JP2006305931A

JP2006305931A - Molding equipment, molding method and molded product

Info

Publication number: JP2006305931A
Application number: JP2005133157A
Authority: JP
Inventors: Hideki Fukuchi; 英記福地; Toru Sawairi; 透沢入; Hideki Fujita; 秀樹藤田; Makoto Mochizuki; 眞望月; Akira Hara; 章原; Kazusane Ueno; 和実上野
Original assignee: Bandai Co Ltd
Current assignee: Bandai Co Ltd
Priority date: 2005-04-28
Filing date: 2005-04-28
Publication date: 2006-11-09

Abstract

<P>PROBLEM TO BE SOLVED: To provide molding equipment, with which a multi-color molded product can be molded without transferring a previously molded product to a following molding tool and which has a simple structure and easily assemble. <P>SOLUTION: In molding equipment 1, the molding tool 80 is formed by joining a first mold 10 with a second mold 60. The mold tool 80 is provided with a secondary molding recess 91 for molding a shaft-like secondary molded product P, first molding recesses 94 for molding primary molded products R around the secondary molded product P and a molding pin 103 removably installed in the secondary molding recess 91. In addition, in the mold tool 80, an elastic member 120 for energizing the molding pin 103 towards the inserting direction of the secondary molding recess 91 is provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、一次成形によって成形された一次成形物を、二次成形によって成形された二次成形物に可動可能に取り付けた成形物を成形する成形装置及び成形方法並びに成形装置又は成形方法によって成形される成形物に関する。 The present invention relates to a molding apparatus and a molding method, and a molding apparatus or a molding method for molding a molded article in which a primary molded article molded by primary molding is movably attached to a secondary molded article molded by secondary molding. Related to molded articles.

従来の成形装置は、移動金型と固定金型とからなり、射出成形装置の移動側に移動金型が取り付けられ、射出成形装置の固定側に固定金型が取り付けられるようになっていた。そして、射出成形装置を駆動して移動金型が固定金型に接合されると、移動金型と固定金型との間に一次成形型と二次成形型が形成された。一次成形型内に第１の成形樹脂素材を流し込む第１の成形工程により一次成形物が形成された。この一次成形物は、これと一体のランナーが移送手段により保持され、二次成形型内に移送される。二次成形型内に、第１の成形樹脂素材の融点より低い融点の第２の成形樹脂素材を流し込む第２の成形工程によって、一次成形物を第２の成形樹脂素材で包み込んだ二次成形物（多色成形物）が成形された。また、従来の成形装置の移送手段は、一次成形物のランナーを保持する回転台と、回転台を回転させる回転軸と、回転軸を駆動する油圧装置等の動力装置と、回転台を押し出す押圧軸と、押圧軸を取り付ける摺動台と、摺動台を摺動させる油圧装置とからなっていた（例えば、特許文献１）。
特開平８−１１８４１０号公報 A conventional molding apparatus includes a movable mold and a fixed mold. The movable mold is attached to the moving side of the injection molding apparatus, and the fixed mold is attached to the fixed side of the injection molding apparatus. When the movable mold was joined to the fixed mold by driving the injection molding apparatus, a primary mold and a secondary mold were formed between the movable mold and the fixed mold. The primary molded product was formed by the first molding step in which the first molding resin material was poured into the primary molding die. The primary molded product is transferred to a secondary mold by a runner integral with the primary molded product held by a transfer means. Secondary molding in which the primary molded product is wrapped with the second molding resin material by the second molding process in which a second molding resin material having a melting point lower than that of the first molding resin material is poured into the secondary molding die. A product (multicolor molded product) was molded. Further, the transfer means of the conventional molding apparatus includes a rotary table that holds the runner of the primary molded product, a rotary shaft that rotates the rotary base, a power device such as a hydraulic device that drives the rotary shaft, and a press that pushes the rotary base. It consisted of a shaft, a slide base to which the pressing shaft is attached, and a hydraulic device for sliding the slide base (for example, Patent Document 1).
JP-A-8-118410

従来の成形装置は、上記したように、一次成形物を一次成形型で成形し、当該一次成形物を移送手段により二次成形型に移送し、二次成形型において一次成形物をインサート成形するので、一次成形物を二次成形物内に挿設することができるが、二次成形物を一次成形物内に挿設することはできないという問題点があった。また、従来の成形装置は、上記した移送手段が移動金型に組み込まれているので、部品点数が多く高価であり、構造が複雑で組立が面倒であり、大型化及び重量化により搬送・保管が不便であり、射出成形装置へ取り付けが極めて難しいという問題点があった。また、従来の成形装置は、一次成形物を二次成形型に移送するので、移送に要する時間分、成形サイクルが長くなるという問題点があった。 As described above, the conventional molding apparatus molds the primary molded product with the primary molding die, transfers the primary molded product to the secondary molding die by the transfer means, and insert-molds the primary molded product with the secondary molding die. As a result, the primary molded product can be inserted into the secondary molded product, but the secondary molded product cannot be inserted into the primary molded product. In addition, the conventional molding apparatus incorporates the transfer means described above into the moving mold, so it has a large number of parts, is expensive, has a complicated structure and is difficult to assemble, and is transported and stored by increasing its size and weight. Is inconvenient and has a problem that it is extremely difficult to attach to an injection molding apparatus. Further, since the conventional molding apparatus transfers the primary molded product to the secondary molding die, there is a problem that the molding cycle becomes longer by the time required for the transfer.

本願発明は、上記問題点に鑑み案出したものであって、高価化、複雑化、大型化、重量化を招くことなく、先に成形した成形物内に、後から成形した成形物を挿設することができ、しかも、先の成形物を後の成形型に移送しないで多色成形物を成形することができるので、構造が複雑で組立が面倒な移送手段が不要な成形装置を提供することを第１の目的とする。また、高価化、複雑化、大型化、重量化を招くことなく、先に成形した成形物内に、後から成形した成形物を挿設することができ、しかも、先の成形物を後の成形型に移送しないで多色成形物を成形することができるので、構造が複雑で組立が面倒な移送手段が不要な成形方法を提供することを第２の目的とする。さらに、上記成形装置及び成形方法に適した成形物を提供することを第３の目的とする。 The present invention has been devised in view of the above-mentioned problems, and inserts a molded product formed later into a molded product formed earlier without incurring cost, complexity, size increase, and weight. A multi-color molded product can be molded without transferring the previous molded product to a subsequent molding die, so that a molding apparatus that has a complicated structure and does not require assembling is provided. This is the first purpose. In addition, the molded product molded later can be inserted into the molded product molded earlier without incurring an increase in cost, complexity, size, and weight. A second object of the present invention is to provide a molding method in which a multi-color molded product can be molded without being transferred to a molding die, and a transfer means that has a complicated structure and is difficult to assemble is unnecessary. Furthermore, it is a third object to provide a molded product suitable for the molding apparatus and the molding method.

本願請求項１に係る成形装置は、上記第１の目的を達成するため、第１の金型と第２の金型とからなり、前記第１の金型と前記第２の金型が接合することによって成形型が形成される成形装置であって、前記成形型には、軸状の二次成形物を成形する二次成形凹部と、二次成形物の周囲に一次成形物を成形する一次成形凹部と、二次成形凹部内に挿脱可能
に設けられた成形ピンと、が設けられている。 In order to achieve the first object, the molding apparatus according to claim 1 includes a first mold and a second mold, and the first mold and the second mold are joined together. A molding apparatus for forming a molding die by forming a secondary molding recess for molding a shaft-shaped secondary molding and a primary molding around the secondary molding. A primary molding recess and a molding pin provided in the secondary molding recess so as to be insertable / removable are provided.

本願請求項２に係る成形装置は、上記第１の目的を達成するため、前記成形型には、前記成形ピンを二次成形凹部の挿入方向に付勢する弾性部材が設けられている。 In the molding apparatus according to claim 2 of the present application, in order to achieve the first object, the molding die is provided with an elastic member that biases the molding pin in the insertion direction of the secondary molding recess.

本願請求項３に係る成形装置は、上記第１の目的を達成するため、前記成形型には、前記成形ピンを二次成形凹部内に挿脱させるアクチュエータが設けられている。 In the molding apparatus according to claim 3 of the present application, in order to achieve the first object, the molding die is provided with an actuator for inserting and removing the molding pin into the secondary molding recess.

本願請求項４に係る成形装置は、上記第１の目的を達成するため、前記成形型には、前記一次成形凹部に一次成形樹脂素材を流し込む一次ランナー溝と、前記二次成形凹部に二次成形樹脂素材を流し込む二次ランナー溝とが設けられている。 In order to achieve the first object, a molding apparatus according to claim 4 of the present application has a primary runner groove for pouring a primary molding resin material into the primary molding recess, and a secondary runner into the secondary molding recess to achieve the first object. A secondary runner groove into which the molded resin material is poured is provided.

本願請求項５に係る成形装置は、上記第１の目的を達成するため、前記成形型には、前記一次成形凹部に一次成形樹脂素材を流し込む一次ランナー溝と、前記二次成形凹部に、前記成形ピンを弾性部材の弾性に抗して二次成形凹部から押し出しながら二次成形樹脂素材を流し込む二次ランナー溝とが設けられている。 In order to achieve the first object, the molding apparatus according to claim 5 of the present application has a primary runner groove for pouring a primary molding resin material into the primary molding recess, and a secondary molding recess in the molding die. A secondary runner groove into which the secondary molding resin material is poured while the molding pin is pushed out of the secondary molding recess against the elasticity of the elastic member is provided.

本願請求項６に係る成形装置は、上記第１の目的を達成するため、前記二次成形凹部の両側には、軸状の二次成形物の両側に鍔部を成形する鍔成形凹部が形成されている。 In order to achieve the first object, the forming apparatus according to claim 6 of the present invention forms a saddle forming recess for forming a flange on both sides of the shaft-like secondary molded product on both sides of the secondary forming recess. Has been.

本願請求項７に係る成形物の成形方法は、上記第２の目的を達成するため、成形ピンが弾性部材により挿入方向に付勢された状態で内部に挿入された成形空間に第１の成形樹脂素材を射出して成形ピンの周囲に一次成形物を成形する第１の成形工程と、第１の成形樹脂素材の融点より低い融点の第２の成形樹脂素材を成形空間に射出し、第２の成形樹脂素材の流入圧力により成形ピンを押し出しながら、成形ピンが押し出されることによって形成される一次成形物の空洞に、二次成形物を成形し、二次成形物の周囲に一次成形物を可動可能にした成形物を成形する第２の成形工程とからなる。 In order to achieve the second object, the molding method of the molded product according to claim 7 of the present application is the first molding in the molding space inserted into the molding pin while being urged in the insertion direction by the elastic member. A first molding step of injecting a resin material and molding a primary molded product around the molding pin; and a second molding resin material having a melting point lower than the melting point of the first molding resin material is injected into the molding space; While the molding pin is pushed out by the inflow pressure of the molding resin material 2, the secondary molding is molded in the cavity of the primary molding formed by the extrusion of the molding pin, and the primary molding is formed around the secondary molding. And a second molding step of molding a molded product that is movable.

