JP2005205801A - Trimming structure of foaming member - Google Patents

Trimming structure of foaming member Download PDF

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Publication number
JP2005205801A
JP2005205801A JP2004016305A JP2004016305A JP2005205801A JP 2005205801 A JP2005205801 A JP 2005205801A JP 2004016305 A JP2004016305 A JP 2004016305A JP 2004016305 A JP2004016305 A JP 2004016305A JP 2005205801 A JP2005205801 A JP 2005205801A
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Prior art keywords
foam
base material
required cutting
trimming
skin
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Japanese (ja)
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Hiroshi Suzuki
浩 鈴木
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Inoac Corp
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Inoue MTP KK
Inoac Corp
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Priority to JP2004016305A priority Critical patent/JP2005205801A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1252—Removing portions of the preformed parts after the moulding step
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining

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  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To simply and exactly fracture/separate a substrate excision necessary part, a foam excision necessary part, and a skin material excision necessary part by a foaming mold simple in constitution. <P>SOLUTION: A fracture schedule part 20 is formed along a trimming line TL in a substrate 12. A tip projection 22 extending along the fracture schedule part 20 is formed on the side for forming foam 14 of the necessary excisional part 12A of the substrate. In this way, after the completion of the foaming of the foam 14, by advancing the slide mold 52 of the foaming mold 40 from a substrate setting surface 44, first the the necessary excisional part 12A of the substrate is fractured/separated from the substrate 12 by the fracture of the fracture schedule part 20. Next, by the further advance of the slide mold 52, the foam 14 is pushed/cut by the tip projection 22 formed in the necessary excisional part 12A of the substrate after the separation, and the necessary excisional part 14A of the foam is fractured/separated from the foam. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、発泡成形部材のトリミング構造に関し、更に詳細には、少なくとも所要形状に形成された合成樹脂製の基材と、この基材をセットした発泡成形型により該基材の一側面に形成された発泡体とからなり、基材の基材要切除部および発泡体の発泡体要切除部の夫々を、トリミングラインに沿って該基材および発泡体から破断・分離するようにした発泡成形部材のトリミング構造に関するものである。   The present invention relates to a trimming structure of a foam molded member, and more specifically, formed on one side surface of a synthetic resin base material formed at least in a required shape and a foam molding die on which the base material is set. Foam molding comprising a base material and a foam base cut portion of the base material, and the foam base cut portion of the base material and the foam base cut portion are broken and separated from the base material and the foam along the trimming line. The present invention relates to a member trimming structure.

例えば図９に例示するように、インストルメントパネルやフロアコンソール等の車両内装部材として実施されている発泡成形部材１０は、所要形状に形成された合成樹脂製の基材１２と、この基材１２の一側面に形成された発泡体１４と、この発泡体１４の外側に該発泡体１４を被覆するよう配設された表皮材１６とからなる３層構造を呈している。インジェクション成形されて適度の剛性を有する基材１２は当該発泡成形部材１０に要求される強度を確保し、また適度の弾力性を有している発泡体１４は該発泡成形部材１０の外面部の触感向上を図るために寄与し、更に外面に露出している表皮材１６は該発泡成形部材１０の質感向上に寄与するようになっている。このような発泡成形部材１０は、所定の成形方法に基づいて所要形状に予備成形した基材１２および表皮材１６を、発泡体１４を発泡成形するための発泡成形型(図示せず)にセットしたもとで、この発泡成形型を型閉めした際の両者の間で発泡体１４を発泡成形することにより、基材１２と発泡体１４、この発泡体１４と表皮材１６とが相互に接着された３層構造に成形される。   For example, as illustrated in FIG. 9, a foam molded member 10 implemented as a vehicle interior member such as an instrument panel or a floor console includes a synthetic resin base material 12 formed in a required shape, and the base material 12. 3 has a three-layer structure including a foam 14 formed on one side surface and a skin material 16 disposed on the outside of the foam 14 so as to cover the foam 14. The base material 12 which is injection-molded and has an appropriate rigidity ensures the strength required for the foam-molded member 10, and the foam 14 having an appropriate elasticity is formed on the outer surface portion of the foam-molded member 10. The skin material 16 that contributes to improving the tactile sensation and that is exposed on the outer surface contributes to the improvement of the texture of the foam molded member 10. In such a foam molded member 10, the base material 12 and the skin material 16 that have been preformed into a required shape based on a predetermined molding method are set in a foam molding die (not shown) for foam molding the foam 14. Then, the foam body 14 is foam-molded between the two when the foam mold is closed, so that the base material 12 and the foam body 14, and the foam body 14 and the skin material 16 are bonded to each other. The formed three-layer structure is formed.

