by the rotation of the delivery device 32 in front of the conveyance.

図面に於て、第７図、第８図は回転金型２９，
３０に彫られる型Ｃの他の実施例を示すもので、
第７図は接続ランナー部JL上に異種形状の型C1
〜C3を並べて配設した例、第８図は縦方向のラ
ンナーを介して異種形状の型C1〜C3を配設した
例で、いずれも一工程の成形で複数個の成形品を
形成することができるものである。 In the drawings, FIGS. 7 and 8 show the rotary mold 29,
This shows another example of type C carved in 30.
Figure 7 shows a mold C 1 with a different shape on the connecting runner part JL.
Figure 8 shows an example in which molds C1 to C3 of different shapes are arranged side by side through vertical runners, and in both cases multiple molded products can be produced in one molding process. It is something that can be formed.

（発明の効果） 本発明は以上の通りであつて、機器等に組込ま
れる異種形状の成形部品を、その組立順序に従つ
て接続ランナーで接続された状態で連続的に成形
し、この成形に同期して成形された部品を次工程
へ送り出すようにしたから、組立工程で成形部品
を連結されている順に組立てることができ、ま
た、成形部品の整列工程が不要となり、更に、パ
ーツフイーダや袋詰めの必要がないから、成形部
品に傷を付けないといつた諸効果が得られる。(Effects of the Invention) The present invention is as described above, and consists of continuously molding molded parts of different shapes to be incorporated into equipment, etc. while being connected by connection runners according to the order of assembly, and Since the molded parts are sent to the next process synchronously, the molded parts can be assembled in the order in which they are connected in the assembly process, and there is no need to align the molded parts. Since there is no need to do this, various effects can be obtained without damaging the molded parts.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来金型の型閉時の断面図、第２図は
同じく型開時の断面図、第３図は回転金型を用い
た本発明装置の一例の要部の平面図、第４図は同
じく断面図、第５図は成形完了時の型分割面の正
面図、第６図は型分割面における成形品の搬送状
態を示す正面図、第７図、第８図は１個の型面に
多数個取りの型を彫つた例の正面図である。 ２１……固定側取附板、２２……可動側取附
板、２２ａ……金型摺動案内部、２３，２４……
金型摺動部、２５，２６……シリンダー保持板、
２７，２８……シリンダー、２９，３０……一対
の回転金型、３１……搬送シリンダー、３１ａ…
…搬送固定ピン、３２……送出装置、Ｃ……型面
に彫られた成形品の型、JL……接続ランナー部、
Ｍ……成形品、ｌ，l1，l2……成形品の接続ラン
ナー。 FIG. 1 is a sectional view of a conventional mold when the mold is closed, FIG. 2 is a sectional view when the mold is opened, and FIG. Figure 4 is a cross-sectional view, Figure 5 is a front view of the mold dividing surface when molding is completed, Figure 6 is a front view showing the conveyance state of the molded product on the mold dividing surface, and Figures 7 and 8 are one piece. FIG. 3 is a front view of an example in which a multi-cavity mold is carved on the mold surface. 21... Fixed side attachment plate, 22... Movable side attachment plate, 22a... Mold sliding guide part, 23, 24...
Mold sliding part, 25, 26... cylinder holding plate,
27, 28... Cylinder, 29, 30... Pair of rotating molds, 31... Conveyance cylinder, 31a...
...transfer fixing pin, 32...delivery device, C...mold of the molded product carved on the mold surface, JL...connection runner section,
M...molded product, l, l1 , l2 ...connection runner for the molded product.