本願請求項８に係る成形物の成形方法は、上記第２の目的を達成するため、成形ピンがアクチュエータにより内部に挿入された成形空間に第１の成形樹脂素材を射出して成形ピンの周囲に一次成形物を成形する第１の成形工程と、アクチュエータにより成形ピンを一次成形物から引き抜き、一次成形物に空洞を形成する第２の成形工程と、一次成形物の空洞に、第１の成形樹脂素材の融点より低い融点の第２の成形樹脂素材を射出して二次成形物を成形し、二次成形物の周囲に一次成形物を可動可能にした成形物を成形する第３の成形工程とからなる。 In order to achieve the second object, the molding method according to claim 8 of the present application injects the first molding resin material into the molding space in which the molding pin is inserted by the actuator to surround the molding pin. A first molding step for molding a primary molded product, a second molding step for drawing a molding pin from the primary molded product by an actuator to form a cavity in the primary molded product, and a first molding step for forming a cavity in the primary molded product. A second molded resin material having a melting point lower than the melting point of the molded resin material is injected to form a secondary molded product, and a molded product in which the primary molded product is movable around the secondary molded product is molded. It consists of a molding process.

本願請求項９に係る成形物は、上記第３の目的を達成するため、軸状の二次成形物と、二次成形物の周囲に可動可能に取り付けられた一次成形物とからなり、一次成形物は、第１の成形樹脂素材によって成形され、内部に空洞が形成されており、二次成形物は、第１の成形樹脂素材よりも融点の低い第２の成形樹脂素材によって軸状に成形され、一次成形物の空洞に挿通されている。 In order to achieve the third object, the molded product according to claim 9 of the present application is composed of a shaft-shaped secondary molded product and a primary molded product movably attached around the secondary molded product. The molded product is molded by the first molded resin material, and a cavity is formed inside, and the secondary molded product is axially formed by the second molded resin material having a melting point lower than that of the first molded resin material. Molded and inserted into the cavity of the primary molding.

本願請求項１０に係る成形物は、上記第３の目的を達成するため、二次成形物の両側には、二次成形物から一次成形物が外れるのを阻止する鍔部が成形されている。 In order to achieve the third object, the molded product according to claim 10 of the present application is formed with hooks on both sides of the secondary molded product to prevent the primary molded product from coming off from the secondary molded product. .

本願発明に係る成形装置は、成形型に、軸状の二次成形物を成形する二次成形凹部と、二次成形物の周囲に一次成形物を成形する一次成形凹部と、二次成形凹部内に挿脱可能に設けられた成形ピンとが設けられている。本願発明に係る成形装置は、二次成形凹部内に成形ピンが挿入された状態で一次成形凹部内に第１の成形樹脂素材を射出して流し込むと
、成形ピンの周りに一次成形物が成形される。次に二次成形凹部内に第２の成形樹脂素材を射出して流し込むと、第２の成形樹脂素材の流入圧力により成形ピンが二次成形凹部から押し出され、成形ピンが押し出されることによって形成される一次成形物の空洞に第２の成形樹脂素材が流入して軸状の二次成形物が成形されるという効果がある。 A molding apparatus according to the present invention comprises: a secondary molding recess that molds a shaft-shaped secondary molding in a molding die; a primary molding recess that molds a primary molding around the secondary molding; and a secondary molding recess. A forming pin provided so as to be removably inserted therein is provided. In the molding apparatus according to the present invention, when the first molding resin material is injected and poured into the primary molding recess with the molding pin inserted in the secondary molding recess, the primary molded product is molded around the molding pin. Is done. Next, when the second molding resin material is injected and poured into the secondary molding recess, the molding pin is pushed out from the secondary molding recess by the inflow pressure of the second molding resin material, and the molding pin is pushed out to form There is an effect that the second molding resin material flows into the cavity of the primary molded product to be molded and the shaft-shaped secondary molded product is molded.

このように、本願発明に係る成形装置は、先に成形した成形物内に、後から成形した成形物を挿設した多色成形物を成形することができるという効果がある。また、本願発明に係る成形装置は、一つの成形型で多色成形物を成形することができるので、構造が複雑で組立が面倒な移送手段が不要で、部品点数が少なくなって安価であり、構造が簡単で組立が容易であり、小型化及び軽量化により搬送・保管が便利であり、射出成形装置へ取り付けを簡単に行うことが出来るという効果がある。また、本願発明に係る成形装置は、一次成形物を二次成形型に移送する時間がない分、成形サイクルを短くすることができるという効果がある。 As described above, the molding apparatus according to the present invention has an effect of being able to mold a multicolor molded product in which the molded product molded later is inserted into the molded product molded earlier. In addition, since the molding apparatus according to the present invention can mold a multi-color molded product with a single molding die, there is no need for a transfer means that has a complicated structure and is difficult to assemble, and the number of parts is reduced and the cost is low. The structure is simple and easy to assemble, and it is convenient to transport and store due to the miniaturization and weight reduction, and can be easily attached to the injection molding apparatus. In addition, the molding apparatus according to the present invention has an effect that the molding cycle can be shortened because there is no time to transfer the primary molded product to the secondary molding die.

本願発明に係る成形装置は、前記成形ピンを二次成形凹部の挿入方向に付勢する弾性部材が設けられている。本願発明に係る成形装置は、二次成形凹部内に成形ピンが挿入された状態で一次成形凹部内に第１の成形樹脂素材を射出して流し込むと、成形ピンの周りに一次成形物が成形される。次に二次成形凹部内に第２の成形樹脂素材を射出して流し込むと、第２の成形樹脂素材の流入圧力により成形ピンが弾性部材の弾性に抗して二次成形凹部から押し出され、成形ピンが押し出されることによって形成される一次成形物の空洞に第２の成形樹脂素材が流入して軸状の二次成形物が成形されるという効果がある。 The molding apparatus according to the present invention is provided with an elastic member that biases the molding pin in the insertion direction of the secondary molding recess. In the molding apparatus according to the present invention, when the first molding resin material is injected and poured into the primary molding recess with the molding pin inserted in the secondary molding recess, the primary molded product is molded around the molding pin. Is done. Next, when the second molding resin material is injected and poured into the secondary molding recess, the molding pin is pushed out of the secondary molding recess against the elasticity of the elastic member by the inflow pressure of the second molding resin material, There is an effect that the second molded resin material flows into the cavity of the primary molded product formed by extruding the molding pin and a shaft-shaped secondary molded product is molded.

本願発明に係る成形装置は、前記成形ピンを二次成形凹部内に挿脱させるアクチュエータが設けられている。本願発明に係る成形装置は、二次成形凹部内に成形ピンが挿入された状態で一次成形凹部内に第１の成形樹脂素材を射出して流し込むと、成形ピンの周りに一次成形物が成形される。次にアクチュエータを作動させて、成形ピンを二次成形凹部内から引き抜くと、一次成形物に空洞が形成され、二次成形凹部内に第２の成形樹脂素材を射出して流し込むと、一次成形物の空洞に第２の成形樹脂素材が流入して軸状の二次成形物が成形されるという効果がある。 The molding device according to the present invention is provided with an actuator for inserting and removing the molding pin into and from the secondary molding recess. In the molding apparatus according to the present invention, when the first molding resin material is injected and poured into the primary molding recess with the molding pin inserted in the secondary molding recess, the primary molded product is molded around the molding pin. Is done. Next, when the actuator is operated and the molding pin is pulled out from the secondary molding recess, a cavity is formed in the primary molding, and when the second molding resin material is injected and poured into the secondary molding recess, the primary molding is performed. There is an effect that the second molding resin material flows into the cavity of the article and a shaft-like secondary molded article is molded.

本願発明に係る成形装置は、前記二次成形凹部の両側に、軸状の二次成形物の両側に鍔部を成形する鍔成形凹部が形成されているので、先に成形した成形物を後から成形した成形物に対して可動可能且つ脱離不能に取り付けた多色成形物を成形することができるという効果がある。 In the molding apparatus according to the present invention, since the flange forming recess for forming the flange on both sides of the shaft-shaped secondary molded product is formed on both sides of the secondary molded recess, There is an effect that it is possible to mold a multicolor molded product that is movable and non-detachable with respect to the molded product molded from the above.

本願発明に係る成形物の成形方法は、先に成形した成形物内に、後から成形した成形物を挿設した多色成形物を成形することができるという効果がある。また、本願発明に係る成形方法は、一つの成形型で多色成形物を成形することができるので、構造が複雑で組立が面倒な移送手段が不要で、安価な成形装置にすることができるという効果がある。また、本願発明に係る成形方法は、一次成形物を二次成形型に移送する時間がない分、成形サイクルを短くすることができるという効果がある。 The molding method of the molded product according to the present invention has an effect that a multicolor molded product in which a molded product molded later is inserted into the molded product molded earlier can be molded. In addition, since the molding method according to the present invention can mold a multi-color molded product with a single mold, it is possible to provide an inexpensive molding apparatus that does not require a transfer means that has a complicated structure and is difficult to assemble. There is an effect. Further, the molding method according to the present invention has an effect that the molding cycle can be shortened because there is no time to transfer the primary molded product to the secondary molding die.

本願発明に係る成形物は、先に第１の成形樹脂素材によって成形された一次成形物の空洞内に、後から第１の成形樹脂素材よりも融点の低い第２の成形樹脂素材によって成形された軸状の二次成形物が挿通され、二次成形物の周囲に一次成形物が可動可能に取り付けられ、安価且つ短時間で成形することができるという効果がある。 The molded product according to the present invention is molded into the cavity of the primary molded product previously molded from the first molded resin material by the second molded resin material having a melting point lower than that of the first molded resin material. The shaft-shaped secondary molded product is inserted, the primary molded product is movably attached around the secondary molded product, and there is an effect that it can be molded at low cost and in a short time.

本願発明に係る成形物は、さらに、軸状の二次成形物の両側に鍔部が成形されているので、一次成形物が外れるのを阻止することができるという効果がある。 The molded product according to the present invention further has an effect that the primary molded product can be prevented from coming off because the flange portions are molded on both sides of the shaft-shaped secondary molded product.