また、前述した車両内装部材の場合では、別部材として構成された種々の付属部品(例えばエアアウトレットや装飾パネル等)を後付形態で取付ける場合が多く、この付属部品の取付けを図るための取付開口部１８を所定位置に開設する必要がある。このような取付開口部１８の開設作業は、発泡成形される発泡体１４の漏出防止を考慮して、一般的には発泡成形工程の次工程において実施されることが多い。すなわち、基材１２および表皮材１６では、図１０に例示するように、取付開口部１８の形成予定部位に基材要切除部１２Ａおよび表皮材要切除部１６Ａをその予備成形時に一体的に形成しておき、発泡体１４の発泡成形時には取付開口部１８に対応する開口部が形成されないようにしておく。そして、基材１２および表皮材１６の間で発泡体１４を発泡成形した後、基材要切除部１２Ａおよび表皮材要切除部１６Ａの輪郭ラインに沿って延在するトリミングラインＴＬに沿って基材１２、表皮材１６および発泡体１４を破断することで、基材要切除部１２Ａおよび表皮材要切除部１６Ａと、発泡成形された発泡体要切除部１４Ａとを、これら基材１２、表皮材１６および発泡体１４から分離するようになっている。   In addition, in the case of the vehicle interior member described above, various accessory parts (for example, air outlets and decorative panels) configured as separate members are often attached in a retrofit manner. It is necessary to open the opening 18 at a predetermined position. In general, the opening operation of the mounting opening 18 is often performed in the next process of the foam molding process in consideration of prevention of leakage of the foam 14 to be foam molded. That is, in the base material 12 and the skin material 16, as illustrated in FIG. 10, the base material required cutting portion 12 </ b> A and the skin material required cutting portion 16 </ b> A are integrally formed at the site where the mounting opening 18 is to be formed. In addition, an opening corresponding to the attachment opening 18 is not formed when the foam 14 is foam-molded. Then, after foaming the foam 14 between the base material 12 and the skin material 16, the base is cut along the trimming line TL extending along the contour lines of the base material required cutting portion 12A and the skin material required cutting portion 16A. By breaking the material 12, the skin material 16 and the foam 14, the base material required cutting portion 12A and the skin material required cutting portion 16A, and the foamed foam required cutting portion 14A, the base material 12, the skin Separated from the material 16 and the foam 14.

