JP5030116B2 - Injection molding machine for composite molded article and molding method thereof - Google Patents
Injection molding machine for composite molded article and molding method thereof Download PDFInfo
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- JP5030116B2 JP5030116B2 JP2010101901A JP2010101901A JP5030116B2 JP 5030116 B2 JP5030116 B2 JP 5030116B2 JP 2010101901 A JP2010101901 A JP 2010101901A JP 2010101901 A JP2010101901 A JP 2010101901A JP 5030116 B2 JP5030116 B2 JP 5030116B2
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- mold
- composite molded
- ejector
- molded product
- movable
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- 239000002131 composite material Substances 0.000 title claims description 72
- 238000000465 moulding Methods 0.000 title claims description 48
- 238000001746 injection moulding Methods 0.000 title claims description 45
- 238000000034 method Methods 0.000 title claims description 11
- 238000002347 injection Methods 0.000 claims description 62
- 239000007924 injection Substances 0.000 claims description 62
- 239000011347 resin Substances 0.000 description 13
- 229920005989 resin Polymers 0.000 description 13
- 239000002184 metal Substances 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
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- 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
-
- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1615—The materials being injected at different moulding stations
- B29C45/1628—The materials being injected at different moulding stations using a mould carrier rotatable about an axis perpendicular to the opening and closing axis of the moulding stations
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- 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
- B29C45/10—Injection moulding apparatus using moulds or injection units usable in different arrangements or combinations 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
- B29C45/12—Injection moulding apparatus using two or more fixed moulds, e.g. in tandem
-
- 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
- B29C45/16—Making multilayered or multicoloured articles
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
本発明は、第１の金型が取付けられる第１の盤と第２の金型が取付けられる第２の盤との間に、型開閉方向と直交する方向の軸を中心に回転される中間金型が前記第１の金型および第２の金型と対応して設けられた複合成形品用射出成形機およびその成形方法に関するものである。 The present invention provides an intermediate between a first board to which a first mold is attached and a second board to which a second mold is attached, which is rotated about an axis perpendicular to the mold opening / closing direction. The present invention relates to an injection molding machine for a composite molded article in which a mold is provided corresponding to the first mold and the second mold, and a molding method thereof.
第１の金型が取付けられる第１の盤と第２の金型が取付けられる第２の盤との間に、型開閉方向と直交する方向の軸を中心に回転される中間金型が前記第１の金型および第２の金型と対応して設けられた複合成形品用射出成形機としては、特許文献１ないし特許文献３に記載されたものが知られている。そのうち特許文献１と特許文献２は、固定盤と中間金型を回転可能に設けた回転盤と可動盤が順に並べられ、前記回転盤と可動盤がそれぞれ型開閉方向に移動可能に設けられたものであり、特許文献３は、中央に中間金型を回転可能に設けた固定盤が配置され、その両側に型開閉方向に移動可能な可動盤が配置されたものである。また前記特許文献２は、射出装置の配置が相違しており、１本の射出装置が型開閉方向と直交する方向に取付けられている。 An intermediate mold rotated about an axis in a direction perpendicular to the mold opening / closing direction is provided between the first board to which the first mold is attached and the second board to which the second mold is attached. As an injection molding machine for a composite molded product provided corresponding to the first mold and the second mold, those described in Patent Documents 1 to 3 are known. Among them, in Patent Document 1 and Patent Document 2, a rotating plate and a movable plate in which a fixed plate and an intermediate mold are rotatably provided are arranged in order, and the rotary plate and the movable plate are provided to be movable in the mold opening / closing direction. In Patent Document 3, a fixed plate having an intermediate mold rotatably provided at the center is arranged, and a movable plate movable in the mold opening / closing direction is arranged on both sides thereof. Further, in Patent Document 2, the arrangement of the injection devices is different, and one injection device is attached in a direction orthogonal to the mold opening / closing direction.
上記の特許文献１ないし特許文献３のような複合成形用射出成形機では、複数の中間金型のうちの一方の中間金型が第１の金型と型合せされて形成されたキャビティに１次成形用の溶融樹脂の射出が行われる。そして次に１次成形品が張り付いた一方の中間金型を回転させ、今度は一方の中間金型を第２の金型とが型合せされ２次成形用の溶融樹脂の射出が行われ複合成形品の成形がなされる。その際に一方の中間金型および他方の中間金型は、第１の金型および第２の金型と交互に型合せされ、１次成形と２次成形を繰り返す。従って一方の中間金型と他方の中間金型は、それぞれ同じキャビティ形状をしている。また１次成形品が一方の中間金型側に張り付いた状態で中間金型を回転させる必要があるので、１次成形に使用される一方の金型よりも中間金型側のほうが離型しにくい構造となっている。そのため特許文献１に示されるように回転盤および中間金型側に成形品を突き出すエジェクタ装置が設けられることが一般的である。しかしながら回転盤および中間金型側にエジェクタ装置を設ける場合、中間金型毎にエジェクタ装置を設ける必要があり、回転盤および中間金型を合わせた部分の厚みが大きくなり、その結果一定の型開量を確保しようとすると、回転盤および中間盤を挟んだ両側の盤の間の型開時の間隔も大きくする必要がある。そのため複合成形用射出成形機の型締装置の全長が長くなるという問題があった。また回転盤にエジェクタ装置を組み込む場合は、中間金型への冷却媒体の配管とともにエジェクタ装置のアクチュエータへの配管や配線を設置する必要があり、回転盤に対してそのような配管を設置することは構造が複雑化するという問題があった。更には複合成形品の中間金型によって成形される側の面にエジェクタ跡が残るという問題があった。 In the injection molding machine for composite molding as described in Patent Document 1 to Patent Document 3, one of the plurality of intermediate molds is inserted into the cavity formed by combining with the first mold. Injection of molten resin for next molding is performed. Then, one of the intermediate molds to which the primary molded product is stuck is rotated, and this time, one of the intermediate molds is combined with the second mold, and the molten resin for secondary molding is injected. A composite molded product is molded. At that time, one intermediate mold and the other intermediate mold are alternately combined with the first mold and the second mold, and primary molding and secondary molding are repeated. Therefore, one intermediate mold and the other intermediate mold each have the same cavity shape. Also, since it is necessary to rotate the intermediate mold while the primary molded product is stuck to one of the intermediate molds, the mold on the intermediate mold side is released from the mold used for the primary molding. The structure is difficult to do. Therefore, as shown in Patent Document 1, it is common to provide an ejector device that projects a molded product on the rotating disk and the intermediate mold side. However, when an ejector device is provided on the turntable and intermediate mold side, it is necessary to provide an ejector device for each intermediate die, and the thickness of the combined portion of the turntable and the intermediate die increases, resulting in a constant mold opening. In order to secure the amount, it is necessary to increase the distance between the two sides of the platen between the rotary plate and the intermediate plate when the mold is opened. Therefore, there is a problem that the total length of the mold clamping device of the composite molding injection molding machine becomes long. In addition, when installing the ejector device on the turntable, it is necessary to install piping and wiring to the actuator of the ejector device together with the cooling medium piping to the intermediate mold, and install such piping on the turntable. Had the problem of complicated structure. Furthermore, there is a problem that an ejector mark remains on the surface of the composite molded product that is molded by the intermediate mold.