本願発明に係る成形装置の実施の形態を図１乃至図７に基づいて説明する。図１及び図２は、本願発明に係る成形装置の基本的な動作を説明する説明図である。図３は、本願発明に係る成形装置の全体側面図である。図４は、本願発明に係る成形装置の上面図である。図５は、本願発明に係る成形装置の要部側面図である。図６は、本願発明に係る成形装置の他の実施の形態を示す上面図である。図７は、本願発明に係る成形物の実施の形態を示す平面図である。 An embodiment of a molding apparatus according to the present invention will be described with reference to FIGS. 1 and 2 are explanatory views for explaining the basic operation of the molding apparatus according to the present invention. FIG. 3 is an overall side view of the molding apparatus according to the present invention. FIG. 4 is a top view of the molding apparatus according to the present invention. FIG. 5 is a side view of an essential part of the molding apparatus according to the present invention. FIG. 6 is a top view showing another embodiment of the molding apparatus according to the present invention. FIG. 7 is a plan view showing an embodiment of a molded product according to the present invention.

図１、２を参照して本願発明に係る成形装置の原理について説明する。成形装置１は、第１の金型１０と第２の金型６０とからなり、前記第１の金型１０と前記第２の金型６０が接合することによって成形型８０，８３が形成される。前記成形型８０，８３には、軸状の二次成形物Ｐを成形する二次成形凹部９１，９５と、二次成形物Ｐの周囲に一次成形物Ｒを成形する一次成形凹部９４，９８と、二次成形凹部９１，９５内に挿脱可能に設けられた成形ピン１０３，１３３とが設けられている。 The principle of the molding apparatus according to the present invention will be described with reference to FIGS. The molding apparatus 1 includes a first mold 10 and a second mold 60, and the molds 80 and 83 are formed by joining the first mold 10 and the second mold 60. The The molding dies 80 and 83 include secondary molding recesses 91 and 95 that mold the shaft-shaped secondary molding P, and primary molding recesses 94 and 98 that mold the primary molding R around the secondary molding P. And forming pins 103 and 133 that are detachably provided in the secondary forming recesses 91 and 95 are provided.

前記成形型８０，８３には、前記成形ピン１０３，１３３を二次成形凹部９１，９５の挿入方向に付勢する弾性部材１２０が設けられている。又は、前記成形型８０，８３には、弾性部材１２０に代えて、前記成形ピン１０３，１３３を二次成形凹部９１，９５内に挿脱させるアクチュエータ１５０が設けられていても構わない。 The molding dies 80 and 83 are provided with elastic members 120 that urge the molding pins 103 and 133 in the insertion direction of the secondary molding recesses 91 and 95. Alternatively, the molds 80 and 83 may be provided with an actuator 150 for inserting and removing the molding pins 103 and 133 into and from the secondary molding recesses 91 and 95 in place of the elastic member 120.

前記成形型８０，８３には、前記一次成形凹部９４，９８に一次成形樹脂素材Ａを流し込む一次ランナー溝３７，４１，６８，７２と、前記二次成形凹部９１，９５に二次成形樹脂素材Ｂを流し込む二次ランナー溝３８，４２，６９，７３とが設けられている。 In the molds 80 and 83, primary runner grooves 37, 41, 68, and 72 into which the primary molding resin material A is poured into the primary molding recesses 94 and 98, and secondary molding resin material in the secondary molding recesses 91 and 95, respectively. Secondary runner grooves 38, 42, 69, and 73 into which B is poured are provided.

前記成形型８０，８３には、前記一次成形凹部９４，９８に一次成形樹脂素材Ａを流し込む一次ランナー溝３７，４１，６８，７２と、前記二次成形凹部９１，９５に、前記成形ピン１０３，１３３を弾性部材１２０の弾性に抗して二次成形凹部９１，９５から押し出しながら二次成形樹脂素材Ｂを流し込む二次ランナー溝３８，４２，６９，７３とが設けられている。前記二次成形凹部９１，９５の両側には、軸状の二次成形物Ｐの両側に鍔部Ｑを成形する鍔成形凹部９２，９３，９６，９７が形成されている。 In the molds 80 and 83, primary runner grooves 37, 41, 68 and 72 for pouring the primary molding resin material A into the primary molding recesses 94 and 98, and the molding pin 103 in the secondary molding recesses 91 and 95. , 133 are pushed out from the secondary molding recesses 91, 95 against the elasticity of the elastic member 120, and secondary runner grooves 38, 42, 69, 73 into which the secondary molding resin material B is poured are provided. On both sides of the secondary molding recesses 91 and 95, flange forming recesses 92, 93, 96 and 97 for forming the flange portions Q are formed on both sides of the shaft-shaped secondary molded product P.

成形物Ｓの成形方法は、成形ピン１０３，１３３が弾性部材１２０により挿入方向に付勢され内部に挿入された状態で、成形空間９４，９８に第１の成形樹脂素材Ａを射出して成形ピン１０３，１３３の周囲に一次成形物Ｒを成形する第１の成形工程と、第１の成形樹脂素材Ａの融点より低い融点の第２の成形樹脂素材Ｂを成形空間９４，９８に射出し、第２の成形樹脂素材Ｂの流入圧力により成形ピン１０３，１３３を押し出しながら、成形ピン１０３，１３３が押し出されることによって形成される一次成形物Ｒの空洞Ｒ１に、二次成形物Ｐを成形し、二次成形物Ｐの周囲に一次成形物Ｒを可動可能にした成形物Ｓを成形する第２の成形工程とからなる。 The molding S is molded by injecting the first molding resin material A into the molding spaces 94 and 98 in a state where the molding pins 103 and 133 are urged in the insertion direction by the elastic member 120 and inserted therein. A first molding step for molding the primary molded product R around the pins 103 and 133, and a second molding resin material B having a melting point lower than the melting point of the first molding resin material A are injected into the molding spaces 94 and 98. The secondary molding P is molded into the cavity R1 of the primary molding R formed by extruding the molding pins 103 and 133 while the molding pins 103 and 133 are extruded by the inflow pressure of the second molding resin material B. And a second molding step of molding a molded product S in which the primary molded product R is movable around the secondary molded product P.

成形物Ｓの成形方法は、成形ピン１０３，１３３がアクチュエータ１５０により内部に挿入された成形空間９４，９８に第１の成形樹脂素材Ａを射出して成形ピン１０３，１３３の周囲に一次成形物Ｒを成形する第１の成形工程と、アクチュエータ１５０により成形ピン１０３，１３３を一次成形物Ｒから引き抜き、一次成形物Ｒに空洞Ｒ１を形成する第２の成形工程と、一次成形物Ｒの空洞Ｒ１に、第１の成形樹脂素材Ａの融点より低い融点の第２の成形樹脂素材Ｂを射出して二次成形物Ｐを成形し、二次成形物Ｐの周囲に一次成形物Ｒを可動可能にした成形物Ｓを成形する第３の成形工程とからなる。 The molded product S is molded by injecting the first molded resin material A into the molding spaces 94 and 98 in which the molding pins 103 and 133 are inserted by the actuator 150 to form the primary molded product around the molding pins 103 and 133. A first molding step of molding R, a second molding step of drawing the molding pins 103 and 133 from the primary molded product R by the actuator 150 to form a cavity R1 in the primary molded product R, and a cavity of the primary molded product R A second molded resin material B having a melting point lower than the melting point of the first molded resin material A is injected into R1 to form a secondary molded product P, and the primary molded product R is movable around the secondary molded product P. And a third molding step of molding the molded product S made possible.

成形物Ｓは、図７に示すように、軸状の二次成形物Ｐと、二次成形物Ｐの周囲に可動可能に取り付けられた一次成形物Ｒとからなる。一次成形物Ｒは、第１の成形樹脂素材Ａに
よって成形され、内部に空洞Ｒ１が形成されている。二次成形物Ｐは、第１の成形樹脂素材Ａよりも融点の低い第２の成形樹脂素材Ｂによって軸状に成形され、一次成形物Ｒの空洞Ｒ１に挿通されている。二次成形物Ｐの両側には、二次成形物Ｐから一次成形物Ｒが外れるのを阻止する鍔部Ｑが成形されている。 As shown in FIG. 7, the molded product S includes a shaft-shaped secondary molded product P and a primary molded product R that is movably attached around the secondary molded product P. The primary molded product R is molded by the first molded resin material A, and a cavity R1 is formed inside. The secondary molded product P is molded into a shaft shape by the second molded resin material B having a melting point lower than that of the first molded resin material A, and is inserted into the cavity R1 of the primary molded product R. On both sides of the secondary molded product P, flanges Q that prevent the primary molded product R from being detached from the secondary molded product P are formed.

さらに成形装置について詳細に説明する。図３に示すように、成形装置１は、射出成形装置の移動側に取付けられる移動金型（第１の金型）１０と、射出成形装置の固定側に取り付けられる固定金型（第２の金型）６０とからなっている。 Further, the molding apparatus will be described in detail. As shown in FIG. 3, the molding apparatus 1 includes a movable mold (first mold) 10 attached to the moving side of the injection molding apparatus and a fixed mold (second mold) attached to the fixed side of the injection molding apparatus. Mold) 60.

移動金型（第１の金型）１０は、前方に配置された成形型台１１と、後方に配置された基台１２と、成形型台１１と基台１２間に設けられたブロック体１３とからなっている。移動金型（第１の金型）１０は、ブロック体１３が成形型台１１と基台１２の間の上部と下部に配置され、成形型台１１と基台１２の間に空室１５が形成されている。空室１５内には、摺動台１６、１７が前後方向に摺動可能に配置されている。 The movable mold (first mold) 10 includes a mold base 11 disposed at the front, a base 12 disposed at the rear, and a block body 13 provided between the mold base 11 and the base 12. It is made up of. In the movable mold (first mold) 10, the block body 13 is arranged at the upper part and the lower part between the mold base 11 and the base 12, and an empty space 15 is formed between the mold base 11 and the base 12. Is formed. In the vacant chamber 15, slide bases 16 and 17 are arranged so as to be slidable in the front-rear direction.

