JP2023138210A - Resin molding mold - Google Patents
Resin molding mold Download PDFInfo
- Publication number
- JP2023138210A JP2023138210A JP2022063143A JP2022063143A JP2023138210A JP 2023138210 A JP2023138210 A JP 2023138210A JP 2022063143 A JP2022063143 A JP 2022063143A JP 2022063143 A JP2022063143 A JP 2022063143A JP 2023138210 A JP2023138210 A JP 2023138210A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- core
- molded product
- mold
- cavity
- 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.)
- Pending
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 167
- 239000011347 resin Substances 0.000 title claims abstract description 167
- 238000000465 moulding Methods 0.000 title claims abstract description 79
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000007769 metal material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 229920005992 thermoplastic resin Polymers 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229920000106 Liquid crystal polymer Polymers 0.000 description 2
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229920001955 polyphenylene ether Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
Abstract
Description
本発明は、二色成形に用いる樹脂成形用金型に関する。 The present invention relates to a resin molding die used for two-color molding.
特許文献１は、黒色の合成樹脂を金型内にて射出成形して作られた１次成形品を不図示の金型内に納め、灰色の合成樹脂からなる２次成形材料を射出成形する二色成形法において、１次成形品に内奥部が出口部より広げた溝を設けて１次成形品と２次成形品とを剥離しにくく強固に結合させることが記載されており、内奥部が出口部より広げた溝の形状は第４図～第１１図に記載されている。 In Patent Document 1, a primary molded product made by injection molding a black synthetic resin in a mold is placed in a mold (not shown), and a secondary molding material made of a gray synthetic resin is injection molded. In the two-color molding method, it is stated that the primary molded product is provided with a groove whose inner part is wider than the outlet part to firmly connect the primary molded product and the secondary molded product so that they are difficult to separate. The shape of the groove in which the inner part is wider than the outlet part is shown in FIGS. 4 to 11.
しかし、この特許文献１においては、１次成形品を不図示の金型で成形するとしても、１次成形品（本願の樹脂成形品）に内奥部が出口部より広げた溝（本願の凹所）が形成されるように成形する金型を簡単に製造して、その金型から成形された樹脂成形品を二色成形に用いて樹脂の結合性を高めることが望まれる。 However, in Patent Document 1, even if the primary molded product is molded using a mold (not shown), the primary molded product (resin molded product of the present application) has a groove in which the innermost part is wider than the outlet part (the resin molded product of the present application). It is desirable to easily manufacture a mold for molding such that a recess is formed, and to use the resin molded product molded from the mold for two-color molding to improve the bonding properties of the resin.
本発明は、二色成形に用いて樹脂層との結合性を高める樹脂成形用金型を提供することを目的とする。 An object of the present invention is to provide a resin molding mold that is used for two-color molding and improves bonding properties with a resin layer.
本発明の請求項１に記載の樹脂成形用金型は、樹脂成形用金型のコアとキャビティの少なくとも一方の表面に先端の断面積が大きな突起部材を形成したことを特徴とする。 The resin molding mold according to claim 1 of the present invention is characterized in that a protruding member having a large cross-sectional area at the tip is formed on at least one surface of the core and the cavity of the resin molding mold.
本発明は、樹脂成形用金型のコアとキャビティの少なくとも一方の表面に先端の断面積が大きな突起部材を形成した樹脂成形用金型であるので、その樹脂成形用金型で成形された樹脂成形品を１次成形品とし、２次成形用樹脂を樹脂層として積層する二色成形に用いて樹脂成形品と樹脂層との結合性を高めることができる。 The present invention is a resin molding mold in which a protrusion member having a large cross-sectional area at the tip is formed on at least one surface of the core and cavity of the resin molding mold. It can be used in two-color molding in which a molded product is used as a primary molded product and a resin for secondary molding is laminated as a resin layer to improve the bonding properties between the resin molded product and the resin layer.
（樹脂成形用金型）
図１は、本発明の突起部材が形成された樹脂成形用金型を示す。(Mold for resin molding)
FIG. 1 shows a resin molding die in which a protruding member of the present invention is formed.