また特許文献２に示されるように射出装置のうちの少なくとも１本が型開閉方向と直角方向に設けられており、可動盤の背面側に射出装置等が配置されていない場合は、可動盤にエジェクタ装置を設けて可動金型側で２次成形された複合成形品を突出すことも行われている。しかし特許文献２の複合成形品用射出成形機については、射出装置が直角方向に設けられるので、工場のレイアウトの点から不利な点が多いという問題や、取付けられる金型の厚みの変更に応じて２次成形側の射出装置を横移動させる必要があるので、移動機構が必要となる上に金型交換のたびにノズルタッチ位置の微調整が必要になるという問題があった。 In addition, as shown in Patent Document 2, at least one of the injection devices is provided in a direction perpendicular to the mold opening / closing direction, and when the injection device or the like is not disposed on the back side of the movable plate, An ejector device is provided to project a composite molded product that is secondarily molded on the movable mold side. However, the injection molding machine for the composite molded article of Patent Document 2 is provided with an injection device in a right angle direction, so that there are many disadvantages in terms of factory layout and according to changes in the thickness of the mold to be attached. In addition, since it is necessary to move the injection device on the secondary molding side laterally, there is a problem that a moving mechanism is required and fine adjustment of the nozzle touch position is required every time the mold is replaced.
そこで本発明は、従来の第１の金型が取付けられる第１の盤と第２の金型が取付けられる第２の盤との間に、型開閉方向と直交する方向の軸を中心に回転される中間金型が前記第１の金型および第２の金型と対応して設けられた複合成形品用射出成形機において、工場レイアウト上有利な構造とするとともに型締装置の全長を短くすること、および中間金型または回転盤の構造を簡単にすること、および複合成形品における中間金型によって成形される面にエジェクタ跡を残さないことの少なくとも一つを可能とした複合成形品用射出成形機およびその成形方法を提供することを目的とする。 Therefore, the present invention rotates about an axis in a direction perpendicular to the mold opening / closing direction between the first panel on which the conventional first mold is mounted and the second panel on which the second mold is mounted. In an injection molding machine for a composite molded product in which an intermediate mold is provided corresponding to the first mold and the second mold, the structure is advantageous in terms of factory layout and the overall length of the mold clamping device is shortened. For composite molded products that can perform at least one of the following: simplifying the structure of the intermediate mold or turntable, and leaving no ejector marks on the surface formed by the intermediate mold in the composite molded product An object is to provide an injection molding machine and a molding method thereof.
本発明の請求項１に記載の複合成形品用射出成形機は、第１の金型が取付けられる第１の盤と第２の金型が取付けられる第２の盤との間に、型開閉方向と直交する方向の軸を中心に回転される中間金型が前記第１の金型および第２の金型と対応して設けられた複合成形品用射出成形機において、前記第１の盤または前記第２の盤の少なくとも一方の盤の中央には型開閉方向に沿って設けられた射出装置のノズルが挿入される凹部が形成され、前記凹部内または前記凹部の近傍には複合成形品を突き出すエジェクタが配設されたことを特徴とする。 According to a first aspect of the present invention, there is provided an injection molding machine for a composite molded product, wherein a mold is opened and closed between a first panel on which a first mold is mounted and a second panel on which a second mold is mounted. In the composite molding product injection molding machine, an intermediate mold rotated about an axis in a direction orthogonal to the direction is provided corresponding to the first mold and the second mold. Alternatively, a recess into which a nozzle of an injection device provided along the mold opening / closing direction is inserted is formed at the center of at least one of the second plates, and a composite molded product is formed in or near the recess. The ejector which protrudes is arrange | positioned .
本発明の請求項２に記載の複合成形品用射出成形機は、請求項１において、前記第１の盤と前記第２の盤の双方に型開閉方向と同方向に設けられた射出装置のノズルが挿入される凹部が形成され、前記凹部内または前記凹部の近傍にはそれぞれ複合成形品を突き出すエジェクタが配設されたことを特徴とする。 An injection molding machine for a composite molded article according to a second aspect of the present invention is the injection molding machine according to the first aspect, wherein the injection device is provided on both the first board and the second board in the same direction as the mold opening / closing direction. A concave portion into which the nozzle is inserted is formed, and an ejector for projecting the composite molded product is disposed in the concave portion or in the vicinity of the concave portion.
本発明の請求項３に記載の複合成形品用射出成形機の成形方法は、第１の金型が取付けられる第１の盤と第２の金型が取付けられる第２の盤との間に、型開閉方向と直交する方向の軸を中心に回転される中間金型が前記第１の金型および第２の金型と対応して設けられた複合成形品用射出成形機の成形方法において、前記第１の盤または前記第２の盤の少なくとも一方の盤の中央には型開閉方向に沿って設けられ２次成形時に使用される射出装置のノズルが挿入される凹部が形成され、前記凹部内または前記凹部の近傍には複合成形品を突き出すエジェクタが配設され、２次成形された複合成形品が前記エジェクタにより突出されることを特徴とする。 According to a third aspect of the present invention, there is provided a molding method for an injection molding machine for a composite molded article between a first board to which a first mold is attached and a second board to which a second mold is attached. In a molding method of an injection molding machine for a composite molded article, wherein an intermediate mold rotated around an axis in a direction orthogonal to the mold opening / closing direction is provided corresponding to the first mold and the second mold In the center of at least one of the first plate and the second plate, a recess is formed along the mold opening / closing direction and into which a nozzle of an injection device used during secondary molding is inserted, An ejector that projects a composite molded product is disposed in the recess or in the vicinity of the recess, and the composite molded product that has been secondarily formed is projected by the ejector .
本発明の請求項４に記載の複合成形品用射出成形機の成形方法は、請求項３において、前記第１の盤と前記第２の盤の双方に型開閉方向と同方向に設けられた射出装置のノズルが挿入される凹部が形成され、前記凹部内または前記凹部の近傍にはそれぞれ突出装置が配設され、取付けられる成形金型に応じて、２次成形時に使用される射出装置と複合成形品を突き出すエジェクタが変更されることを特徴とする。 According to a fourth aspect of the present invention, there is provided a molding method for an injection molding machine for a composite molded product according to the third aspect, wherein the first board and the second board are provided in the same direction as the mold opening / closing direction. A recess for inserting the nozzle of the injection device is formed, and a protruding device is disposed in or near the recess, respectively, and an injection device used at the time of secondary molding according to a molding die to be attached, The ejector for projecting the composite molded product is changed.
本発明の複合成形品用射出成形機は、第１の金型が取付けられる第１の盤と第２の金型が取付けられる第２の盤との間に、型開閉方向と直交する方向の軸を中心に回転される中間金型が前記第１の金型および第２の金型と対応して設けられた複合成形品用射出成形機において、前記第１の盤または前記第２の盤の少なくとも一方の盤の中央には射出装置のノズルが型開閉方向に挿入される凹部が形成され、前記凹部の周囲には複合成形品を突き出すエジェクタが配設されるので、工場レイアウト上有利な構造とするとともに型締装置の全長を短くすること、および中間盤の構造を簡単にすること、および複合成形品における中間金型によって成形される面にエジェクタ跡を残さないことの少なくとも一つが可能となる。 The injection molding machine for a composite molded product according to the present invention is provided in a direction orthogonal to the mold opening / closing direction between the first board to which the first mold is attached and the second board to which the second mold is attached. In the injection molding machine for a composite molded article, wherein an intermediate mold rotated around an axis is provided corresponding to the first mold and the second mold, the first board or the second board A recess for inserting the nozzle of the injection device in the mold opening / closing direction is formed in the center of at least one of the panels, and an ejector for projecting the composite molded product is disposed around the recess, which is advantageous in terms of factory layout. It is possible to reduce the overall length of the mold clamping device, simplify the structure of the intermediate plate, and at least one of leaving no ejector marks on the surface formed by the intermediate mold in the composite molded product. It becomes.