ここで、基材要切除部１２Ａ、表皮材要切除部１６Ａおよび発泡体要切除部１４Ａのトリミング作業は、従前の方法によれば、発泡体１４の成形完了後に発泡成形型から脱型した発泡成形部材１０を、次工程において所謂トリミング機構を装備した別のトリミング装置にセットして行なっていた。しかしながら、このトリミング装置によるトリミング作業では、発泡成形部材１０をセットする際に多少なりとも位置決め誤差があるため、トリミング位置にバラツキが発生して取付開口部１８を正確な位置へ開設するのが難しい問題を内在していた。このため近年に至っては、トリミング機構を装備した発泡成形型が提案され、発泡体１４の発泡成形完了後(脱型前)にこのトリミング機構により前述したトリミングラインＴＬに沿って切込みを入れることで、基材要切除部１２Ａ、表皮材要切除部１６Ａおよび発泡体要切除部１４Ａを、基材１２、表皮材１６および発泡体１４から破断・分離するトリミング方法が採用されている。このようなトリミング機構を具備した発泡成形型に関しては、例えば特許文献１および特許文献２等に開示されている。   Here, according to the conventional method, the trimming work of the base material required cutting portion 12A, the skin material required cutting portion 16A, and the foam required cutting portion 14A is foaming removed from the foaming mold after the foam 14 has been molded. The molding member 10 was set in another trimming apparatus equipped with a so-called trimming mechanism in the next process. However, in the trimming operation by this trimming apparatus, there is some positioning error when setting the foamed molded member 10, so that the trimming position varies and it is difficult to open the mounting opening 18 at an accurate position. The problem was inherent. Therefore, in recent years, a foam molding die equipped with a trimming mechanism has been proposed, and after the foam molding of the foam 14 is completed (before demolding), the trimming mechanism cuts along the trimming line TL described above. In addition, a trimming method is employed in which the base material required cut portion 12A, the skin material required cut portion 16A and the foam required cut portion 14A are broken and separated from the base material 12, the skin material 16 and the foam 14. For example, Patent Literature 1 and Patent Literature 2 disclose a foaming mold having such a trimming mechanism.

特許文献１に開示の発泡成形部材のトリミング構造は、発泡成形型にトリミング機構として装備した加熱装置により、トリミングラインに沿って表皮材を加熱溶断することで、表皮材要切除部(表皮の除去予定部)を表皮材から破断・分離する構成となっている。また特許文献２に開示の発泡成形部材のトリミング構造は、発泡成形型にトリミング機構として装備した切断刃装置により、トリミングラインに沿って基材、発泡体および表皮材を切断することで、基材要切除部、表皮材要切除部および発泡体要切除部を、基材、発泡体および表皮材から破断・分離する構成となっている。なお特許文献１および特許文献２は、何れも本願発明者の提案によるものである。
特開平１０−３３７７３７号公報 特開平１０−３３７７４０号公報 The trimming structure of the foam molded member disclosed in Patent Document 1 is a skin material required excision part (removal of the skin) by heating and cutting the skin material along the trimming line by a heating device equipped as a trimming mechanism on the foam molding die. The planned part) is broken and separated from the skin material. Moreover, the trimming structure of the foam-molded member disclosed in Patent Document 2 is obtained by cutting the base material, the foam and the skin material along the trimming line with a cutting blade device equipped as a trimming mechanism in the foam-molding die. The cut-off portion, the skin material-required portion, and the foam-required cut portion are configured to be broken and separated from the base material, the foam, and the skin material. Note that Patent Document 1 and Patent Document 2 are both based on the proposal of the present inventor.
Japanese Patent Laid-Open No. 10-337737 JP-A-10-337740

前述した特許文献１に開示の発泡成形部材のトリミング構造は、セラミックヒータ等の加熱装置からなるトリミング機構を発泡成形型に装備したことにより、また特許文献２に開示の発泡成形部材のトリミング構造は、ホットプレス刃やコールドプレス刃の切断刃装置からなるトリミング機構を発泡成形型に装備したことにより、基材、発泡体および表皮材をトリミングラインに沿って正確に破断することができ、基材要切除部、発泡体要切除部および表皮材要切除部を、基材、発泡体および表皮材から適切に破断・分離することを可能としている。しかしながら前述したトリミング機構は、その構造が複雑でかつ部品点数が増加するものであるため、発泡成形型の製作費用が嵩んで発泡成形部材の製造コストアップを招来する問題等を内在していた。また、トリミング機構の定期的なメンテナンスを行なう必要があり、発泡成形部材の成形効率が低下する虞もあった。   The trimming structure of the foam-molded member disclosed in Patent Document 1 described above is based on the fact that a trimming mechanism including a heating device such as a ceramic heater is provided in the foam-molding die, and the trimming structure of the foam-molded member disclosed in Patent Document 2 is as follows. Since the foaming mold is equipped with a trimming mechanism consisting of a cutting blade device for hot press blades and cold press blades, the base material, foam and skin material can be accurately broken along the trimming line. It is possible to appropriately break and separate the excisable portion, the foam-required portion, and the skin material-required portion from the base material, the foam, and the skin material. However, the above-described trimming mechanism has a complicated structure and an increased number of parts. Therefore, the manufacturing cost of the foaming mold is increased, and there is a problem of increasing the manufacturing cost of the foamed molded member. Further, it is necessary to perform regular maintenance of the trimming mechanism, and there is a possibility that the molding efficiency of the foam molded member is lowered.