図１において、１は樹脂成形用金型であり、コア１Ａとキャビティ１Ｂとを有する。コア１Ａとキャビティ１Ｂとは、何れも金属材でできており、コア１Ａの表面には先端の断面積が大きな突起部材１１が複数個形成されており、キャビティ１Ｂにはノズル孔１２が形成されている。コア１Ａは図示しないが金型開閉駆動装置により上下に可動される可動型で、キャビティ１Ｂは可動せずに固定された固定型であり、コア１Ａとキャビティ１Ｂとは閉じられて、樹脂成形用金型１が閉じられた状態となって、空間部１Ｃが形成されている。この空間部１Ｃにノズル孔１２から樹脂成形品用樹脂（本願においては熱可塑性樹脂を例示）が射出して充填される。また、コア１Ａとキャビティ１Ｂとは閉じられることにより、空間部１Ｃには、コア１Ａの表面に形成された突起部材１１の先端はキャビティ１Ｂに対面して配置しているが、先端の断面積が大きな突起部材１１はコア１Ａの表面に代えてキャビティ１Ｂの表面若しくはコア１Ａとキャビティ１Ｂの表面に形成されていてもよい。また、突起部材１１は複数個形成されていることを図示するが、１個であってもよい。 In FIG. 1, 1 is a mold for resin molding, and has a core 1A and a cavity 1B. The core 1A and the cavity 1B are both made of a metal material, and a plurality of protruding members 11 having a large cross-sectional area at the tips are formed on the surface of the core 1A, and a nozzle hole 12 is formed in the cavity 1B. ing. Although not shown, the core 1A is a movable mold that can be moved up and down by a mold opening/closing drive device, and the cavity 1B is a fixed mold that does not move, and the core 1A and cavity 1B are closed and used for resin molding. The mold 1 is in a closed state, and a space 1C is formed. This space 1C is filled by injecting resin for a resin molded article (thermoplastic resin is exemplified in this application) from the nozzle hole 12. Furthermore, since the core 1A and the cavity 1B are closed, the tip of the protruding member 11 formed on the surface of the core 1A is disposed in the space 1C facing the cavity 1B, but the cross-sectional area of the tip is The protruding member 11 having a large diameter may be formed on the surface of the cavity 1B instead of on the surface of the core 1A or on the surfaces of the core 1A and the cavity 1B. Moreover, although the figure shows that a plurality of protruding members 11 are formed, there may be only one protruding member 11.
（突起部材の形成）
図２は、本発明の突起部材を樹脂成形用金型のコアに形成する状態を示す。(Formation of protruding member)
FIG. 2 shows a state in which the protruding member of the present invention is formed on the core of a resin molding die.
図２において、金属材のコア１Ａの表面に沿った方向（Ｘ方向）にパルス状のレーザ光Ｌを走査させて、コア１Ａの表面に先端の断面積が大きな突起部材１１が形成される状態を示す。コア１Ａの表面に先端の断面積が大きな突起部材１１が形成されるには、発明者が研究してきたレーザ光の利用により行う。このレーザ光は、コア１Ａの金属材の熱拡散係数に基づきパルス状のレーザ光Ｌの走査周波数ｈ、レーザ光Ｌのパルス幅ｔおよびレーザ光Ｌの走査速度ｖからなるレーザ光Ｌの走査要件を特定しており、その走査要件を満たすパルス状のレーザ光Ｌをコア１Ａの表面に沿った方向に走査させながら照射することによりコア１Ａの表面に先端の断面積が大きな突起部材１１が形成される。 In FIG. 2, a protruding member 11 having a large cross-sectional area at the tip is formed on the surface of the core 1A by scanning the pulsed laser beam L in the direction along the surface of the core 1A (X direction). shows. The protruding member 11 having a large cross-sectional area at the tip is formed on the surface of the core 1A by using laser light, which has been researched by the inventor. This laser beam has the scanning requirements of the laser beam L, which is based on the thermal diffusion coefficient of the metal material of the core 1A, and consists of a scanning frequency h of the pulsed laser beam L, a pulse width t of the laser beam L, and a scanning speed v of the laser beam L. is specified, and by scanning and irradiating the pulsed laser beam L that meets the scanning requirements in the direction along the surface of the core 1A, a protrusion member 11 with a large cross-sectional area at the tip is formed on the surface of the core 1A. be done.