本発明の実施形態の複合成形品用射出成形機１１について、図１ないし図３を参照して説明する。複合成形品用射出成形機１１は、複数の樹脂材料により複合成形品を成形する射出成形機であって、型締装置１２とその両側に型開閉方向と同方向に設けられた第１の射出装置１３と第２の射出装置１４から基本的な部分が構成される。複合成形品用射出成形機１１の型締装置１２は、中央にベース１５に対して固定的またはモーメントフリーな状態に固定盤１６が配置されている。そして固定盤１６には型開閉方向と直交する方向の軸Ａを中心に回転軸１７と回転盤１８が回転自在に軸支され、サーボモータ１９により回転自在に設けられている。そして回転盤１８の両側の取付面には、同一のキャビティ形成面３３を有する中間金型２０が取付けられる。中間金型２０と回転盤１８内には温調水路が設けられるが、図１等の概略図では省略されている。本発明においては中間金型２０には複合成形品Ｐの突出装置であるエジェクタは設けられていない。従って中間金型２０の厚みを薄くすることができるとともに、エジェクタへの配管等が不必要となるので、回転盤１８やその軸支機構の構造を簡素化でき、中間金型２０によって成形される部分にエジェクタ跡が形成されない。 An injection molding machine 11 for a composite molded product according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. An injection molding machine 11 for a composite molded product is an injection molding machine that molds a composite molded product with a plurality of resin materials, and is a first injection provided on the mold clamping device 12 and both sides thereof in the same direction as the mold opening / closing direction. The device 13 and the second injection device 14 constitute a basic part. The mold clamping device 12 of the composite molded product injection molding machine 11 has a stationary platen 16 arranged in a fixed or moment-free state with respect to the base 15 at the center. A rotating shaft 17 and a rotating plate 18 are rotatably supported around an axis A in a direction orthogonal to the mold opening / closing direction on the fixed plate 16, and are rotatably provided by a servo motor 19. The intermediate mold 20 having the same cavity forming surface 33 is attached to the attachment surfaces on both sides of the turntable 18. Although a temperature control water channel is provided in the intermediate mold 20 and the turntable 18, it is omitted in the schematic view of FIG. In the present invention, the intermediate mold 20 is not provided with an ejector which is a protruding device for the composite molded product P. Accordingly, the thickness of the intermediate mold 20 can be reduced, and piping to the ejector is not necessary. Therefore, the structure of the rotary disk 18 and its pivot support mechanism can be simplified, and the intermediate mold 20 is molded. Ejector marks are not formed on the part.
そして前記固定盤１６および回転盤１８の両側には、第１の金型である第１の可動金型２１が取付けられる第１の盤である第１の可動盤２２と、第２の金型である第２の可動金型２３が取付けられる第２の盤である第２の可動盤２４がそれぞれべース１５上に摺動自在に設けられている。そして中間の固定盤１６と第１の可動盤２２の間には、サーボモータとボールネジを備えた第１の型開閉機構２５が取付けられ、中間の固定盤１６と第２の可動盤２４の間には、第２の型開閉機構２６が取付けられている。従って第１の可動盤２２に取付けられる第１の可動金型２１と、第２の可動盤２４に取付けられる第２の可動金型２３は、その間に設けられる回転盤１８に取付けられる中間金型２０，２０に対して、型開閉方向に移動可能となっている。そして図３に示されるように前記第１の可動金型２１と中間金型２０、第２の可動金型２３と中間金型２０とが型閉されてそれぞれ第１のキャビティＣ１と第２のキャビティＣ２が形成されるようになっている。 On both sides of the fixed plate 16 and the rotary plate 18, a first movable plate 22 as a first plate to which a first movable die 21 as a first die is attached, and a second die. A second movable plate 24 as a second plate to which the second movable mold 23 is attached is slidably provided on the base 15. A first mold opening / closing mechanism 25 having a servo motor and a ball screw is attached between the intermediate fixed plate 16 and the first movable plate 22, and between the intermediate fixed plate 16 and the second movable plate 24. Is attached with a second mold opening / closing mechanism 26. Accordingly, the first movable mold 21 attached to the first movable platen 22 and the second movable mold 23 attached to the second movable platen 24 are intermediate molds attached to the rotary plate 18 provided therebetween. 20, 20 can be moved in the mold opening and closing direction. As shown in FIG. 3, the first movable mold 21 and the intermediate mold 20, and the second movable mold 23 and the intermediate mold 20 are closed, and the first cavity C1 and the second mold 20 are respectively closed. A cavity C2 is formed.
第１の可動盤２２の四隅近傍にはそれぞれ型締シリンダ２７が設けられ、型締シリンダ２７のラムがタイバ２８を兼ねている。型締シリンダ２７は双方向作動型のシリンダであり、第１の可動盤２２内のタイバ２８の側に大面積の型締用油室が設けられるとともに、反中間金型側（第１の射出装置側）には小面積の強力型開用油室が設けられている。また型締シリンダ２７には毎サイクルの型締と強力型開によって変更されるタイバ２８の位置を、補正するための図示しない調整手段が設けられている。なお各型締シリンダ２７は、図示しないサーボバルブ等により個別に制御されるようにすることが望ましい。またタイバ２８は中間の固定盤１６の四隅近傍に摺動自在に挿通されるとともに、第２の可動盤２４の四隅近傍にも挿通される。そして第２の可動盤２４の反中間金型側の面のタイバ２８が挿通される部分の周囲にはタイバ２８に形成された溝状の係止部を係止するハーフナット２９が配置されている。なお型締シリンダ等の配置は、さまざまなバリエーションが考えられる。 Mold clamping cylinders 27 are provided in the vicinity of the four corners of the first movable platen 22, and the ram of the mold clamping cylinder 27 also serves as a tie bar 28. The mold clamping cylinder 27 is a bi-directionally operated cylinder. A large-area mold clamping oil chamber is provided on the tie bar 28 side in the first movable platen 22 and the anti-intermediate mold side (first injection) is provided. The device side) is provided with a powerful open oil chamber with a small area. The mold clamping cylinder 27 is provided with an adjusting means (not shown) for correcting the position of the tie bar 28 changed by mold clamping and strong mold opening every cycle. Each mold clamping cylinder 27 is desirably controlled individually by a servo valve (not shown) or the like. The tie bar 28 is slidably inserted in the vicinity of the four corners of the intermediate fixed platen 16 and is also inserted in the vicinity of the four corners of the second movable platen 24. A half nut 29 for locking a groove-shaped locking portion formed on the tie bar 28 is disposed around the portion of the second movable platen 24 on the side opposite to the intermediate mold where the tie bar 28 is inserted. Yes. There are various variations of the arrangement of the clamping cylinder and the like.