前方の摺動台１６には、第１の射出側ランナーＭ１及び第２の射出側ランナーＮ１を前方に突き出す突き出しピン１９が設けられ、後方の摺動台１７には、第１の先ランナーＭ２、第２の先ランナーＭ３、第１の後ランナーＮ２、第２の後ランナーＮ３を前方に突き出す突き出しピン２０が設けられている。突き出しピン１９及び突き出しピン２０は、初期状態において、先端が成形型台１１から突出しないようになっている。この摺動台１６、１７は、空室１５内に設けられた図示しない油圧シリンダの駆動軸の先端に取り付けられ、駆動軸によって前後方向に移動させられるようになっている。 The front slide base 16 is provided with a protrusion pin 19 that projects the first injection side runner M1 and the second injection side runner N1 forward, and the rear slide base 17 has a first leading runner M2. The protrusion pin 20 which protrudes the 2nd front runner M3, the 1st back runner N2, and the 2nd back runner N3 ahead is provided. In the initial state, the protruding pins 19 and the protruding pins 20 do not protrude from the mold base 11. The slide bases 16 and 17 are attached to the tip of a drive shaft of a hydraulic cylinder (not shown) provided in the empty chamber 15 and are moved in the front-rear direction by the drive shaft.

図４，５に示すように、移動金型（第１の金型）１０の表面（接合面）、即ち成形型台１１の表面（接合面）２５には、第１の位置決め凹部２６と第２の位置決め凹部２７が形成されている。第１の位置決め凹部２６内には、第１の移動側駒体３１と第１の軸受け駒体１０１がネジ等により固定して取り付けられている。第２の位置決め凹部２７内には、第２の移動側駒体３２と第２の軸受け駒体１３１がネジ等により固定して取り付けられている。 As shown in FIGS. 4 and 5, the first positioning recess 26 and the first positioning recess 26 are formed on the surface (bonding surface) of the moving mold (first mold) 10, that is, on the surface (bonding surface) 25 of the mold base 11. Two positioning recesses 27 are formed. In the first positioning recess 26, the first moving piece 31 and the first bearing piece 101 are fixedly attached with screws or the like. In the second positioning recess 27, the second moving side piece 32 and the second bearing piece 131 are fixedly attached with screws or the like.

第１の移動側駒体３１及び第２の移動側駒体３２は、表面３１ａ、３２ａが成形型台１１の表面（接合面）２５と略同一平面となるように、移動金型（第１の金型）１０に取り付けられている。第１の移動側駒体３１の表面３１ａには、第１の成形凹部８１を構成する第１の移動側成形凹部３６と第１の先ランナー溝３７及び第１の後ランナー溝３８が形成されている。 The first moving side piece 31 and the second moving side piece 32 have a moving mold (first shape) such that the surfaces 31a and 32a are substantially flush with the surface (joining surface) 25 of the mold base 11. The metal mold 10) is attached. On the surface 31a of the first moving-side piece 31, a first moving-side forming recess 36, a first front runner groove 37, and a first rear runner groove 38 constituting the first forming recess 81 are formed. ing.

第２の移動側駒体３２の表面３２ａには、第２の成形凹部８５を構成する第２の移動側成形凹部３９と第２の先ランナー溝４１及び第２の後ランナー溝４２が形成されている。移動金型（第１の金型）１０の表面（接合面）、即ち成形型台１１の表面（接合面）２５には、第１、２の先ランナー溝３７，４１と連通し、第１の移動側成形凹部３６及び第２の移動側成形凹部３９内に第１の成形樹脂素材Ａを流し込む第１の射出側ランナー溝４３が形成されている。 On the surface 32a of the second moving side piece 32, a second moving side forming recess 39, a second front runner groove 41, and a second rear runner groove 42 constituting the second forming recess 85 are formed. ing. The surface (joint surface) of the movable mold (first mold) 10, that is, the surface (joint surface) 25 of the mold base 11 communicates with the first and second leading runner grooves 37 and 41, and the first The first injection side runner groove 43 into which the first molding resin material A is poured is formed in the movement side molding recess 36 and the second movement side molding recess 39.

また、移動金型（第１の金型）１０の表面（接合面）、即ち成形型台１１の表面（接合面）２５には、第１、２の後ランナー溝３８，４２と連通し、第１の移動側成形凹部３６及び第２の移動側成形凹部３９内に第２の成形樹脂素材Ｂを流し込む第２の射出側ランナー溝４５が形成されている。第１の後ランナー溝３８，第２の後ランナー溝４２の所定箇所には、突き出しピン１９用の透孔が形成されている。第１の先ランナー溝３７，第２の先ランナー溝４１の所定箇所には、突き出しピン２０用の透孔が形成されている。 In addition, the surface (joint surface) of the movable mold (first mold) 10, that is, the surface (joint surface) 25 of the mold base 11 communicates with the first and second rear runner grooves 38 and 42. A second injection-side runner groove 45 into which the second molding resin material B is poured is formed in the first moving-side molding recess 36 and the second moving-side molding recess 39. A through hole for the protruding pin 19 is formed in a predetermined portion of the first rear runner groove 38 and the second rear runner groove 42. A through hole for the protruding pin 20 is formed at a predetermined position of the first front runner groove 37 and the second front runner groove 41.

図４，５に示すように、固定金型（第２の金型）６０の表面（接合面）６１には、第１の位置決め凹部６２と第２の位置決め凹部６３が形成されている。第１の位置決め凹部６２内には、第１の固定側駒体６５がネジ等により固定して取り付けられ、前記第１の軸受け駒体１０１を嵌合するようになっている。第２の位置決め凹部６３内には、第２の固定側駒体６６がネジ等により固定して取り付けられ、前記第２の軸受け駒体１３１を嵌合するようになっている。 As shown in FIGS. 4 and 5, a first positioning recess 62 and a second positioning recess 63 are formed on the surface (bonding surface) 61 of the fixed mold (second mold) 60. In the first positioning recess 62, a first fixed-side piece 65 is fixedly attached with a screw or the like, and the first bearing piece 101 is fitted therein. In the second positioning recess 63, a second fixed-side piece 66 is fixedly attached with a screw or the like, and the second bearing piece 131 is fitted therein.

第１の固定側駒体６５及び第２の固定側駒体６６は、表面６５ａ，６６ａが固定金型（第２の金型）６０の表面（接合面）６１と略同一平面となるように、固定金型（第２の金型）６０に取り付けられている。第１の固定側駒体６５の表面６５ａには、第１の成形凹部８１を構成する第１の固定側成形凹部６７と第１の先ランナー溝６８及び第１の後ランナー溝６９が形成されている。 The first fixed side piece 65 and the second fixed side piece 66 have surfaces 65a and 66a that are substantially flush with the surface (joint surface) 61 of the fixed mold (second mold) 60. The fixed mold (second mold) 60 is attached. On the surface 65a of the first fixed-side piece 65, a first fixed-side formed recess 67, a first front runner groove 68, and a first rear runner groove 69 constituting the first formed recess 81 are formed. ing.

第２の固定側駒体６６の表面６６ａには、第２の成形凹部８５を構成する第２の固定側成形凹部７１と第２の先ランナー溝７２及び第２の後ランナー溝７３が形成されている。固定金型（第２の金型）６０の表面（接合面）６１には、第１、２の先ランナー溝６８，７２と連通し、第１の固定側成形凹部６７及び第２の固定側成形凹部７１内に第１の成形樹脂素材Ａを流し込む第１の射出側ランナー溝７５が形成されている。 On the surface 66a of the second fixed side piece 66, a second fixed side forming recess 71, a second front runner groove 72, and a second rear runner groove 73 constituting the second forming recess 85 are formed. ing. The surface (joining surface) 61 of the fixed mold (second mold) 60 communicates with the first and second leading runner grooves 68 and 72, and the first fixed side molding recess 67 and the second fixed side. A first injection-side runner groove 75 into which the first molding resin material A is poured into the molding recess 71 is formed.

また、固定金型（第２の金型）６０の表面（接合面）６１には、第１、２の後ランナー溝６９，７３と連通し、第１の固定側成形凹部６７及び第２の固定側成形凹部７１内に第２の成形樹脂素材Ｂを流し込む第２の射出側ランナー溝７６が形成されている。移動金型（第１の金型）１０の表面２５が固定金型（第２の金型）６０の表面６１に接合すると、第１の移動側駒体３１の表面３１ａが第１の固定側駒体６５の表面６５ａと接合し、第２の移動側駒体３２の表面３２ａが第２の固定側駒体６６の表面６６ａと接合する。 In addition, the surface (joint surface) 61 of the fixed mold (second mold) 60 communicates with the first and second rear runner grooves 69 and 73, and the first fixed-side molding recess 67 and the second A second injection-side runner groove 76 into which the second molding resin material B is poured into the fixed-side molding recess 71 is formed. When the surface 25 of the moving mold (first mold) 10 is joined to the surface 61 of the fixed mold (second mold) 60, the surface 31a of the first moving-side piece 31 becomes the first fixed side. The surface 65 a of the second moving side piece 32 is joined to the surface 66 a of the second fixed side piece 66.

第１の移動側駒体３１と第１の固定側駒体６５が接合すると第１の成形型８０が形成される。第１の成形型８０は、第１の移動側成形凹部３６と第１の固定側成形凹部６７が接合することによって形成される第１の成形凹部８１を有する。第２の移動側駒体３２と第２の固定側駒体６６が接合すると第２の成形型８３が形成される。第２の成形型８３は、第２の移動側成形凹部３９と第２の固定側成形凹部７１が接合することによって形成される第２の成形凹部８５を有する。 When the first moving side piece 31 and the first fixed side piece 65 are joined, a first mold 80 is formed. The first mold 80 has a first molding recess 81 formed by joining the first moving-side molding recess 36 and the first fixed-side molding recess 67. When the second moving side piece 32 and the second fixed side piece 66 are joined, a second mold 83 is formed. The second molding die 83 has a second molding recess 85 formed by joining the second moving-side molding recess 39 and the second fixed-side molding recess 71.

また移動金型１０側の第１の先ランナー溝３７と固定金型６０側の第１の先ランナー溝６８が接合することによって第１の先ランナー路８６が形成される。また移動金型１０側の第１の後ランナー溝３８と固定金型６０側の第１の後ランナー溝６９が接合することによって第１の後ランナー路８７が形成される。また移動金型１０側の第２の先ランナー溝４１と固定金型６０側の第２の先ランナー溝７２が接合することによって第２の先ランナー路８８が形成される。 Further, the first front runner path 86 is formed by joining the first front runner groove 37 on the moving mold 10 side and the first front runner groove 68 on the stationary mold 60 side. The first rear runner path 87 is formed by joining the first rear runner groove 38 on the movable mold 10 side and the first rear runner groove 69 on the stationary mold 60 side. Further, the second leading runner path 88 is formed by joining the second leading runner groove 41 on the moving mold 10 side and the second leading runner groove 72 on the fixed mold 60 side.