上記レーザ光の走査要件は下記式（１）で表わされる係数Ｒを特定して、係数Ｒが０．１～１．０件を満たすパルス状のレーザ光Ｌをコア１Ａの表面に沿った方向に走査させながら照射することによりコア１Ａの表面に先端の断面積が大きな突起部材１１が形成される。
Ｒ＝２ｈ√ｋｔ／ｖ・・・（１）
（ここで、式（１）中、ｈはレーザ光の走査周波数、√ｋｔにおけるｋは樹脂成形用金 型のキャビティやコアを構成する金属材の熱拡散係数、√ｋｔにおけるｔはレーザ光 のパルス幅、ｖはレーザ光の走査速度である。）The scanning requirements for the laser beam described above are as follows: Specify the coefficient R expressed by the following formula (1), and direct the pulsed laser beam L that satisfies the coefficient R from 0.1 to 1.0 in the direction along the surface of the core 1A. By irradiating while scanning, a protruding member 11 having a large cross-sectional area at the tip is formed on the surface of the core 1A.
R=2h√kt/v...(1)
(Here, in Equation (1), h is the scanning frequency of the laser beam, k in √kt is the thermal diffusion coefficient of the metal material constituting the cavity and core of the resin molding mold, and t in √kt is the scanning frequency of the laser beam. The pulse width, v, is the scanning speed of the laser beam.)
この場合、図示しないが、コア１Ａに代えて樹脂成形用金型１のキャビティ１Ｂに若しくはコア１Ａとキャビティ１Ｂの表面に上記特定した走査要件によりパルス状のレーザ光Ｌを走査してキャビティ１Ｂの表面若しくはコア１Ａとキャビティ１Ｂの表面に先端の断面積が大きな突起部材１１を形成してもよい。 In this case, although not shown, a pulsed laser beam L is scanned on the cavity 1B of the resin molding mold 1 instead of the core 1A or on the surfaces of the core 1A and the cavity 1B according to the scanning requirements specified above. A protruding member 11 having a large cross-sectional area at the tip may be formed on the surface or on the surface of the core 1A and the cavity 1B.
（樹脂成形用金型に形成される突起部材の確認）
式１において、コア１Ａの金属材の熱拡散係数ｋが６．６１ｍｍ２／ｓｅｃであって、走査周波数ｈが５０Ｈｚ、走査速度Ｖが１５０ｍｍ／ｓｅｃおよびパルス幅ｔが１００ｓｅｃとして係数Ｒが０．５４２で、レーザ光Ｌをコア１Ａの表面にＸ方向に走査すると、コア１Ａの表面には先端の断面積が大きな突起部材１１が形成されたが、同じ走査周波数ｈおよびパルス幅ｔで走査速度Ｖが７０ｍｍ／ｓｅｃとし係数Ｒが１．１６１でレーザ光Ｌを走査すると、コア１Ａの表面に突起部材１１は形成されるが、その先端の断面積は大きくはなかった。また、走査周波数ｈが１００Ｈｚ、走査速度Ｖが１０００ｍｍ／ｓｅｃおよびパルス幅ｔが２７．６ｓｅｃとし係数Ｒが０．０８５でレーザ光Ｌを走査すると、コア１Ａの表面に突起部材は形成されなかった。このように、コア１Ａの金属材の熱拡散係数ｋに基づきパルス状のレーザ光Ｌの走査周波数、レーザ光Ｌのパルス幅およびレーザ光Ｌの走査速度からなるレーザ光Ｌの走査要件を特定することが、コア１Ａの表面に先端の断面積が大きな突起部材１１が形成されることに重要な走査要件であり、レーザ加工として有用であることが立証できた。(Checking the protruding members formed on the resin molding mold)