本実施形態では、型締装置１２の両側の第１の可動盤２２と第２の可動盤２４には、突出装置であるエジェクタ３０，３１がそれぞれ設けられている。一方の第１の可動盤２２について先に説明すると、第１の可動盤２２の反中間金型側の面の中央には前記の型開閉方向と同方向に配置される第１の射出装置１３のノズルが挿入されるすり鉢状の凹部３２が形成されている。そして凹部３２の中央には金型取付面に向けて貫通孔が形成されている。また前記凹部３２のうちの第１の射出装置１３の挿入に邪魔にならない部分にエジェクタ３０の駆動手段である油圧シリンダ３４が取付けられ、そのロッドが第１の可動金型２１内の部材であるエジェクタプレート３５の背面に当接されるようになっている。そしてエジェクタプレート３５にはエジェクタピン３６が取付けられ、エジェクタピン３６はキャビティ形成面３７から出没するようになっている。またエジェクタプレート３５とエジェクタピン３６は、金型内のバネにより後退可能となっている。なおエジェクタ３０は、第１の射出装置１３から放出される熱が油圧シリンダ３４等のアクチュエータに影響を与えない位置であって、ノズル先端から垂れた溶融樹脂がかからない位置に設けることが望ましい。そのためエジェクタ３０は、第１の射出装置１３が第１の可動金型２１にノズルタッチした際の側方（水平方向側方）となる位置に一定の間隔を隔てて設けられる。 In the present embodiment, the first movable plate 22 and the second movable plate 24 on both sides of the mold clamping device 12 are respectively provided with ejectors 30 and 31 that are protruding devices. The first movable platen 22 will be described first. The first injection device 13 is arranged at the center of the surface of the first movable platen 22 on the anti-intermediate mold side in the same direction as the mold opening / closing direction. A mortar-shaped recess 32 into which the nozzle is inserted is formed. A through hole is formed in the center of the recess 32 toward the mold mounting surface. Further, a hydraulic cylinder 34 as a driving means of the ejector 30 is attached to a portion of the concave portion 32 that does not interfere with the insertion of the first injection device 13, and the rod is a member in the first movable mold 21. The ejector plate 35 is brought into contact with the back surface. An ejector pin 36 is attached to the ejector plate 35, and the ejector pin 36 protrudes and emerges from the cavity forming surface 37. Further, the ejector plate 35 and the ejector pin 36 can be retracted by a spring in the mold. The ejector 30 is preferably provided at a position where the heat released from the first injection device 13 does not affect the actuator such as the hydraulic cylinder 34 and does not receive the molten resin dripping from the nozzle tip. Therefore, the ejector 30 is provided at a certain interval at a position that is the side (horizontal side) when the first injection device 13 nozzle-touches the first movable mold 21.
また第２の盤である可動盤２４についても同様に凹部３８内に突出装置であるエジェクタ３１が設けられる。具体的には油圧シリンダ３９のロッドが第２の可動金型２３のエジェクタプレート４０の背面に当接され、エジェクタピン４１がキャビティ形成面４２から出没されるようになっている。なお本実施形態では、エジェクタ３０，３１に駆動手段である油圧シリンダ３４、３９はそれぞれ２個づつ設けられているが、数は限定されず、電動モータとボールネジ機構を用いたものでもよい。またエジェクタは、金型内のみに配置されるものでもよい。 Similarly, an ejector 31 as a protruding device is provided in the recess 38 for the movable plate 24 as the second plate. Specifically, the rod of the hydraulic cylinder 39 is brought into contact with the back surface of the ejector plate 40 of the second movable mold 23 so that the ejector pins 41 are projected and retracted from the cavity forming surface 42. In this embodiment, the ejectors 30 and 31 are each provided with two hydraulic cylinders 34 and 39 as drive means, but the number is not limited, and an electric motor and a ball screw mechanism may be used. The ejector may be disposed only in the mold.
また射出装置については、第１の可動盤２２の外側には第１の射出装置１３が取付けられている。本実施形態では第１の射出装置１３は、複合成形品の第１の樹脂を射出するためのものであり、型開閉方向と同方向に長手方向を向けて配置されている。そして第１の射出装置１３は、第１の可動盤２２の型開閉移動とともに移動されるとともに、第１の可動盤２２に対しても進退可能となっている。また第２の可動盤２４の外側には第２の射出装置１４が取付けられている。本実施形態では第２の射出装置１４は、複合成形品の第２の樹脂を射出するためのものであり、型開閉方向と同方向に長手方向を向けて配置されている。そして第２の射出装置１４は、第２の可動盤２４の型開閉移動とともに移動されるとともに、第２の可動盤２４に対しても進退可能となっている。 As for the injection device, the first injection device 13 is attached to the outside of the first movable platen 22. In the present embodiment, the first injection device 13 is for injecting the first resin of the composite molded product, and is arranged with the longitudinal direction facing in the same direction as the mold opening / closing direction. The first injection device 13 is moved along with the mold opening / closing movement of the first movable platen 22 and can move forward and backward with respect to the first movable platen 22. A second injection device 14 is attached outside the second movable platen 24. In the present embodiment, the second injection device 14 is for injecting the second resin of the composite molded product, and is arranged with the longitudinal direction facing the same direction as the mold opening / closing direction. The second injection device 14 is moved along with the mold opening / closing movement of the second movable platen 24 and can be moved forward and backward with respect to the second movable platen 24.
そして第１の可動盤２２の貫通孔を介して、第１の射出装置１３のノズルが第１の可動金型２１に当接され、図示しない樹脂通路（コールドランナまたはホットランナ）を介してキャビティＣ１内に溶融樹脂が射出されるようになっている。また第２の可動金型２３および第２の可動盤２４についても同様に樹脂通路を介してキャビティＣ２内に溶融樹脂が射出されるようになっている。なお一般的には第１の可動金型２１には第１の射出装置１３のノズルが接続され、第２の可動金型２３には第２の射出装置１４のノズルが接続されるので、第１の可動金型２１のキャビティ形成面３７の側、第２の可動金型２３のキャビティ形成面４２の側にゲートが設けられることが多い。また図１等の概略図では、可動金型２１，２３に設けられる温調水路等については省略されている。 Then, the nozzle of the first injection device 13 is brought into contact with the first movable mold 21 through the through hole of the first movable platen 22 and is cavityd through a resin passage (cold runner or hot runner) (not shown). Molten resin is injected into C1. Similarly, for the second movable mold 23 and the second movable platen 24, the molten resin is injected into the cavity C2 through the resin passage. In general, the nozzle of the first injection device 13 is connected to the first movable mold 21, and the nozzle of the second injection device 14 is connected to the second movable mold 23. In many cases, a gate is provided on the cavity forming surface 37 side of the first movable mold 21 and on the cavity forming surface 42 side of the second movable mold 23. Further, in the schematic view of FIG. 1 and the like, the temperature control water channels provided in the movable molds 21 and 23 are omitted.