また移動金型１０側の第２の後ランナー溝４２と固定金型６０側の第２の後ランナー溝７３が接合することによって第２の後ランナー路８９が形成される。移動金型１０側の第１の射出側ランナー溝４３と固定金型６０側の第１の射出側ランナー溝７５が接合することによって第１の射出側ランナー路５１が形成される。移動金型１０側の第２の射出側ランナー溝４５と固定金型６０側の第２の射出側ランナー溝７６が接合することによって第２の射出側ランナー路５２が形成される。 The second rear runner groove 89 on the movable mold 10 side and the second rear runner groove 73 on the stationary mold 60 side are joined to form a second rear runner path 89. A first injection-side runner path 51 is formed by joining the first injection-side runner groove 43 on the movable mold 10 side and the first injection-side runner groove 75 on the fixed mold 60 side. The second injection-side runner path 52 is formed by joining the second injection-side runner groove 45 on the moving mold 10 side and the second injection-side runner groove 76 on the fixed mold 60 side.

前記第１の成形凹部８１は、第１の成形型８０内に複数並設され、図１，２に示すように、軸状の成形物Ｐを成形する軸成形凹部９１と、軸状の成形物Ｐの両端側に鍔部Ｑを成形する鍔成形凹部９２，９３と、軸状の成形物Ｐの周りに環状の成形物Ｒを成形する環状
成形凹部９４とからなる。軸成形凹部９１は、円軸状に細長く形成され、長手方向の一端が第１の後ランナー路８７と連通している。また、軸成形凹部９１は、長手方向の他端に開口９１ａが形成され、当該開口９１ａから成形ピン１０３・・が出没するようになっている。環状成形凹部９４は、第１の先ランナー路８６と連通している。 A plurality of the first molding recesses 81 are arranged in parallel in the first molding die 80, and as shown in FIGS. 1 and 2, a shaft molding recess 91 for molding the shaft-shaped molded product P, and a shaft-shaped molding. It consists of flange forming recesses 92 and 93 for forming the flange portion Q on both ends of the object P, and an annular formed recess 94 for forming an annular formed product R around the shaft-shaped formed product P. The shaft forming recess 91 is formed in an elongated shape in a circular axis shape, and one end in the longitudinal direction communicates with the first rear runner path 87. In addition, the shaft forming recess 91 has an opening 91a formed at the other end in the longitudinal direction, and the forming pins 103.. The annular molded recess 94 communicates with the first front runner path 86.

前記第２の成形凹部８５は、第１の成形凹部８１と同様に、第２の成形型８３内に複数並設され、軸状の成形物Ｐを成形する軸成形凹部９５と、軸状の成形物Ｐの両端側に鍔部Ｑを成形する鍔成形凹部９６，９７と、軸状の成形物Ｐの周りに環状の成形物Ｒを成形する環状成形凹部９８とからなる。軸成形凹部９５は、円軸状に細長く形成され、長手方向の一端が第２の後ランナー路８９と連通している。また、軸成形凹部９５は、長手方向の他端に開口９５ａが形成され、当該開口９５ａから成形ピン１３３・・が出没するようになっている。環状成形凹部９８は、第２の先ランナー路８８と連通している。 Similar to the first molding recess 81, a plurality of the second molding recesses 85 are arranged in parallel in the second molding die 83, and a shaft molding recess 95 for molding the shaft-shaped molded product P, and a shaft-shaped recess 95. It consists of ridge-shaped concave portions 96 and 97 for forming the flange portion Q on both ends of the molded product P, and an annular molded concave portion 98 for forming an annular molded product R around the shaft-shaped molded product P. The shaft-forming recess 95 is formed in an elongated shape in a circular axis shape, and one end in the longitudinal direction communicates with the second rear runner path 89. Further, the shaft forming recess 95 has an opening 95a formed at the other end in the longitudinal direction, and the forming pins 133. The annular molded recess 98 communicates with the second front runner path 88.

第１の軸受け駒体１０１は、前記第１の成形型８０の複数の軸成形凹部９１内にそれぞれ出没する長さの異なる複数の成形ピン１０３・・が長手方向に摺動可能に設けられている。成形ピン１０３・・は、円軸状に形成され、略中間部にフランジ１０４が形成されている。第１の軸受け駒体１０１は、前部ブロック片１１１と、中間部ブロック片１１２と、後部ブロック片１１３とで構成されている。 The first bearing piece 101 is provided with a plurality of molding pins 103,... Having different lengths protruding and retracting in a plurality of shaft molding recesses 91 of the first molding die 80 so as to be slidable in the longitudinal direction. Yes. The forming pins 103 are formed in a circular axis shape, and a flange 104 is formed at a substantially middle portion. The first bearing piece 101 includes a front block piece 111, an intermediate block piece 112, and a rear block piece 113.

前部ブロック片１１１と後部ブロック片１１３には、成形ピン１０３・・を案内する複数の案内孔１１５，１１６が平行に形成され、中間部ブロック片１１２には、フランジ１０４を収容する複数の収容孔１１７・・が形成されている。従って、成形ピン１０３・・は、フランジ１０４が前部ブロック片１１１に当接するまで、第１の軸受け駒体１０１から突出し、フランジ１０４が後部ブロック片１１３に当接するまで、第１の軸受け駒体１０１内に没入する。 The front block piece 111 and the rear block piece 113 are formed with a plurality of guide holes 115 and 116 for guiding the forming pins 103..., And the intermediate block piece 112 contains a plurality of housings for housing the flanges 104. Holes 117 are formed. Therefore, the forming pins 103... Protrude from the first bearing piece 101 until the flange 104 abuts on the front block piece 111, and until the flange 104 abuts on the rear block piece 113. Immerse yourself in 101.

成形ピン１０３・・は、先端１０５が軸成形凹部９１の開口９１ａから鍔成形凹部９２まで突出し、次に先端１０５が鍔成形凹部９３から外れて開口９１ａ内に没入するまで移動する。成形ピン１０３・・は、初期状態において、スプリング等の弾性部材１２０によって付勢され、フランジ１０４が前部ブロック片１１１に当接し、先端１０５が軸成形凹部９１の鍔成形凹部９２内まで突出している。弾性部材１２０は、後部ブロック片１１３に形成された収容穴１２１に一方側が収容され、他端が成形ピン１０３のフランジ１０４に当接し、成形ピン１０３を付勢している。 The forming pins 103... Move until the tip 105 protrudes from the opening 91a of the shaft forming recess 91 to the flange forming recess 92, and then the tip 105 is detached from the flange forming recess 93 and enters the opening 91a. In the initial state, the forming pins 103 are urged by an elastic member 120 such as a spring, the flange 104 abuts against the front block piece 111, and the tip 105 protrudes into the flange forming recess 92 of the shaft forming recess 91. Yes. One side of the elastic member 120 is accommodated in the accommodation hole 121 formed in the rear block piece 113, and the other end abuts on the flange 104 of the molding pin 103 to urge the molding pin 103.

第２の軸受け駒体１３１は、前記第２の成形型８３の複数の軸成形凹部９５内にそれぞれ出没する長さの異なる複数の成形ピン１３３・・が長手方向に摺動可能に設けられている。成形ピン１３３・・は、円軸状に形成され、略中間部にフランジ１３４が形成されている。第２の軸受け駒体１３１は、前部ブロック片１４１と、中間部ブロック片１４２と、後部ブロック片１４３とで構成されている。 The second bearing piece 131 is provided with a plurality of molding pins 133... Having different lengths protruding and retracting in the plurality of shaft molding recesses 95 of the second molding die 83 slidably in the longitudinal direction. Yes. The forming pins 133... Are formed in a circular shaft shape, and a flange 134 is formed in a substantially middle portion. The second bearing piece 131 includes a front block piece 141, an intermediate block piece 142, and a rear block piece 143.

前部ブロック片１４１と後部ブロック片１４３には、成形ピン１３３・・を案内する複数の案内孔１４５，１４６が平行に形成され、中間部ブロック片１４２には、フランジ１３４を収容する複数の収容孔１４７・・が形成されている。従って、成形ピン１３３・・は、フランジ１３４が前部ブロック片１４１に当接するまで、第２の軸受け駒体１３１から突出し、フランジ１３４が後部ブロック片１４３に当接するまで、第２の軸受け駒体１３１内に没入する。 The front block piece 141 and the rear block piece 143 are formed in parallel with a plurality of guide holes 145 and 146 for guiding the forming pins 133... And the intermediate block piece 142 has a plurality of housings for housing the flanges 134. Holes 147... Are formed. Therefore, the forming pins 133... Protrude from the second bearing piece 131 until the flange 134 abuts on the front block piece 141, and the second bearing piece body until the flange 134 abuts on the rear block piece 143. Immerse yourself in 131.

成形ピン１３３・・は、先端１３５が軸成形凹部９５の開口９５ａから鍔成形凹部９６まで突出し、次に先端１３５が鍔成形凹部９７から外れて開口９１ａ内に没入するまで移動する。成形ピン１３３・・は、初期状態において、スプリング等の弾性部材１２０によ
って付勢され、フランジ１３４が前部ブロック片１４１に当接し、先端１３５が軸成形凹部９５の鍔成形凹部９６内まで突出している。弾性部材１２０は、後部ブロック片１４３に形成された収容穴１４８に一方側が収容され、他端が成形ピン１３３のフランジ１３４に当接し、成形ピン１３３を付勢している。 The forming pins 133... Move until the tip 135 protrudes from the opening 95a of the shaft forming recess 95 to the flange forming recess 96, and then the tip 135 is detached from the flange forming recess 97 and enters the opening 91a. In the initial state, the forming pins 133 are energized by the elastic member 120 such as a spring, the flange 134 abuts against the front block piece 141, and the tip 135 protrudes into the flange forming recess 96 of the shaft forming recess 95. Yes. One side of the elastic member 120 is accommodated in the accommodation hole 148 formed in the rear block piece 143, the other end abuts on the flange 134 of the molding pin 133, and biases the molding pin 133.

成形装置１は、上記構成を有し、射出成形装置の移動側に移動金型（第１の金型）１０を固定して取り付け、固定側に固定金型（第２の金型）６０を固定して取り付けると、移動金型（第１の金型）１０の表面（接合面）２５と固定金型（第２の金型）６０の表面（接合面）６１が略垂直となる。 The molding apparatus 1 has the above-described configuration, and a movable mold (first mold) 10 is fixedly attached to the moving side of the injection molding apparatus, and a fixed mold (second mold) 60 is fixed to the fixed side. When fixed and attached, the surface (bonding surface) 25 of the movable mold (first mold) 10 and the surface (bonding surface) 61 of the fixed mold (second mold) 60 become substantially vertical.