In Equation 1, the coefficient R is 0.542 assuming that the thermal diffusion coefficient k of the metal material of the core 1A is 6.61 mm2/sec, the scanning frequency h is 50 Hz, the scanning speed V is 150 mm/sec, and the pulse width t is 100 sec. When the laser beam L was scanned in the X direction on the surface of the core 1A, a protruding member 11 with a large cross-sectional area at the tip was formed on the surface of the core 1A, but at the same scanning frequency h and pulse width t, the scanning speed V When the laser beam L was scanned at a rate of 70 mm/sec and a coefficient R of 1.161, a protrusion member 11 was formed on the surface of the core 1A, but the cross-sectional area of its tip was not large. Further, when the laser beam L was scanned at a scanning frequency h of 100 Hz, a scanning speed V of 1000 mm/sec, a pulse width t of 27.6 sec, and a coefficient R of 0.085, no protruding member was formed on the surface of the core 1A. . In this way, the scanning requirements of the laser beam L are specified, which consist of the scanning frequency of the pulsed laser beam L, the pulse width of the laser beam L, and the scanning speed of the laser beam L, based on the thermal diffusion coefficient k of the metal material of the core 1A. This is an important scanning requirement for forming the protruding member 11 having a large cross-sectional area at the tip on the surface of the core 1A, and it has been proven that it is useful for laser processing.
（樹脂成形用金型による樹脂成形品の製造）
図３～図７を参照して、樹脂成形用金型を用いて樹脂成形品の製造を説明する。(Manufacture of resin molded products using resin molding molds)
Manufacturing of a resin molded product using a resin molding die will be described with reference to FIGS. 3 to 7.
図３は、樹脂成形用金型を用いて樹脂成形品を製造する製造工程図を示す。図３において、その製造工程は、加熱された樹脂成形用金型１に樹脂成形品用樹脂を充填する溶融樹脂充填工程９１と、充填した溶融樹脂１００Ａが樹脂成形用金型１を冷却する過程で固化される前の軟化した状態でその軟化した樹脂をキャビティ１Ｂに残存させたままコア１Ａの突起部材１１から切り離す分離工程９２と、キャビティ１Ｂに残存した溶融樹脂１００Ａを固化させてキャビティ１Ｂから取り出す冷却工程９３とからなる。 FIG. 3 shows a manufacturing process diagram for manufacturing a resin molded product using a resin molding die. In FIG. 3, the manufacturing process includes a molten resin filling step 91 in which a heated resin molding mold 1 is filled with resin for a resin molded article, and a step in which the filled molten resin 100A cools the resin molding mold 1. A separation step 92 in which the softened resin is separated from the protrusion member 11 of the core 1A while remaining in the cavity 1B in a softened state before being solidified, and a separation step 92 in which the molten resin 100A remaining in the cavity 1B is solidified and removed from the cavity 1B. It consists of a cooling step 93 for taking out.