次に複合成形品用射出成形機１１の成形方法について図１ないし図３により説明する。図１に示される型締装置１２は、第１の型開閉装置２５、第２の型開閉装置２６が作動されて、固定盤１６と回転盤１８および中間金型２０，２０に対して、第１の可動金型２１が取付けられた第１の可動盤２２と、第２の可動金型２３が取付けられた第２の可動盤２４がそれぞれ型開されて型開完了位置に移動された状態を示している。そして次にエジェクタ３１の油圧シリンダ３９が作動されて、第２の可動金型２３のキャビティ形成面４２からエジェクタピン４１が突出されることにより、成形が完了した複合成形品Ｐが突出され、図示しない取出装置により取り出される。この複合成形品Ｐの突出しの際に、複合成形品Ｐの第２の可動金型２３側の成形面Ｐ３にはエジェクタ跡が残る場合が多い。しかし複合成形品Ｐの成形面Ｐ３の側には、上記したようにゲート跡が形成されていることが多いので、ゲート跡とエジェクタ跡を同じ側の成形面に形成することが可能である。よって複合成形品Ｐの成形面Ｐ３を成形品の裏面とすることによりゲート跡とエジェクタ跡を裏面にまとめることができる。 Next, the molding method of the composite molded product injection molding machine 11 will be described with reference to FIGS. In the mold clamping device 12 shown in FIG. 1, the first mold opening / closing device 25 and the second mold opening / closing device 26 are operated, so that the fixed plate 16, the rotating plate 18, and the intermediate molds 20, 20 are A state in which the first movable plate 22 to which one movable mold 21 is attached and the second movable plate 24 to which the second movable die 23 is attached are each opened and moved to a mold opening completion position. Is shown. Then, the hydraulic cylinder 39 of the ejector 31 is operated, and the ejector pin 41 protrudes from the cavity forming surface 42 of the second movable mold 23, whereby the composite molded product P that has been molded is protruded. Not taken out by take-out device. When the composite molded product P protrudes, an ejector mark often remains on the molding surface P3 of the composite molded product P on the second movable mold 23 side. However, since the gate trace is often formed on the molding surface P3 side of the composite molded product P as described above, the gate trace and the ejector trace can be formed on the same molding surface. Therefore, by setting the molding surface P3 of the composite molded product P as the back surface of the molded product, the gate trace and the ejector trace can be collected on the back surface.
また型開の際に第１の可動金型２１と中間金型２０の間に形成された第１のキャビティＣ１内で成形された１次成形品Ｐ１は、中間金型２０のキャビティ形成面３３に張り付いた状態で取り出される。なお中間金型２０に１次成形品が張り付いた状態で型開することがキャビティ形状等により制約を受ける場合等では、エジェクタ３０によりキャビティ形成面３７からの離型の補助をしてもよい。即ち中間金型２０に対して第１の可動金型２１が型開する際またはその直前から、型開速度に近い速度でエジェクタ３０を前進させる方向に力を働かせることにより、１次成形品Ｐ１を中間金型２０に張り付かせて離型することが容易になる。 Further, the primary molded product P1 molded in the first cavity C1 formed between the first movable mold 21 and the intermediate mold 20 when the mold is opened is the cavity forming surface 33 of the intermediate mold 20. It is taken out in a state of sticking to. In addition, when the mold opening with the primary molded product stuck on the intermediate mold 20 is restricted by the cavity shape or the like, the ejector 30 may assist the mold release from the cavity forming surface 37. . That is, when the first movable mold 21 is opened with respect to the intermediate mold 20 or immediately before, the primary molded product P1 is exerted by applying a force in the direction in which the ejector 30 is advanced at a speed close to the mold opening speed. Can be attached to the intermediate mold 20 and released easily.
そして複合成形品Ｐの取出しと１次成形品Ｐ１の離型が終わると、図２に示されるように、固定盤１６の上部の回転盤回転用のサーボモータ１９を駆動させ、回転盤１８と１次成形品が残留した中間金型２０と複合成形品Ｐが残留していない中間金型２０とを型開閉方向に直交する軸Ａを中心に１８０°回転（反転）させ、中間金型２０と1次成形品Ｐ１が第２の可動金型２３のキャビティ形成面４２と対応する位置へ移動させる。そして回転が終了すると、図示しないピンにより固定盤１６と回転盤１８が一旦固定される。なお中間金型２０，２０の回転は、一方方向へのみに回転させるものでもよく、反転させるものでもよい。 When the removal of the composite molded product P and the release of the primary molded product P1 are finished, as shown in FIG. 2, the servo motor 19 for rotating the rotating disk at the upper part of the fixed disk 16 is driven, The intermediate mold 20 in which the primary molded product remains and the intermediate mold 20 in which the composite molded product P does not remain are rotated (reversed) by 180 ° about the axis A orthogonal to the mold opening / closing direction. The primary molded product P1 is moved to a position corresponding to the cavity forming surface 42 of the second movable mold 23. When the rotation is completed, the fixed platen 16 and the rotary platen 18 are temporarily fixed by pins not shown. The intermediate molds 20 and 20 may be rotated only in one direction or reversed.
そして図３に示されるように、回転盤１８と中間金型２０が回転完了すると、第１の型開閉機構２５と第２の型開閉機構２６を作動させ、再び中間金型２０と第１の可動金型２１を対応させて型当接させるとともに、中間金型２０と第２の可動金型２３を対応させて型当接させる。この状態からハーフナット２９をタイバ２８の係止部に係止し、型締シリンダ２７を作動させて型締を行う。そして型締完了確認後に、第１の射出装置１３から第１の可動金型２１と中間金型２０の間に形成された１次キャビティＣ１に第１の射出装置１３から射出を行い１次成形品Ｐ１の成形を行う。なお本実施形態では１次成形品Ｐ１は、射出圧縮成形により成形が行われる。 Then, as shown in FIG. 3, when the turntable 18 and the intermediate mold 20 are completely rotated, the first mold opening / closing mechanism 25 and the second mold opening / closing mechanism 26 are operated, and the intermediate mold 20 and the first mold opening / closing mechanism 26 are operated again. The movable mold 21 is brought into contact with the corresponding mold, and the intermediate mold 20 and the second movable mold 23 are brought into contact with each other. From this state, the half nut 29 is locked to the locking portion of the tie bar 28, and the mold clamping cylinder 27 is operated to perform mold clamping. After confirming the completion of mold clamping, the first injection device 13 injects from the first injection device 13 into the primary cavity C1 formed between the first movable mold 21 and the intermediate mold 20 to perform primary molding. The product P1 is molded. In the present embodiment, the primary molded product P1 is molded by injection compression molding.
次に第２の可動金型２３と中間金型２０の間に形成された２次キャビティＣ２（２次キャビティＣ２の壁の一部は１次成形品Ｐ１によって形成される）に１次成形とは別のタイミングで、第２の射出装置１４から射出を行い２次成形部分Ｐ２の成形を行う。本実施形態では、１次成形品Ｐ１の周囲に２次成形部分Ｐ２の樹脂を貼り付ける２次成形は、一般的な射出成形によって行われる。そして冷却時間が終了すると、次に型開に移行し、再び図１の状態に戻る。 Next, primary molding is performed on the secondary cavity C2 formed between the second movable mold 23 and the intermediate mold 20 (part of the wall of the secondary cavity C2 is formed by the primary molded product P1). In another timing, injection is performed from the second injection device 14 to form the secondary molded portion P2. In the present embodiment, the secondary molding in which the resin of the secondary molded portion P2 is attached around the primary molded product P1 is performed by general injection molding. When the cooling time is over, the mold shifts to mold opening and returns to the state shown in FIG.