射出成形装置を駆動し、移動金型（第１の金型）１０の表面（接合面）２５を固定金型（第２の金型）６０の表面（接合面）６１に接合する。第１の移動側駒体３１と第１の固定側駒体６５が接合して第１の成形型８０が形成され、第２の移動側駒体３２と第２の固定側駒体６６が接合して第２の成形型８３が形成される。第１の成形型８０内には、第１の移動側成形凹部３６と第１の固定側成形凹部６７が重なって第１の成形凹部８１が形成される。また、第２の成形型８３内には、第２の移動側成形凹部３９と第２の固定側成形凹部７１が重なって第２の成形凹部８５が形成される。 The injection molding apparatus is driven to join the surface (joint surface) 25 of the movable mold (first mold) 10 to the surface (joint surface) 61 of the fixed mold (second mold) 60. The first moving side piece 31 and the first fixed side piece 65 are joined to form the first mold 80, and the second moving side piece 32 and the second fixed side piece 66 are joined. Thus, the second mold 83 is formed. In the first molding die 80, the first moving concave portion 36 and the first fixed concave portion 67 overlap to form a first concave portion 81. Further, in the second molding die 83, the second moving concave portion 39 and the second fixed concave portion 71 are overlapped to form a second concave portion 85.

さらに、移動金型１０側の第１の先ランナー溝３７と固定金型６０側の第１の先ランナー溝６８が重なって第１の先ランナー路８６が形成され、移動金型１０側の第１の後ランナー溝３８と固定金型６０側の第１の後ランナー溝６９が重なって第１の後ランナー路８７が形成される。また移動金型１０側の第２の先ランナー溝４１と固定金型６０側の第２の先ランナー溝７２が重なって第２の先ランナー路８８が形成され、移動金型１０側の第２の後ランナー溝４２と固定金型６０側の第２の後ランナー溝７３が重なって第２の後ランナー路８９が形成される。 Furthermore, the first front runner groove 37 on the moving mold 10 side and the first front runner groove 68 on the stationary mold 60 side overlap to form a first front runner path 86, and the first front runner path 86 on the moving mold 10 side is formed. The first rear runner groove 38 and the first rear runner groove 69 on the fixed mold 60 side overlap to form a first rear runner path 87. The second front runner groove 41 on the moving mold 10 side and the second front runner groove 72 on the stationary mold 60 side overlap to form a second front runner path 88, and the second front runner path 88 is formed on the moving mold 10 side. The second rear runner path 89 is formed by overlapping the rear runner groove 42 and the second rear runner groove 73 on the stationary mold 60 side.

移動金型１０側の第１の射出側ランナー溝４３と固定金型６０側の第１の射出側ランナー溝７５が重なって第１の射出側ランナー路５１が形成され、移動金型１０側の第２の射出側ランナー溝４５と固定金型６０側の第２の射出側ランナー溝７６が重なって第２の射出側ランナー路５２が形成される。 The first injection side runner groove 43 on the moving mold 10 side and the first injection side runner groove 75 on the stationary mold 60 side overlap to form the first injection side runner path 51, and The second injection-side runner groove 52 and the second injection-side runner groove 76 on the stationary mold 60 side overlap to form the second injection-side runner path 52.

図示しない射出ユニットから第１の射出側ランナー路５１に第１の成形樹脂素材Ａを射出すると、この第１の成形樹脂素材Ａは、第１の先ランナー路８６を通って第１の成形型８０の第１の成形凹部８１内に流入し、さらに第２の先ランナー路８８を通って第２の成形型８３の第２の成形凹部８５内に流入する。第１の成形樹脂素材Ａは、第１の成形型８０内においては、成形ピン１０３の周囲の環状成形凹部９５に流れ込み環状の成形物Ｒが成形される。第１の成形樹脂素材Ａは、第２の成形型８３内においては、成形ピン１３３の周囲の環状成形凹部９８に流れ込み環状の成形物Ｒが成形される（第１の成形工程）。 When the first molding resin material A is injected into the first injection-side runner path 51 from an injection unit (not shown), the first molding resin material A passes through the first leading runner path 86 and the first molding die. It flows into the first molding recess 81 of 80, and further flows into the second molding recess 85 of the second molding die 83 through the second leading runner path 88. In the first molding die 80, the first molding resin material A flows into the annular molding recess 95 around the molding pin 103, and the annular molding R is molded. In the second molding die 83, the first molding resin material A flows into the annular molding recess 98 around the molding pin 133, and the annular molding R is molded (first molding step).

図示しない射出ユニットから第２の射出側ランナー路５２に第２の成形樹脂素材Ｂを射出すると、この第２の成形樹脂素材Ｂは、第１の後ランナー路８７を通って第１の成形型８０の第１の成形凹部８１内に流入し、さらに第２の後ランナー路８９を通って第２の成形型８３の第２の成形凹部８５内に流入する。第２の成形樹脂素材Ｂは、これの融点が第１の成形樹脂素材Ａの融点より低くなっている。 When the second molding resin material B is injected into the second injection-side runner path 52 from an injection unit (not shown), the second molding resin material B passes through the first rear runner path 87 and the first molding die. It flows into the first molding recess 81 of 80, and further flows into the second molding recess 85 of the second molding die 83 through the second rear runner passage 89. The second molding resin material B has a melting point lower than that of the first molding resin material A.

第２の成形樹脂素材Ｂは、第１の成形型８０内においては、成形ピン１０３の先端１０５に当接し、成形ピン１０３を弾性部材１２０の弾性に抗して第１の成形凹部８１内から押し出しながら、軸成形凹部９１及び鍔成形凹部９２，９３に流れ込み、軸状の成形物Ｐと、軸状の成形物Ｐの両側に位置する鍔部Ｑが成形される。成形ピン１０３が第２の成形樹脂素材Ｂの流入によって押し出されると、環状の成形物Ｒに空洞Ｒ１が形成されること
になり、軸状の成形物Ｐは、この空洞Ｒ１を挿通して成形される。 The second molding resin material B contacts the tip 105 of the molding pin 103 in the first molding die 80, and the molding pin 103 resists the elasticity of the elastic member 120 from within the first molding recess 81. While extruding, it flows into the shaft forming recess 91 and the flange forming recesses 92 and 93, and the shaft-shaped molded product P and the flanges Q located on both sides of the shaft-shaped molded product P are molded. When the molding pin 103 is pushed out by the inflow of the second molding resin material B, a cavity R1 is formed in the annular molding R, and the shaft-shaped molding P is molded through the cavity R1. Is done.

第２の成形樹脂素材Ｂは、第２の成形型８３内においては、成形ピン１３３の先端１３５に当接し、成形ピン１３３を弾性部材１２０の弾性に抗して第２の成形凹部８５内から押し出しながら、軸成形凹部９５及び鍔成形凹部９６，９７に流れ込み、軸状の成形物Ｐと、軸状の成形物Ｐの両側に位置する鍔部Ｑが成形される。成形ピン１３３が第２の成形樹脂素材Ｂの流入によって押し出されると、環状の成形物Ｒに空洞Ｒ１が形成されることになり、軸状の成形物Ｐは、この空洞Ｒ１を挿通して成形される。 In the second molding die 83, the second molding resin material B abuts on the tip 135 of the molding pin 133, and the molding pin 133 resists the elasticity of the elastic member 120 from the second molding recess 85. While extruding, it flows into the shaft forming recess 95 and the flange forming recesses 96, 97, and the shaft-shaped molded product P and the flanges Q located on both sides of the shaft-shaped molded product P are molded. When the molding pin 133 is pushed out by the inflow of the second molding resin material B, a cavity R1 is formed in the annular molded product R, and the shaft-shaped molded product P is molded through the cavity R1. Is done.

軸状の成形物Ｐは、これを成形する第２の成形樹脂素材Ｂの融点が、環状の成形物Ｒを成形する第１の成形樹脂素材Ａの融点より低くなっているので、環状の成形物Ｒと溶着することがない。このようにして、図７に示すように、軸状の成形物Ｐと、軸状の成形物Ｐの周囲に回動可能に取り付けられた環状の成形物Ｒとからなる成形物Ｓが成形される（第２の成形工程）。 Since the melting point of the second molding resin material B for molding the shaft-shaped molding P is lower than the melting point of the first molding resin material A for molding the annular molding R, the annular molding P There is no welding with the object R. In this way, as shown in FIG. 7, a molded product S composed of the shaft-shaped molded product P and the annular molded product R rotatably attached around the shaft-shaped molded product P is molded. (Second molding step).

なお、第１の射出側ランナー路５１によって第１の射出側ランナーＭ１が成形され、第１の先ランナー路８６によって第１の先ランナーＭ２が成形され、第２の先ランナー路８８によって第２の先ランナーＭ３が成形される。また、第２の射出側ランナー路５２によって第２の射出側ランナーＮ１が成形され、第１の後ランナー路８７によって第１の後ランナーＮ２が成形され、第２の後ランナー路８９によって第２の後ランナーＮ３が成形される。 The first injection runner M1 is formed by the first injection runner path 51, the first front runner M2 is formed by the first front runner path 86, and the second front runner path 88 is the second. The first runner M3 is formed. The second injection-side runner N1 is formed by the second injection-side runner path 52, the first rear runner N2 is formed by the first rear runner path 87, and the second by the second rear runner path 89. The rear runner N3 is formed.

射出成形装置を駆動し、移動金型（第１の金型）１０を固定金型（第２の金型）６０から離すと、移動金型（第１の金型）１０の第１の移動側成形凹部３６、第２の移動側成形凹部３９、第１の射出側ランナー溝４３、第２の射出側ランナー溝４５、第１の先ランナー溝３７、第２の先ランナー溝４１、第１の後ランナー溝３８及び第２の後ランナー溝４２に、成形物Ｓ、第１の射出側ランナーＭ１、第２の射出側ランナーＮ１、第１の先ランナーＭ２、第２の先ランナーＭ３、第１の後ランナーＮ２、第２の後ランナーＮ３が着接している。 When the injection molding apparatus is driven and the movable mold (first mold) 10 is separated from the fixed mold (second mold) 60, the first movement of the movable mold (first mold) 10 is performed. Side molding recess 36, second moving side molding recess 39, first injection side runner groove 43, second injection side runner groove 45, first front runner groove 37, second front runner groove 41, first In the rear runner groove 38 and the second rear runner groove 42, the molded product S, the first injection side runner M1, the second injection side runner N1, the first front runner M2, the second front runner M3, the second The first rear runner N2 and the second rear runner N3 are attached.