図４は、図１に記載の樹脂成形用金型１を溶融樹脂充填工程９１に用いる閉じられた状態の樹脂成形用金型１を示す。図４において、樹脂成形用金型１は図１に記載の通り、金属材でできたコア１Ａと金属材でできたキャビティ１Ｂとを有する射出成形金型であり、コア１Ａは金型開閉駆動装置（図示せず）に上下に可動する型であり、キャビティ１Ｂはノズル孔１２を有する固定された型であり、キャビティ１Ｂの上面には樹脂成形品用樹脂をコア１Ａとキャビティ１Ｂとからなる空間部１Ｃにノズル孔１２を介して射出し充填するノズル２が設けられている。３はコア１Ａに遊嵌して上下動される保持部材で、その先端は空間部１Ｃに露出している。コア１Ａとキャビティ１Ｂとが閉じられ、樹脂成形用金型１が閉じられて形成された空間部１Ｃにコア１Ａの表面からキャビティ１Ｂ方向に延出した先端の断面積が大きな突起部材１１が配置されており、コア１Ａとキャビティ１Ｂとが加熱されることによりこの空間部１Ｃは加熱され、樹脂成形品用樹脂がノズル２からノズル孔１２を介してこの加熱された空間部１Ｃに射出し充填されて溶融している。このように溶融樹脂充填工程９１では、樹脂成形品用樹脂が加熱された樹脂成形用金型１に充填されることにより溶融状態になる。この樹脂成形品用樹脂の素材は、加熱された樹脂成形用金型１に充填されることにより溶融し冷却過程で軟化状態となる樹脂であればよい。その樹脂としては、ポリプロピレン樹脂（ＰＰ樹脂）、ポリアセタール樹脂（ＰＯＭ樹脂）、ポリフェニレンサルファイド樹脂（ＰＰＳ樹脂）、ポリエーテルエーテルケトン樹脂（ＰＥＥＫ樹脂）、アクリロニトリル・ブタジエン・スチレン樹脂（ＡＢＳ樹脂）、ポリエチレン樹脂（ＰＥ樹脂）、ポリブチレンテレフタレート樹脂（ＰＢＴ樹脂）、ナイロン６６（ＰＡ６６）などのポリアミド樹脂（ＰＡ樹脂）、液晶ポリマー（ＬＣＰ樹脂）、変性ポリフェニレンエーテル樹脂（変性ＰＰＥ樹脂）、リアクター型軟質ポリプロピレン系樹脂（メタロセン系リアクター型ＴＰＯ樹脂）などの熱可塑性樹脂が例示でき、この熱可塑性樹脂においては、炭素繊維やガラス繊維やタルクなどの補強材、難燃化材、劣化防止剤、エラストマー成分などから少なくともひとつを選択して配合された熱可塑性樹脂、例えば、炭素繊維が配合された炭素繊維強化熱可塑性樹脂（ＣＦＲＴＰ）であってもよい。 FIG. 4 shows the resin molding mold 1 shown in FIG. 1 in a closed state when the resin molding mold 1 is used in a molten resin filling step 91. In FIG. 4, the resin molding mold 1 is an injection molding mold having a core 1A made of a metal material and a cavity 1B made of a metal material, as shown in FIG. 1, and the core 1A drives the opening and closing of the mold. It is a mold that can be moved up and down by a device (not shown), and the cavity 1B is a fixed mold having a nozzle hole 12, and the upper surface of the cavity 1B is made up of a core 1A and a cavity 1B, in which resin for resin molding is applied. A nozzle 2 for injecting and filling the space 1C through a nozzle hole 12 is provided. Reference numeral 3 denotes a holding member which is loosely fitted into the core 1A and is moved up and down, the tip of which is exposed to the space 1C. The core 1A and the cavity 1B are closed, and a protrusion member 11 having a large cross-sectional area at the tip extending from the surface of the core 1A toward the cavity 1B is arranged in the space 1C formed by closing the resin molding mold 1. By heating the core 1A and the cavity 1B, this space 1C is heated, and the resin for the resin molded product is injected and filled into this heated space 1C from the nozzle 2 through the nozzle hole 12. It has been melted. In this manner, in the molten resin filling step 91, the resin for a resin molded article is filled into the heated resin molding mold 1, thereby becoming in a molten state. The material of the resin for the resin molded article may be any resin that melts when filled into the heated resin molding mold 1 and becomes softened during the cooling process. The resins include polypropylene resin (PP resin), polyacetal resin (POM resin), polyphenylene sulfide resin (PPS resin), polyetheretherketone resin (PEEK resin), acrylonitrile butadiene styrene resin (ABS resin), and polyethylene resin. (PE resin), polybutylene terephthalate resin (PBT resin), polyamide resin (PA resin) such as nylon 66 (PA66), liquid crystal polymer (LCP resin), modified polyphenylene ether resin (modified PPE resin), reactor type soft polypropylene resin Examples include thermoplastic resins such as resins (metallocene-based reactor type TPO resins), and in this thermoplastic resin, reinforcing materials such as carbon fiber, glass fiber, and talc, flame retardants, deterioration inhibitors, elastomer components, etc. At least one thermoplastic resin may be selected and blended, for example, a carbon fiber reinforced thermoplastic resin (CFRTP) blended with carbon fibers.