本実施形態の複合成形品用射出成形機１１の成形方法では、２次成形時に使用するノズルが挿入される凹部３８を有する第２の可動盤２４の突出装置（エジェクタ３１）を用いて複合成形品Ｐの突出しが行われる。例えば第１の射出装置１３と第２の射出装置１４の射出量等のスペックが相違する場合であって、型交換して別の複合成形品Ｐを成形する場合、第２の射出装置１４を用いて第２キャビティＣ２に射出して１次成形を行い、第１の射出装置１３を用いて第１キャビティＣ１に射出して２次成形を行いたい場合もある。そのような場合でも、双方の可動盤２２，２４（または可動金型）にエジェクタ３０，３１があるので、成形の自由度を高めることができる。 In the molding method of the composite molded product injection molding machine 11 of the present embodiment, the composite molding is performed using the protruding device (ejector 31) of the second movable platen 24 having the recess 38 into which the nozzle used in the secondary molding is inserted. The product P is projected. For example, when the specifications such as the injection amount of the first injection device 13 and the second injection device 14 are different and when another composite molded product P is formed by exchanging the mold, the second injection device 14 is In some cases, it is desired to perform injection molding into the second cavity C2 to perform primary molding, and to use the first injection device 13 to perform injection molding into the first cavity C1 to perform secondary molding. Even in such a case, since the ejectors 30 and 31 are provided on both movable plates 22 and 24 (or movable molds), the degree of freedom in molding can be increased.
次に図４および図５に示される別の実施形態のエジェクタ５１が取付けられた複合成形用射出成形機５２について説明する。なお図５は、図４におけるＢ−Ｂ線の断面図である。複合成形用射出成形機５２は、図１等に示される複合成形用射出成形機１１と同様に、固定盤および回転盤の両側に可動盤５３等が配置されている。可動盤５３は、四隅近傍にタイバ６７が挿通され、反中間金型側の面の中央には図示しない射出装置のノズルが挿入されるすり鉢状の凹部５４が形成されている。（Ｂ−Ｂ線で表される図５では凹部５４は、表れないので破線で示す。）そして前記凹部５４の中央底面には可動金型５５の取付面へ貫通する貫通孔が形成されている。また可動盤５３は、凹部５４の周囲の近傍部分が厚肉部５６となっており、厚肉部５６から外側に向けて放射状にリブ５７が形成されている。またリブ５７とリブ５７の間は、空洞部５９となっており、空洞部５９の反中間金型側は薄肉部５８で覆われている。そして本実施形態では、図４に示されるように薄肉部５８に貫通孔が形成され、空洞部５９にエジェクタ５１の油圧シリンダ６０がそれぞれ収められている。そして２本の油圧シリンダ６０のロッドの間には可動盤５３の反中間金型側の面に沿って連結板６１が設けられている。連結板６１には孔が設けられ、可動盤５３に固定されたガイド６２に挿通されている。また連結板６１には、可動金型５５に向けて２本のロッド６３が固定されている。ロッド６３は、可動盤５３の厚肉部５６の部分に型開閉方向に設けられた貫通孔に挿通されて可動金型５５内のエジェクタプレート６４の背面に当接されている。そしてエジェクタプレート６４は、キャビティ形成面６５に向けてエジェクタロッド６６が複数本取付けられている。 Next, an injection molding machine 52 for composite molding to which the ejector 51 of another embodiment shown in FIGS. 4 and 5 is attached will be described. 5 is a cross-sectional view taken along line BB in FIG. In the composite molding injection molding machine 52, as with the composite molding injection molding machine 11 shown in FIG. 1 and the like, movable plates 53 and the like are arranged on both sides of the fixed platen and the rotary platen. In the movable platen 53, tie bars 67 are inserted in the vicinity of the four corners, and a mortar-shaped recess 54 into which a nozzle of an injection device (not shown) is inserted is formed in the center of the surface on the anti-intermediate mold side. (In FIG. 5 represented by the line BB, the concave portion 54 does not appear and is indicated by a broken line.) And a through-hole penetrating to the mounting surface of the movable mold 55 is formed in the central bottom surface of the concave portion 54. . The movable plate 53 has a thick portion 56 in the vicinity of the periphery of the recess 54, and ribs 57 are formed radially from the thick portion 56 to the outside. A space 59 is formed between the rib 57 and the rib 57, and the anti-intermediate mold side of the cavity 59 is covered with a thin portion 58. In the present embodiment, as shown in FIG. 4, a through hole is formed in the thin portion 58, and the hydraulic cylinder 60 of the ejector 51 is housed in the cavity portion 59. A connecting plate 61 is provided between the rods of the two hydraulic cylinders 60 along the surface of the movable plate 53 on the side opposite to the intermediate mold. The connecting plate 61 is provided with a hole, and is inserted through a guide 62 fixed to the movable platen 53. Further, two rods 63 are fixed to the connecting plate 61 toward the movable mold 55. The rod 63 is inserted into a through hole provided in the mold opening / closing direction in the thick portion 56 of the movable plate 53 and is in contact with the back surface of the ejector plate 64 in the movable mold 55. A plurality of ejector rods 66 are attached to the ejector plate 64 toward the cavity forming surface 65.
なお別の実施形態においてエジェクタ５１は、可動盤５３の凹部５４の両側であって、図示しない射出装置のノズルや加熱筒が凹部５４に挿通される際に邪魔にならない位置にそれぞれ取付けられている。そしてエジェクタ５１を作動させる際は、油圧シリンダ６０のロッドを退縮させる方向に移動させて連結板６１、ロッド６３、およびエジェクタロッド６６等を前進させる。エジェクタロッド６６の後退については、ロッド６３とエジェクタプレート６４を連結して、油圧シリンダ６０の作動により後退させてもよく、可動金型５５内のバネにより後退させるようにしてもよい。またエジェクタ５１の駆動手段については、サーボモータ等の電動機を用いたものでもよい。そして別の実施形態についても、２次成形が行われる側の一方の盤のみにエジェクタ５１を設けてもよいが、両側の射出装置が外側にある盤にエジェクタ５１を設けることが、成形の自由度を向上させる上で望ましい。 In yet another embodiment, the ejector 51 is attached to both sides of the recess 54 of the movable platen 53 at a position where it does not get in the way when a nozzle or a heating cylinder (not shown) is inserted into the recess 54. . When the ejector 51 is operated, the connecting plate 61, the rod 63, the ejector rod 66, and the like are moved forward by moving the rod of the hydraulic cylinder 60 in the retracting direction. Regarding the retreat of the ejector rod 66, the rod 63 and the ejector plate 64 may be connected to be retreated by the operation of the hydraulic cylinder 60, or may be retreated by the spring in the movable mold 55. Further, the drive means of the ejector 51 may be one using an electric motor such as a servo motor. In another embodiment, the ejector 51 may be provided only on one of the panels on the side where the secondary molding is performed. However, it is possible to provide the ejector 51 on the panel where the injection devices on both sides are outside. It is desirable to improve the degree.