図示しない油圧シリンダを駆動して、摺動台１６を前方に移動させると、突き出しピン１９が第１の射出側ランナーＭ１及び第２の射出側ランナーＮ１を前方に突き出して、移動金型（第１の金型）１０から第１の射出側ランナーＭ１及び第２の射出側ランナーＮ１を取り出す。次に、図示しない油圧シリンダを駆動して、摺動台１７を前方に移動させると、突き出しピン２０が第１の先ランナーＭ２、第２の先ランナーＭ３、第１の後ランナーＮ２及び第２の後ランナーＮ３を前方に突き出して、移動金型（第１の金型）１０から成形物Ｓ、第１の先ランナーＭ２、第２の先ランナーＭ３、第１の後ランナーＮ２及び第２の後ランナーＮ３を取り出すことができる。 When a hydraulic cylinder (not shown) is driven and the slide base 16 is moved forward, the protrusion pin 19 protrudes the first injection side runner M1 and the second injection side runner N1 forward, and the moving mold (first The first injection side runner M1 and the second injection side runner N1 are taken out from the first mold 10). Next, when a hydraulic cylinder (not shown) is driven and the slide base 17 is moved forward, the protrusion pin 20 moves the first front runner M2, the second front runner M3, the first rear runner N2, and the second The rear runner N3 is protruded forward, and the molded product S, the first front runner M2, the second front runner M3, the first rear runner N2 and the second rear mold are moved from the moving mold (first mold) 10. The rear runner N3 can be taken out.

上記したように、成形装置１から成形物Ｓが取り出されると、成形ピン１０３・・、１３３・・が、スプリング等の弾性部材１２０によって、フランジ１０４，１３４が前部ブロック片１１１，１４１に当接し、先端が軸成形凹部９１，９５の鍔成形凹部９２，９６内まで突出する初期状態に復帰する。 As described above, when the molded product S is taken out from the molding device 1, the flanges 104 and 134 are brought into contact with the front block pieces 111 and 141 by the elastic members 120 such as springs. Then, it returns to the initial state where the tip projects into the flange forming recesses 92 and 96 of the shaft forming recesses 91 and 95.

上記実施の形態では、成形ピン１０３，１３３を弾性部材１２０によって第１の成形凹部８１、第２の成形凹部８５内に突出する方向に付勢したが、弾性部材１２０を使用せずに、成形ピン１０３，１３３をアクチュエータ１５０により強制的に長手方向に摺動させるようにした他の実施の形態について説明する。例えば、図６に示すように、成形ピン１３３・・の後部を連結ブロック１５５に固定し、後部ブロック１５５を油圧シリンダ等のアクチュエータ１５０の駆動軸に接続する。 In the above embodiment, the molding pins 103 and 133 are urged by the elastic member 120 in the direction protruding into the first molding concave portion 81 and the second molding concave portion 85. However, the molding pins 103 and 133 are molded without using the elastic member 120. Another embodiment in which the pins 103 and 133 are forcibly slid in the longitudinal direction by the actuator 150 will be described. For example, as shown in FIG. 6, the rear part of the forming pins 133... Is fixed to the connecting block 155, and the rear block 155 is connected to the drive shaft of the actuator 150 such as a hydraulic cylinder.

成形ピン１３３・・は、初期状態において、アクチュエータ１５０により、フランジ１３４が前部ブロック片１４１に当接し、先端１３５が軸成形凹部９５の鍔成形凹部９６内まで突出している。移動金型（第１の金型）１０の表面（接合面）２５を固定金型（第２の金型）６０の表面（接合面）６１に接合すると、第２の成形型８３と、第２の先ランナー路８８と、第２の後ランナー路８９と、第１の射出側ランナー路５１と、第２の射出側ランナー路５２が形成される。 In the initial state, the molding pin 133... Has the flange 134 in contact with the front block piece 141 by the actuator 150, and the tip 135 protrudes into the flange forming recess 96 of the shaft forming recess 95. When the surface (bonding surface) 25 of the moving mold (first mold) 10 is bonded to the surface (bonding surface) 61 of the fixed mold (second mold) 60, the second mold 83, Two front runner paths 88, a second rear runner path 89, a first injection side runner path 51, and a second injection side runner path 52 are formed.

図示しない射出ユニットから第１の射出側ランナー路５１に第１の成形樹脂素材Ａを射出すると、この第１の成形樹脂素材Ａは、第２の先ランナー路８８を通って第２の成形型８３の第２の成形凹部８５内に流入する。第１の成形樹脂素材Ａは、第２の成形型８３内においては、成形ピン１３３の周囲の環状成形凹部９８に流れ込み環状の成形物Ｒが成形される（第１の成形工程）。 When the first molding resin material A is injected into the first injection-side runner path 51 from an injection unit (not shown), the first molding resin material A passes through the second leading runner path 88 and the second molding die. 83 flows into the second molding recess 85. In the second molding die 83, the first molding resin material A flows into the annular molding recess 98 around the molding pin 133, and the annular molding R is molded (first molding step).

アクチュエータ１５０を作動させて成形ピン１３３を第２の成形凹部８５から抜き出すと、環状の成形物Ｒに空洞Ｒ１が形成される（第１の成形工程）。図示しない射出ユニットから第２の射出側ランナー路５２に第２の成形樹脂素材Ｂを射出すると、この第２の成形樹脂素材Ｂは、第２の後ランナー路８９を通って第２の成形型８３の第２の成形凹部８５内に流入する。第２の成形樹脂素材Ｂは、軸成形凹部９５及び鍔成形凹部９６，９７に流れ込み、軸状の成形物Ｐと、軸状の成形物Ｐの両側に位置する鍔部Ｑが成形される。軸状の成形物Ｐは、環状の成形物Ｒの空洞Ｒ１を挿通して成形される。 When the actuator 150 is operated to extract the molding pin 133 from the second molding recess 85, a cavity R1 is formed in the annular molded product R (first molding process). When the second molding resin material B is injected into the second injection-side runner path 52 from an injection unit (not shown), the second molding resin material B passes through the second rear runner path 89 and becomes the second molding die. 83 flows into the second molding recess 85. The second molding resin material B flows into the shaft molding concave portion 95 and the collar molding concave portions 96 and 97, and the shaft-shaped molded product P and the collar portions Q located on both sides of the shaft-shaped molded product P are molded. The shaft-shaped molded product P is molded by being inserted through the cavity R1 of the annular molded product R.

軸状の成形物Ｐは、これを成形する第２の成形樹脂素材Ｂの融点が、環状の成形物Ｒを成形する第１の成形樹脂素材Ａの融点より低くなっているので、環状の成形物Ｒと溶着することがない。このようにして、図７に示すように、軸状の成形物Ｐと、軸状の成形物６の周囲に回動可能に取り付けられた環状の成形物Ｒとからなる成形物Ｓが成形される（第３の成形工程）。 Since the melting point of the second molding resin material B for molding the shaft-shaped molding P is lower than the melting point of the first molding resin material A for molding the annular molding R, the annular molding P There is no welding with the object R. In this way, as shown in FIG. 7, a molded product S composed of the shaft-shaped molded product P and the annular molded product R rotatably attached around the shaft-shaped molded product 6 is molded. (Third molding step).

射出成形装置を駆動し、移動金型（第１の金型）１０を固定金型（第２の金型）６０から離すと、第２の移動側成形凹部３９、第２の射出側ランナー溝４５、第２の先ランナー溝４１及び第２の後ランナー溝４２に、成形物Ｓ、第２の射出側ランナーＮ１、第２の先ランナーＭ３、第２の後ランナーＮ３が着接している。 When the injection molding apparatus is driven and the moving mold (first mold) 10 is separated from the fixed mold (second mold) 60, the second moving-side molding recess 39, the second injection-side runner groove 45, the second front runner groove 41 and the second rear runner groove 42 are in contact with the molded product S, the second injection runner N1, the second front runner M3, and the second rear runner N3.

図示しない油圧シリンダを駆動して、摺動台１６を前方に移動させると、突き出しピン１９が前方に突き出して、移動金型（第１の金型）１０から第２の射出側ランナーＮ１を取り出し、次に、図示しない油圧シリンダを駆動して、摺動台１７を前方に移動させると、突き出しピン２０が前方に突き出して、移動金型（第１の金型）１０から成形物Ｓ、第２の先ランナーＭ３及び第２の後ランナーＮ３を取り出すことができる。 When a hydraulic cylinder (not shown) is driven to move the slide base 16 forward, the protrusion pin 19 protrudes forward, and the second injection-side runner N1 is taken out from the moving mold (first mold) 10. Next, when a hydraulic cylinder (not shown) is driven to move the slide base 17 forward, the protruding pin 20 protrudes forward, and the molded product S, the first molded product S from the movable mold (first mold) 10. The second front runner M3 and the second rear runner N3 can be taken out.

上記したように、成形装置１から成形物Ｓが取り出されると、アクチュエータ１５０を作動させて、成形ピン１３３・・が、フランジ１３４が前部ブロック片１４１に当接し、先端が軸成形凹部９５の鍔成形凹部９６内まで突出する初期状態に復帰する。 As described above, when the molded product S is taken out from the molding apparatus 1, the actuator 150 is operated to cause the molding pins 133 to contact the front block piece 141 with the molding pins 133. It returns to the initial state where it protrudes into the ridge forming recess 96.

本願発明に係る成形装置の基本的な動作を説明する説明図である。It is explanatory drawing explaining the fundamental operation | movement of the shaping | molding apparatus which concerns on this invention. 本願発明に係る成形装置の基本的な動作を説明する説明図である。It is explanatory drawing explaining the fundamental operation | movement of the shaping | molding apparatus which concerns on this invention. 本願発明に係る成形装置の全体側面図である。1 is an overall side view of a molding apparatus according to the present invention. 本願発明に係る成形装置の上面図である。It is a top view of the shaping | molding apparatus which concerns on this invention. 本願発明に係る成形装置の要部側面図である。It is a principal part side view of the shaping | molding apparatus which concerns on this invention. 本願発明に係る成形装置の他の実施の形態を示す上面図である。It is a top view which shows other embodiment of the shaping | molding apparatus based on this invention. 本願発明に係る成形物の実施の形態を示す平面図である。It is a top view which shows embodiment of the molded product which concerns on this invention.