図５は、分離工程９２において、樹脂成形品用樹脂が溶融状態になるように加熱された樹脂成形用金型１が冷却される過程で、コア１Ａが矢印方向に下降して軟化状態の溶融樹脂１００Ａがキャビティ１Ｂから切り離されるようにコア１Ａとキャビティ１Ｂとが開いた樹脂成形用金型１を示す。図５において、コア１Ａが矢印方向に下降する際、軟化状態の溶融樹脂１００Ａはコア１Ａから突出している保持部材３で落下しないように保持されている。このように加熱された樹脂成形用金型１が冷却される過程でキャビティ１Ｂから切り離されて軟化状態の溶融樹脂１００Ａとなり、コア１Ａの複数個の突起部材１１により溶融樹脂１００Ａには下面に連通したアンカ形状の凹所１０１が複数個形成されている。 FIG. 5 shows a process in which the resin molding die 1, which has been heated so that the resin for the resin molded product becomes molten, is cooled in the separation step 92, and the core 1A descends in the direction of the arrow to melt the resin in a softened state. The resin molding die 1 is shown in which the core 1A and the cavity 1B are opened so that the resin 100A is separated from the cavity 1B. In FIG. 5, when the core 1A descends in the direction of the arrow, the softened molten resin 100A is held by the holding member 3 protruding from the core 1A so as not to fall. In the process of cooling the resin molding die 1 heated in this way, it is separated from the cavity 1B and becomes a softened molten resin 100A, and the molten resin 100A is communicated with the lower surface by the plurality of protruding members 11 of the core 1A. A plurality of anchor-shaped recesses 101 are formed.
図６は、冷却工程９３において、樹脂成形用金型１を開いて樹脂成形品１００を得る状態を示す。図６において、軟化状態の溶融樹脂１００Ａが冷却されて固化された樹脂成形品１００となり、コア１Ａから突出していた保持部材３の先端がコア１Ａの上面位置まで下降して、樹脂成形用金型１から樹脂成形品１００が得られ、図７に示すように、樹脂成形品１００の内部にはコア１Ａの突起部材１１による凹所１０１が複数個形成されており、それぞれの凹所１０１は樹脂成形品１００の下面に連通したアンカ形状となっている。 FIG. 6 shows a state in which the resin molding mold 1 is opened to obtain a resin molded product 100 in the cooling step 93. In FIG. 6, the molten resin 100A in a softened state is cooled and becomes a solidified resin molded product 100, and the tip of the holding member 3 protruding from the core 1A is lowered to the upper surface position of the core 1A, and the resin molding mold is A resin molded product 100 is obtained from the resin molded product 100, and as shown in FIG. It has an anchor shape that communicates with the lower surface of the molded product 100.
（樹脂成形用金型の二色成形への利用）
図８および図９を参照して樹脂成形用金型１で得られた樹脂成形品１００を１次成形品とし、２次成形用樹脂を樹脂層２００として１次成形品の樹脂成形品１００に積層する二色成形を説明する。(Use of resin molding mold for two-color molding)
Referring to FIGS. 8 and 9, the resin molded product 100 obtained with the resin molding die 1 is used as the primary molded product, and the resin for secondary molding is used as the resin layer 200 to form the resin molded product 100 as the primary molded product. Two-color molding with lamination will be explained.