次に更に別の実施形態の複合成形品用射出成形機に、本発明のエジェクタ等の突出装置を設ける例について説明する。更に別の実施形態の複合成形用射出成形機は、特許文献２に似たタイプであって、第１の金型である固定金型が取付けられる第１の盤である固定盤と、第２の金型である可動金型が取付けられる第２の盤である可動盤との間に、中間盤がタイバに挿通されて型開閉方向に移動自在に設けられている。そして中間盤には型開閉方向に直交する方向の軸を中心に回転される回転軸と回転盤が取付けられ、回転盤の両側の金型取付面には、それぞれ中間金型が前記第１の金型および第２の金型と対応するように取付けられている。 Next, an example in which a projection device such as an ejector of the present invention is provided in an injection molding machine for a composite molded product of still another embodiment will be described. Still another embodiment of the injection molding machine for composite molding is a type similar to Patent Document 2, and is a fixed platen that is a first plate to which a fixed die that is a first die is attached, and a second platen. An intermediate board is inserted into the tie bar and is movable in the mold opening / closing direction between the movable board as the second board to which the movable mold as the mold is attached. A rotating shaft and a rotating disk that are rotated about an axis orthogonal to the mold opening / closing direction are attached to the intermediate disk, and the intermediate metal molds are respectively attached to the mold mounting surfaces on both sides of the rotating disk. It is attached so as to correspond to the mold and the second mold.
更に別の実施形態の複合成形用射出成形機では、固定盤の外側には型開閉方向と同方向に第１の射出装置が設けられ、固定盤の反中間金型側の面の中央には前記射出装置のノズルが挿入される凹部が形成されている。また可動盤の外側にも型開閉方向と同方向に第２の射出装置が設けられ、固定盤の反中間金型側の面の中央には前記射出装置のノズルが挿入される凹部が形成されている。そして少なくとも一方の盤の前記凹部内または凹部の近傍には突出装置であるエジェクタが配置されている。なおエジェクタは、固定盤と可動盤の双方に設けるほうがより望ましい。 In yet another embodiment of the injection molding machine for composite molding, the first injection device is provided outside the fixed plate in the same direction as the mold opening / closing direction, and at the center of the surface of the fixed plate on the anti-intermediate mold side. A recess into which the nozzle of the injection device is inserted is formed. A second injection device is also provided on the outside of the movable plate in the same direction as the mold opening / closing direction, and a recess for inserting the nozzle of the injection device is formed at the center of the surface of the fixed plate on the side opposite to the intermediate mold. ing. An ejector that is a protruding device is disposed in or near the recess of at least one of the boards. It is more desirable to provide the ejector on both the fixed platen and the movable platen.
更に別の実施形態では、固定盤（固定金型を含む）に対して、中間盤（回転盤や中間金型を含む）と可動盤（可動金型を含む）と第２の射出装置がそれぞれ移動自在となっている。更に別の実施形態の場合、固定盤側の第１の射出装置は、型開閉に応じて大きく移動させる必要がないので、大きい射出装置を設けることができるが、第２の射出装置は、移動させるので小さい射出装置とする場合もある。その場合、固定盤と可動盤の両方にエジェクタがあると、固定盤側の大きい第１の射出装置から射出された溶融樹脂で成形される部分を１次成形品とすることも２次成形部分とすることもどちらも可能となり、成形の自由度が増す。 In still another embodiment, an intermediate plate (including a rotating plate and an intermediate die), a movable plate (including a movable die), and a second injection device are respectively provided for the fixed plate (including a fixed die). It is free to move. In the case of still another embodiment, the first injection device on the fixed platen side does not need to be moved greatly according to the mold opening / closing, so a large injection device can be provided, but the second injection device is moved Therefore, a small injection device may be used. In that case, if there are ejectors on both the fixed platen and the movable platen, the part molded with the molten resin injected from the large first injection device on the fixed platen side may be used as the primary molded part. Both are possible, and the degree of freedom of molding increases.
上記の各実施形態の複合成形品用射出成形機に取付けられる中間金型については、型締装置の側に回転盤がなくて、両側に中間金型の部分を有する１個の中間ブロックが回転軸上に着脱自在に取付けられるものでもよい。また中間金型の個数は２個に限定されず４個、６個等の偶数個数であってもよい。例えば中間金型の個数が４個の場合、従来の中間金型にエジェクタ等を設ける場合は、それぞれに必要であったが、本発明では、両側の盤の少なくとも一方にエジェクタ等を設ければすむ。 For the intermediate mold attached to the injection molding machine for composite molded products of each of the above embodiments, there is no rotating disc on the mold clamping device side, and one intermediate block having intermediate mold portions on both sides rotates. It may be detachably mounted on the shaft. The number of intermediate molds is not limited to two, and may be an even number such as four or six. For example, when the number of intermediate molds is four, it is necessary for each of the conventional intermediate molds to be provided with an ejector or the like. However, in the present invention, if an ejector or the like is provided on at least one of the panels on both sides, I'm sorry.
上記では本発明の各実施形態の複合成形品用射出成形機に設けられる突出装置は、エジェクタに使用する例について説明したが、他の部分を型開閉方向に移動させて突出動作を行うものであればエジェクタに限定されない。具体的には突出装置は、キャビティと樹脂通路の間のゲートを切断するゲートカッタを突出すための駆動装置であってもよい。その場合、１次成形品はゲートカットした状態で、２次成形側へ回すことが望ましいので、１次成形側の突出装置をゲートカッタの突出のために使用し、２次成形側の突出装置をエジェクタによる複合成形品の突出のために使用してもよい。また突出装置は、ホットランナを開閉するバルブゲートを突出すための駆動装置に使用したものでもよい。 In the above description, the protrusion device provided in the injection molding machine for a composite molded product according to each embodiment of the present invention has been described with respect to the example of use in an ejector. If there is, it is not limited to an ejector. Specifically, the protruding device may be a driving device for protruding a gate cutter that cuts the gate between the cavity and the resin passage. In that case, it is desirable to turn the primary molded product to the secondary molding side with the gate cut, so that the primary molding side projection device is used to project the gate cutter, and the secondary molding side projection device is used. May be used for projecting the composite molded article by the ejector. Further, the protruding device may be one used for a driving device for protruding a valve gate that opens and closes the hot runner.