符号の説明Explanation of symbols

Ａ第１の成形樹脂素材
Ｂ第２の成形樹脂素材
Ｐ軸状の成形物
Ｑ鍔部
Ｒ環状の成形物
Ｒ１空洞
Ｓ成形物
Ｍ先のランナー
Ｎ後のランナー
Ｍ１第１の射出側ランナー
Ｍ２第１の先ランナー
Ｍ３第２の先ランナー
Ｎ１第２の射出側ランナー
Ｎ２第１の後ランナー
Ｎ３第２の後ランナー
１成形装置
１０移動金型（第１の金型）
１１成形型台
１２基台
１３ブロック体
１５空室
１６摺動台
１７摺動台
１９突き出しピン
２０突き出しピン
２５表面（接合面）
２６第１の位置決め凹部
２７第２の位置決め凹部
３１第１の移動側駒体
３１ａ表面
３２第２の移動側駒体
３２ａ表面
３６第１の移動側成形凹部
３７第１の先ランナー溝
３８第１の後ランナー溝
３９第２の移動側成形凹部
４１第２の先ランナー溝
４２第２の後ランナー溝
４３第１の射出側ランナー溝
４５第２の射出側ランナー溝
５１第１の射出側ランナー路
５２第２の射出側ランナー路
６０固定金型（第２の金型）
６１表面（接合面）
６２第１の位置決め凹部
６３第２の位置決め凹部
６５第１の固定側駒体
６５ａ表面
６６第２の固定側駒体
６６ａ表面
６７第１の固定側成形凹部
６８第１の先ランナー溝
６９第１の後ランナー溝
７１第２の固定側成形凹部
７２第２の先ランナー溝
７３第２の後ランナー溝
７５第１の射出側ランナー溝
７６第２の射出側ランナー溝
７８第２の後ランナー路
８０第１の成形型
８１第１の成形凹部
８３第２の成形型
８５第２の成形凹部
８６第１の先ランナー路
８７第１の後ランナー路
８８第２の先ランナー路
８９第２の後ランナー路
９１軸成形凹部
９１ａ開口
９２鍔成形凹部
９３鍔成形凹部
９４環状成形凹部
９５軸成形凹部
９５ａ開口
９６鍔成形凹部
９７鍔成形凹部
９８環状成形凹部
１０１第１の軸受け駒体
１０３成形ピン
１０４フランジ
１０５先端
１１１前部ブロック片
１１２中間部ブロック片
１１３後部ブロック片
１１５案内孔
１１６案内孔
１１７収容孔
１２０バネ（弾性部材）
１２１収容穴
１３１第２の軸受け駒体
１３３成形ピン
１３４フランジ
１３５先端
１４１前部ブロック片
１４２中間部ブロック片
１４３後部ブロック片
１４５案内孔
１４６案内孔
１４７収容孔
１４８収容穴
１５０アクチュエータ（油圧装置）
１５５連結ブロック A 1st molding resin material B 2nd molding resin material P Shaft-shaped molded product Q ridge part R annular molded product R1 cavity S molded product M ahead runner N behind runner M1 first injection side runner M2 first 1 front runner M3 2nd front runner N1 2nd injection side runner N2 1st rear runner N3 2nd rear runner 1 molding device 10 moving mold (first mold)
11 Mold base 12 Base 13 Block body 15 Void 16 Slide base 17 Slide base 19 Extrusion pin 20 Extrusion pin 25 Surface (joint surface)
26 1st positioning recessed part 27 2nd positioning recessed part 31 1st movement side piece body 31a surface 32 2nd movement side piece body 32a surface 36 1st movement side shaping | molding recessed part 37 1st front runner groove | channel 38 1st Rear runner groove 39 Second moving side molding recess 41 Second front runner groove 42 Second rear runner groove 43 First injection side runner groove 45 Second injection side runner groove 51 First injection side runner path 52 Second injection side runner path 60 Fixed mold (second mold)
61 Surface (joint surface)
62 1st positioning recessed part 63 2nd positioning recessed part 65 1st fixed side piece body 65a surface 66 2nd fixed side piece body 66a surface 67 1st fixed side shaping | molding recessed part 68 1st front runner groove | channel 69 1st Rear runner groove 71 Second fixed side molding recess 72 Second front runner groove 73 Second rear runner groove 75 First injection side runner groove 76 Second injection side runner groove 78 Second rear runner path 80 First mold 81 First mold recess 83 Second mold 85 Second mold recess 86 First front runner path 87 First rear runner path 88 Second front runner path 89 Second rear runner Path 91 Shaft forming concave portion 91a Opening 92 鍔 molding concave portion 93 鍔 molding concave portion 94 Annular molding concave portion 95 Shaft forming concave portion 95a Opening 96 鍔 molding concave portion 97 鍔 molding concave portion 98 Annular molding concave portion 101 First bearing piece 103 Molding pin 04 Flange 105 tip 111 front block piece 112 intermediate portion block piece 113 rear block piece 115 guide holes 116 guide hole 117 accommodating hole 120 spring (elastic member)
121 receiving hole 131 second bearing piece 133 molding pin 134 flange 135 tip 141 front block piece 142 intermediate block piece 143 rear block piece 145 guide hole 146 guide hole 147 accommodation hole 148 accommodation hole 150 actuator (hydraulic device)
155 Connecting block

Claims

第１の金型と第２の金型とからなり、前記第１の金型と前記第２の金型が接合することによって成形型が形成される成形装置であって、
前記成形型には、
軸状の二次成形物を成形する二次成形凹部と、
二次成形物の周囲に一次成形物を成形する一次成形凹部と、
二次成形凹部内に挿脱可能に設けられた成形ピンと、
が設けられていることを特徴とする成形装置。 A molding apparatus comprising a first mold and a second mold, wherein a molding die is formed by joining the first mold and the second mold,
The mold includes
A secondary molding recess for molding a shaft-shaped secondary molding;
A primary molding recess for molding the primary molding around the secondary molding;
A molding pin provided in the secondary molding recess so as to be detachable;
Is provided with a molding apparatus.

前記成形型には、前記成形ピンを二次成形凹部の挿入方向に付勢する弾性部材が設けられていることを特徴とする請求項１記載の成形装置。 The molding apparatus according to claim 1, wherein the molding die is provided with an elastic member that biases the molding pin in the insertion direction of the secondary molding recess.

前記成形型には、前記成形ピンを二次成形凹部内に挿脱させるアクチュエータが設けられていることを特徴とする請求項１記載の成形装置。 The molding apparatus according to claim 1, wherein the molding die is provided with an actuator for inserting and removing the molding pin into and from the secondary molding recess.

前記成形型には、前記一次成形凹部に一次成形樹脂素材を流し込む一次ランナー溝と、前記二次成形凹部に二次成形樹脂素材を流し込む二次ランナー溝とが設けられていることを特徴とする請求項１、２又は３記載の成形装置。 The molding die is provided with a primary runner groove for pouring a primary molding resin material into the primary molding recess and a secondary runner groove for pouring a secondary molding resin material into the secondary molding recess. The molding apparatus according to claim 1, 2 or 3.

前記成形型には、前記一次成形凹部に一次成形樹脂素材を流し込む一次ランナー溝と、前記二次成形凹部に、前記成形ピンを弾性部材の弾性に抗して二次成形凹部から押し出しながら二次成形樹脂素材を流し込む二次ランナー溝とが設けられていることを特徴とする請求項２記載の成形装置。 The molding die includes a primary runner groove into which a primary molding resin material is poured into the primary molding recess and a secondary runner while extruding the molding pin from the secondary molding recess against the elasticity of an elastic member into the secondary molding recess. The molding apparatus according to claim 2, further comprising a secondary runner groove into which a molded resin material is poured.

前記二次成形凹部の両側には、軸状の二次成形物の両側に鍔部を成形する鍔成形凹部が形成されていることを特徴とする請求項１乃至５のいずれか１項に記載の成形装置。 6. A flange forming recess for forming a flange on both sides of the shaft-shaped secondary molded product is formed on both sides of the secondary forming recess. Molding equipment.

成形ピンが弾性部材により挿入方向に付勢された状態で内部に挿入された成形空間に第１の成形樹脂素材を射出して成形ピンの周囲に一次成形物を成形する第１の成形工程と、
第１の成形樹脂素材の融点より低い融点の第２の成形樹脂素材を成形空間に射出し、第２の成形樹脂素材の流入圧力により成形ピンを押し出しながら、成形ピンが押し出されることによって形成される一次成形物の空洞に、二次成形物を成形し、二次成形物の周囲に一次成形物を可動可能にした成形物を成形する第２の成形工程と、
からなることを特徴とする成形物の成形方法。 A first molding step of injecting a first molding resin material into a molding space inserted therein in a state where the molding pin is urged in the insertion direction by an elastic member, and molding a primary molded product around the molding pin; ,
It is formed by injecting a second molding resin material having a melting point lower than that of the first molding resin material into the molding space, and extruding the molding pin while extruding the molding pin by the inflow pressure of the second molding resin material. A second molding step in which a secondary molded product is molded in a cavity of the primary molded product, and a molded product in which the primary molded product is movable around the secondary molded product;
A method for forming a molded product, comprising:

成形ピンがアクチュエータにより内部に挿入された成形空間に第１の成形樹脂素材を射出して成形ピンの周囲に一次成形物を成形する第１の成形工程と、
アクチュエータにより成形ピンを一次成形物から引き抜き、一次成形物に空洞を形成する第２の成形工程と、
一次成形物の空洞に、第１の成形樹脂素材の融点より低い融点の第２の成形樹脂素材を射出して二次成形物を成形し、二次成形物の周囲に一次成形物を可動可能にした成形物を成形する第３の成形工程と、
からなることを特徴とする成形物の成形方法。 A first molding step of injecting a first molding resin material into a molding space in which a molding pin is inserted by an actuator and molding a primary molded product around the molding pin;
A second molding step of drawing a molding pin from the primary molded product by an actuator and forming a cavity in the primary molded product;
A second molding resin material having a melting point lower than that of the first molding resin material is injected into the cavity of the primary molding material to mold the secondary molding material, and the primary molding material can be moved around the secondary molding material. A third molding step for molding the molded product,
A method for forming a molded product, comprising:

軸状の二次成形物と、
二次成形物の周囲に可動可能に取り付けられた一次成形物とからなり、
一次成形物は、第１の成形樹脂素材によって成形され、内部に空洞が形成されており、
二次成形物は、第１の成形樹脂素材よりも融点の低い第２の成形樹脂素材によって軸状に成形され、一次成形物の空洞に挿通されていることを特徴とする成形物。 A shaft-shaped secondary molding,
It consists of a primary molding movably attached around the secondary molding,
The primary molding is molded from the first molding resin material, and a cavity is formed inside,
The molded product, wherein the secondary molded product is formed into a shaft shape by a second molded resin material having a melting point lower than that of the first molded resin material, and is inserted into a cavity of the primary molded product.

二次成形物の両側には、二次成形物から一次成形物が外れるのを阻止する鍔部が成形されていることを特徴とする請求項９記載の成形物。

The molded product according to claim 9, wherein the both sides of the secondary molded product are formed with ridges that prevent the primary molded product from being detached from the secondary molded product.