図８は、二色成形金型１０を示し、その二色成形金型１０はコア１０Ａとキャビティ１０Ｂとを有する射出成形金型であり、コア１０Ａは金型開閉駆動装置（図示せず）により上下に可動する型であり、キャビティ１０Ｂは固定された型で上方に２次成形用樹脂をコア１０Ａとキャビティ１０Ｂとからなる空間部１０Ｃに射出して充填するノズル２０が設けられている。図８において、図７に記載の樹脂成形品１００を上下逆にして、アンカ形状で凹所１０１が上面に連通された状態の樹脂成形品１００をコア１０Ａにセットし、樹脂成形品１００の上面がキャビティ１０Ｂに対面されるようにして、二色成形金型１０を閉じて樹脂成形品１００とキャビティ１０Ｂとの間の空間部１０Ｃにノズル２０から２次成形用樹脂を射出し充填して２次成形用樹脂が樹脂成形品１００の上面に連通された部位からアンカ形状の凹所１０１に入り込んで固化されて、樹脂層２００が樹脂成形品１００に積層され、図９に示すように、樹脂層２００が樹脂成形品１００に結合して積層された二色成形品３００が得られる。このようにして得られた二色成形品３００は樹脂層２００が樹脂成形品１００の上面に連通された部位からアンカ形状の凹所１０１に樹脂成形品１００が入り込んで、アンカ効果により、樹脂成形品１００と樹脂層２００との結合を高めた二色成形品３００となっているので、結合性の低い樹脂材の二色成形であっても結合性を高めることができる。この場合、樹脂成形品１００の凹所１０１は樹脂成形品１００の上面のみに連通するように形成されて、樹脂層２００が樹脂成形品１００の上面に積層されていることを図示するが、コア１０Ａおよびキャビティ１０Ｂの表面に沿った方向にパルス状のレーザ光Ｌを走査させて、図示しないが、コア１Ａとキャビティ１Ｂの表面に先端の断面積が大きな突起部材１１が形成された樹脂成形用金型１を用いることにより、両面に凹所１０１が形成された樹脂成形品１００を得て、この樹脂成形品１００を二色成形金型１０内にセットして、樹脂成形品１００の両面に２次成形用樹脂を射出して成形すれば、樹脂成形品１００の両面にアンカ効果により結合性を高めた樹脂層２００が積層された二色成形品３００が得られる。このようにして樹脂成形用金型１は、コア１Ａとキャビティ１Ｂの少なくとも一方の表面に先端の断面積が大きな突起部材１１が形成されているので、樹脂成形用金型１で成形された樹脂成形品１００を１次成形品とし、２次成形用樹脂を樹脂層２００として積層する二色成形に用いて樹脂成形品１００と樹脂層２００との結合性を高めることができる。 FIG. 8 shows a two-color mold 10, which is an injection mold having a core 10A and a cavity 10B, and the core 10A is driven by a mold opening/closing drive device (not shown). The mold is movable up and down, and the cavity 10B is a fixed mold, and a nozzle 20 is provided above the mold for injecting secondary molding resin into the space 10C consisting of the core 10A and the cavity 10B. In FIG. 8, the resin molded product 100 shown in FIG. 7 is turned upside down, and the resin molded product 100 in an anchor shape with the recess 101 communicating with the upper surface is set in the core 10A, and the upper surface of the resin molded product 100 is The two-color molding die 10 is closed so that it faces the cavity 10B, and the space 10C between the resin molded product 100 and the cavity 10B is injected and filled with secondary molding resin from the nozzle 20. Next, the resin for molding enters the anchor-shaped recess 101 from the part communicated with the upper surface of the resin molded product 100 and is solidified, and the resin layer 200 is laminated on the resin molded product 100. As shown in FIG. A two-color molded product 300 is obtained in which the layer 200 is bonded to the resin molded product 100 and laminated. In the two-color molded product 300 obtained in this way, the resin molded product 100 enters the anchor-shaped recess 101 from the part where the resin layer 200 is communicated with the upper surface of the resin molded product 100, and the anchor effect causes the resin molding Since the two-color molded product 300 has improved bonding between the product 100 and the resin layer 200, the bonding ability can be improved even when two-color molding is performed using a resin material with low bonding ability. In this case, the recess 101 of the resin molded product 100 is formed so as to communicate only with the top surface of the resin molded product 100, and the resin layer 200 is laminated on the top surface of the resin molded product 100. For resin molding, a projection member 11 having a large cross-sectional area at the tip is formed on the surface of the core 1A and the cavity 1B (not shown) by scanning a pulsed laser beam L in a direction along the surfaces of the core 1A and the cavity 10B. By using the mold 1, a resin molded product 100 with recesses 101 formed on both sides is obtained, and this resin molded product 100 is set in the two-color mold 10, and both sides of the resin molded product 100 are By injecting and molding the resin for secondary molding, a two-color molded product 300 can be obtained in which resin layers 200 with improved bonding properties due to the anchor effect are laminated on both sides of the resin molded product 100. In this way, the resin molding mold 1 has the projection member 11 having a large cross-sectional area at the tip formed on at least one surface of the core 1A and the cavity 1B, so that the resin molded in the resin molding mold 1 can be The bondability between the resin molded product 100 and the resin layer 200 can be improved by using two-color molding in which the molded product 100 is used as the primary molded product and the resin for secondary molding is laminated as the resin layer 200.