１１ 複合成形品用射出成形機
１２ 型締装置
１３ 第１の射出装置
１４ 第２の射出装置
１６ 固定盤
１８ 回転盤
２０ 中間金型
２１ 第１可動金型
２３ 第２可動金型
２２ 第１可動盤
２４ 第２可動盤
２７ 型締シリンダ
３０，３１，５１ エジェクタ
３２，３８，５４ 凹部
３６，４１ エジェクタピン
Ａ 型開閉方向に直交する方向の軸
Ｃ１ 第１のキャビティ
Ｃ２ 第２のキャビティ
Ｐ 複合成形品
Ｐ１ 一次成形品
Ｐ２ 二次成形部分
Ｐ３ 成形面
DESCRIPTION OF SYMBOLS 11 Injection molding machine for composite molded products 12 Clamping device 13 1st injection device 14 2nd injection device 16 Fixed platen 18 Rotating plate 20 Intermediate mold 21 1st movable mold 23 2nd movable mold 22 1st movable Panel 24 Second movable panel 27 Clamping cylinder 30, 31, 51 Ejector
32, 38, 54 Recess 36, 41 Ejector pin A Axis perpendicular to mold opening / closing direction C1 First cavity C2 Second cavity P Composite molded product P1 Primary molded product P2 Secondary molded part P3 Molded surface
Claims (4)
前記第１の盤または前記第２の盤の少なくとも一方の盤の中央には型開閉方向に沿って設けられた射出装置のノズルが挿入される凹部が形成され、
前記凹部内または前記凹部の近傍には複合成形品を突き出すエジェクタが配設されたことを特徴とする複合成形品用射出成形機。 An intermediate mold rotated about an axis in a direction perpendicular to the mold opening / closing direction is provided between the first board to which the first mold is attached and the second board to which the second mold is attached. In an injection molding machine for a composite molded article provided corresponding to the first mold and the second mold,
At the center of at least one of the first board and the second board, a recess into which a nozzle of an injection device provided along the mold opening / closing direction is inserted is formed,
An injection molding machine for composite molded products, wherein an ejector for projecting a composite molded product is disposed in the recess or in the vicinity of the recess.
前記凹部内または前記凹部の近傍にはそれぞれ複合成形品を突き出すエジェクタが配設されたことを特徴とする請求項１に記載の複合成形品用射出成形機。 A recess into which a nozzle of an injection device provided in the same direction as the mold opening / closing direction is inserted in both the first board and the second board,
The injection molding machine for a composite molded product according to claim 1, wherein an ejector for projecting the composite molded product is disposed in the recess or in the vicinity of the recess.
前記第１の盤または前記第２の盤のいずれか一方の盤の中央には型開閉方向に沿って設けられ２次成形時に使用される射出装置のノズルが挿入される凹部が形成され、
前記凹部内または前記凹部の近傍には複合成形品を突き出すエジェクタが配設され、
２次成形された複合成形品が前記エジェクタにより突出されることを特徴とする複合成形品用射出成形機の成形方法。 An intermediate mold rotated about an axis in a direction perpendicular to the mold opening / closing direction is provided between the first board to which the first mold is attached and the second board to which the second mold is attached. In the molding method of the injection molding machine for a composite molded article provided corresponding to the first mold and the second mold,
A concave portion is formed in the center of either the first plate or the second plate and is inserted along the mold opening / closing direction and into which a nozzle of an injection device used during secondary molding is inserted,
In the recess or in the vicinity of the recess is disposed an ejector that projects a composite molded product ,
A molding method for an injection molding machine for a composite molded product , wherein a secondary molded composite molded product is projected by the ejector .
前記凹部内または前記凹部の近傍にはそれぞれ複合成形品を突き出すエジェクタが配設され、
取付けられる成形金型に応じて、２次成形時に使用される射出装置と複合成形品を突き出すエジェクタが変更されることを特徴とする請求項３に記載の複合成形品用射出成形機の成形方法。 A recess into which a nozzle of an injection device provided in the same direction as the mold opening / closing direction is inserted in both the first board and the second board,
In each of the recesses or in the vicinity of the recesses, an ejector that projects a composite molded product is disposed,
4. The molding method for an injection molding machine for a composite molded product according to claim 3, wherein an injection device used at the time of secondary molding and an ejector for ejecting the composite molded product are changed according to a molding die to be attached. .
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| JP2010101901A JP5030116B2 (en) | 2010-04-27 | 2010-04-27 | Injection molding machine for composite molded article and molding method thereof |
| KR1020110038184A KR101342889B1 (en) | 2010-04-27 | 2011-04-25 | Injection molding machine for composite molded article and molding method thereof |
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| JP2010101901A JP5030116B2 (en) | 2010-04-27 | 2010-04-27 | Injection molding machine for composite molded article and molding method thereof |
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| JP5855539B2 (en) * | 2012-07-02 | 2016-02-09 | 小島プレス工業株式会社 | Two-color molded product manufacturing apparatus and manufacturing method |
| WO2018016323A1 (en) * | 2016-07-19 | 2018-01-25 | 株式会社小糸製作所 | Molding apparatus |
| CN106514960A (en) * | 2016-12-09 | 2017-03-22 | 罗数基础（天津）机器人技术有限公司 | Injection molding machine |
| CN112262032A (en) * | 2018-06-06 | 2021-01-22 | 尼根机械有限公司 | Platen apparatus for center section of stack mold injection molding machine |
| CN110315695A (en) * | 2019-06-18 | 2019-10-11 | 重庆敏特汽车零部件有限公司 | A kind of automobile stand column outer plaque injection mold and injection moulding process |
| CN115319999A (en) * | 2022-10-14 | 2022-11-11 | 赫比(成都)精密塑胶制品有限公司 | Cubic injection mold and injection molding method |
| CN116834210B (en) * | 2023-08-31 | 2023-11-28 | 赫比(成都)精密塑胶制品有限公司 | Composite angle ejection double-color die and injection molding machine |
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| JPS5351258A (en) * | 1976-10-20 | 1978-05-10 | Japan Steel Works Ltd | Automatic rotary disk centering unit for opposed injection molding machine |
| JPS5912810A (en) * | 1982-07-14 | 1984-01-23 | Furuya Kogyo Kk | Manufacture of thin plate decorated with cubic ornament such as coat of arms, seal and the like |
| JPS6260618A (en) * | 1985-09-11 | 1987-03-17 | Japan Steel Works Ltd:The | Injection laminating molding device |
| US4981638A (en) * | 1988-01-29 | 1991-01-01 | Husky Injection Molding Systems Ltd. | Method and apparatus for clamping an injection unit to a molding machine |
| JPH0282512U (en) * | 1988-12-16 | 1990-06-26 | ||
| JP2612795B2 (en) * | 1992-06-15 | 1997-05-21 | 世紀株式会社 | Runnerless injection molding equipment |
| JPH06254906A (en) * | 1993-03-09 | 1994-09-13 | Mitsubishi Heavy Ind Ltd | Multi-material quality injection molding machine |
| JP3454464B2 (en) * | 1998-07-02 | 2003-10-06 | ムネカタ株式会社 | Valve gate type hot nozzle device |
| JP2003071881A (en) * | 2001-09-06 | 2003-03-12 | Bridgestone Corp | Mold for injection molding |
| JP2004066728A (en) * | 2002-08-08 | 2004-03-04 | Matsushita Electric Ind Co Ltd | Stack-molding mold |
| DE102006016200A1 (en) * | 2006-04-06 | 2007-10-11 | Krauss-Maffei Kunststofftechnik Gmbh | Method and device for producing multi-component plastic molded parts |
| JP4942088B2 (en) | 2006-09-28 | 2012-05-30 | 三菱重工プラスチックテクノロジー株式会社 | Two-material injection molding machine and control method |
| JP4781324B2 (en) * | 2007-07-20 | 2011-09-28 | 三菱重工プラスチックテクノロジー株式会社 | Two-material injection molding machine |
| CN101888921B (en) | 2008-03-25 | 2013-06-19 | 三菱重工塑胶科技股份有限公司 | Injection molding machine for bimaterial molding and method of controlling same |
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