Claims (1)

【特許請求の範囲】 １ 機器等に順次組込まれる成形部品を機器等に
組込まれる順序にしたがい接続ランナーにより接
続された状態で順次射出成形することを特徴とす
る射出成形方法。 ２ 射出成形金型における可動側取附板と固定側
取附板、もしくは、サイドコア部に相対して回転
する一組の多角形状の金型を設け、その金型の外
周面に、機器等に順次組込まれる各成形部品と接
続ランナーとが一体成形されるキヤビテイーを形
成し、型開時前記回転金型を回転させて各成形品
がその接続ランナーにより接続された状態で連続
的に射出成形されるようにしたことを特徴とする
射出成形装置。[Scope of Claims] 1. An injection molding method characterized by sequentially injection molding molded parts to be sequentially assembled into equipment etc. while being connected by connection runners in the order in which they are assembled into equipment etc. 2. A movable side attachment plate and a fixed side attachment plate in an injection mold, or a set of polygonal molds that rotate relative to the side core part, are provided, and the outer circumferential surface of the mold is provided with a mounting plate for equipment, etc. Each of the molded parts and the connection runner that are sequentially assembled form a cavity that is integrally molded, and when the mold is opened, the rotary mold is rotated so that each molded product is continuously injection molded while being connected by the connection runner. An injection molding device characterized in that it is configured to
JP1146384A 1984-01-25 1984-01-25 Injection molding method and apparatus therefor Granted JPS60155421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1146384A JPS60155421A (en) 1984-01-25 1984-01-25 Injection molding method and apparatus therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1146384A JPS60155421A (en) 1984-01-25 1984-01-25 Injection molding method and apparatus therefor

Publications (2)

Publication Number Publication Date
JPS60155421A JPS60155421A (en) 1985-08-15
JPH04449B2 true JPH04449B2 (en) 1992-01-07

Family

ID=11778777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1146384A Granted JPS60155421A (en) 1984-01-25 1984-01-25 Injection molding method and apparatus therefor

Country Status (1)

Country Link
JP (1) JPS60155421A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2575173A2 (en) 2011-09-30 2013-04-03 Sony Corporation Imaging device, electronic apparatus, and manufacturing method
WO2013145706A1 (en) 2012-03-28 2013-10-03 Sony Corporation Display apparatus and display control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2575173A2 (en) 2011-09-30 2013-04-03 Sony Corporation Imaging device, electronic apparatus, and manufacturing method
WO2013145706A1 (en) 2012-03-28 2013-10-03 Sony Corporation Display apparatus and display control method

Also Published As

Publication number Publication date
JPS60155421A (en) 1985-08-15

Similar Documents

Publication Publication Date Title
JP3124904B2 (en) Method and apparatus for manufacturing plastic products
US5221538A (en) Rotational injection molding machine having a plurality of combinations of male and female dies
US5569476A (en) Injection molding machine having a rotatable turret
EP1047539B1 (en) Forming fastener products
JPS62214916A (en) Injection molding mold and molding method
JPS5953170B2 (en) Equipment for forming composite articles from two types of materials
JPS565747A (en) Decoration-molding method and apparatus for synthetic resin uneven surface and mold product
US3685784A (en) Injection mold wherein moveable cavity portions act to close the mold gates and further compress the mold material
GB2151971A (en) Two stage injection moulding of brushes
US3773450A (en) Arrangement at injection moulding machine for rendering possible multi-component moulding
JPH04449B2 (en)
CA1149118A (en) Plastic injection molding machine
JPS645807B2 (en)
JP3304832B2 (en) Multistage molding method and injection molding machine for hollow molded products
US2671933A (en) Method of molding rubber wheels
JP2001150496A (en) Method for taking out product from mold
JPS6241848B2 (en)
JPS59165632A (en) Method and apparatus for injecting and molding hollow article
GB1329554A (en) Method of and apparatus for injection moulding
JP2002225078A (en) Injection-molding method and die device for composite product with different material resins
JPH01295813A (en) Injection mold
JP3247005B2 (en) Injection mold
JP2999623B2 (en) Injection molding machine
JP3336239B2 (en) Multiple material injection molding method
DE4337490A1 (en) Prodn. of injection mouldings in shortened moulding cycles - by system which can be automated and in which one e.g. pair of mouldings is being cooled or cured while the next is moulded in readiness.