本発明は樹脂成形用金型で得られた樹脂成形品を二色成形工程に利用できる。According to the present invention, a resin molded product obtained with a resin molding mold can be used in a two-color molding process.
１ 樹脂成形用金型
１Ａ コア
１Ｂ キャビティ
１Ｃ 空間部
１１ 突起部材
１２ ノズル孔
２ ノズル
３ 保持部材
１００ 樹脂成形品
１０１ 凹所1 Resin molding mold 1A Core 1B Cavity 1C Space 11 Projection member 12 Nozzle hole 2 Nozzle 3 Holding member 100 Resin molded product 101 Recess
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022063143A JP2023138210A (en) | 2022-03-17 | 2022-03-17 | Resin molding mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022063143A JP2023138210A (en) | 2022-03-17 | 2022-03-17 | Resin molding mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2023138210A true JP2023138210A (en) | 2023-10-02 |
Family
ID=88197456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022063143A Pending JP2023138210A (en) | 2022-03-17 | 2022-03-17 | Resin molding mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2023138210A (en) |
-
2022
- 2022-03-17 JP JP2022063143A patent/JP2023138210A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2601452B2 (en) | How to make bristle products | |
| JP5462107B2 (en) | Method and apparatus for manufacturing hollow molded article | |
| US20200406516A1 (en) | Molded article manufacturing method, molded article, and molded article manufacturing apparatus | |
| JP2002011749A (en) | Method and apparatus for injection-molding molded article having hollow part | |
| EP0755763A1 (en) | Method of manufacturing multi-layered moldings | |
| JP2014172279A (en) | Molding method and molding apparatus | |
| JP2023138210A (en) | Resin molding mold | |
| JP6151923B2 (en) | Molding method | |
| KR0163769B1 (en) | Mold for compression molding of a resin article | |
| JP4066071B2 (en) | Synthetic resin hollow body, method for producing the same, and mold thereof | |
| JP3842718B2 (en) | Multilayer hollow body injection molding method and injection molding die | |
| JP6189371B2 (en) | Molding method for hollow molded products | |
| JP5967014B2 (en) | Method for manufacturing molded structure | |
| JP2010201667A (en) | Injection molding die | |
| JP2004250154A (en) | Manufacturing method of moving handrail for passenger conveyor | |
| JPH03142207A (en) | Injection molding method | |
| JP2000043126A (en) | Preform of two-layered constitution for stretch blow molding | |
| JP6418102B2 (en) | Manufacturing method of resin fuel tank | |
| JPH06155509A (en) | Production of resin tubular body | |
| JP2003245944A (en) | Method for injection-molding multilayered hollow body made of synthetic resin | |
| KR100549394B1 (en) | Runner device for in-mold forming | |
| JP2006255937A (en) | Injection molding, continuous molding method of high frequency welder and molded product | |
| JP7350255B2 (en) | Manufacturing method for foamed resin molded products | |
| JPH0948047A (en) | Mold and manufacture of molding using the mold | |
| JP2015009522A (en) | Method for manufacturing molded structure |