従って本発明は、基材と基材要切除部との境界ラインに沿って破断予定部を設けると共に、この基材要切除部に発泡体および表皮材を破断し得る尖端突片を設けることで、簡単な構成の発泡成形型により、基材要切除部、発泡体要切除部および表皮材要切除部を簡易かつ正確に破断・分離し得るようにした発泡成形部材のトリミング構造を提供することを目的とする。   Accordingly, the present invention provides a portion to be broken along the boundary line between the base material and the base material required cut portion, and also provides a pointed protrusion that can break the foam and the skin material at the base material required cut portion. To provide a trimming structure of a foam molded member that can easily and accurately break and separate a base material required cutting portion, a foam required cutting portion, and a skin material required cutting portion by a foam molding die having a simple configuration. With the goal.

前記課題を解決し、所期の目的を達成するため本発明は、
少なくとも所要形状に形成された合成樹脂製の基材と、この基材をセットした発泡成形型により該基材の一側面に形成された発泡体とからなり、前記基材の基材要切除部および発泡体の発泡体要切除部の夫々を、トリミングラインに沿って該基材および発泡体から破断・分離するようにした発泡成形部材において、
前記トリミングラインに沿うよう前記基材に延在し、前記発泡成形型の基材セット面に進退可能に設けたスライド型が前記基材要切除部を押圧した際に破断する破断予定部と、
前記破断予定部に沿うよう前記基材要切除部の前記発泡体が形成される側面に延在し、先端が尖った形状に突設された尖端突片とからなり、
前記発泡体の発泡完了後に前記スライド型を基材セット面から前進させることで、先ず前記破断予定部の破断により前記基材要切除部を前記基材から破断・分離させ、次いで該スライド型の前進に伴って分離後の該基材要切除部の前記尖端突片で発泡体を押切り、前記発泡体要切除部を該発泡体から破断・分離させるよう構成したことを特徴とする。 In order to solve the above-mentioned problems and achieve the intended purpose, the present invention provides:
A base material made of synthetic resin formed in at least a required shape and a foam formed on one side surface of the base material by a foaming mold in which the base material is set. In the foam-molded member in which each of the foam-required cut portions of the foam is broken and separated from the base material and the foam along the trimming line,
Extending to the base material along the trimming line, and a rupture planned portion that breaks when a slide mold provided to be movable back and forth on the base material set surface of the foaming mold presses the base material required cutting portion,
It extends to the side surface on which the foam of the base material required cutting portion is formed so as to be along the planned breaking portion, and consists of a pointed projecting piece protruding in a shape with a sharp tip,
After the foaming of the foam is completed, the slide mold is advanced from the base material set surface. It is characterized in that the foam is pushed off by the pointed projecting piece of the base-required part after separation along with the advance, and the foam-required part is broken and separated from the foam.

本発明に係る発泡成形部材のトリミング構造によれば、基材と基材要切除部との境界ラインに沿って破断予定部を設けると共に、この基材要切除部に発泡体(および表皮材)を破断し得る尖端突片を設けることで、簡単な構成であるスライド型を設けた発泡成形型の該スライド型の押圧により、基材要切除部、発泡体要切除部(および表皮材要切除部)を簡易かつ正確に破断・分離し得る有益な効果を奏する。すなわち発泡成形型は、基材セット面に対して進退可能なスライド型を配設しただけの簡単かつ低廉な構成とするだけでよく、加熱装置や切断刃装置等からなる複雑かつ高価なトリミング機構を具備する必要がないため、設備費用が低く抑えられて発泡成形部材の成形コストを低減し得る利点がある。また、発泡成形型のメンテナンスも殆ど必要としないため、発泡成形部材の成形効率を高め得る等の利点もある。   According to the trimming structure of the foam molded member according to the present invention, a portion to be broken is provided along the boundary line between the base material and the base material required cutting portion, and the foam (and skin material) is provided in the base material required cutting portion. By pressing the slide mold of the foam molding die provided with a slide mold having a simple configuration, the base material required cutting part, the foam required cutting part (and the skin material required cutting) are provided. Part) can be easily and accurately broken and separated. In other words, the foaming mold only needs to have a simple and inexpensive configuration in which a slide mold that can be moved back and forth with respect to the base material set surface is provided, and a complicated and expensive trimming mechanism including a heating device and a cutting blade device. Therefore, there is an advantage that the equipment cost can be kept low and the molding cost of the foam molded member can be reduced. Further, since maintenance of the foam mold is hardly required, there is an advantage that the molding efficiency of the foam molded member can be increased.

次に、本発明に係る発泡成形部材のトリミング構造につき、好適な実施例を挙げて、添付図面を参照しながら以下説明する。   Next, the trimming structure of the foam molded member according to the present invention will be described below with reference to the accompanying drawings by giving a preferred embodiment.

本願が対象とする発泡成形部材は、少なくとも所要形状に形成された合成樹脂製の基材１２と、この基材１２の一側面に形成された発泡体１４とから構成されたものであって、前述した基材１２および発泡体１４からなる２層構造タイプや、基材１２、発泡体１４およびこの発泡体１４を被覆するよう配設される表皮材１６からなる３層構造タイプ等である。そこで本実施例では、基材１２、発泡体１４および表皮材１６からなる３層構造タイプで発泡成形部材を例示し、この発泡成形部材のトリミング構造につき説明する。なお理解の便宜を図るため、発泡成形部材１０は、図９に例示した従来のもとの同一の単純外形形状で例示すると共に、この発泡成形部材１０に矩形状の取付開口部１８を開設する場合を例示する。   The foam molded member targeted by the present application is composed of a synthetic resin base material 12 formed in at least a required shape, and a foam body 14 formed on one side surface of the base material 12, The two-layer structure type including the base material 12 and the foam 14 described above, and the three-layer structure type including the base material 12, the foam body 14, and the skin material 16 disposed so as to cover the foam body 14. Therefore, in this embodiment, the foam molded member is exemplified as a three-layer structure type including the base material 12, the foam 14 and the skin material 16, and the trimming structure of the foam molded member will be described. For convenience of understanding, the foam molded member 10 is illustrated with the same simple external shape as the conventional example illustrated in FIG. 9 and a rectangular mounting opening 18 is opened in the foam molded member 10. The case is illustrated.

図１は、本発明の好適実施例に係る発泡成形部材のトリミング構造を、発泡成形型による発泡体の発泡完了状態で例示した概略断面図であり、図２は、発泡成形型で発泡体を成形した直後の発泡成形部材の要部断面図である。本実施例の発泡成形部材のトリミング構造は、図１に図示したように、基材セット面４４から進退可能に設けた簡単構造のスライド型５２を装備した発泡成形型４０を採用することを前提としている。これに基づいた本実施例のトリミング構造は、取付開口部１８の輪郭ラインに合致するトリミングラインＴＬに沿うよう基材１２に延在し、スライド型５２が基材要切除部１２Ａを押圧した際に破断する破断予定部２０と、破断予定部２０に沿うよう基材要切除部１２Ａの発泡体１４が形成される側面に延在し、先端が尖った形状に突設された尖端突片２２とから構成されている。   FIG. 1 is a schematic cross-sectional view illustrating a trimming structure of a foam molded member according to a preferred embodiment of the present invention in a foam completed state of a foam mold, and FIG. It is principal part sectional drawing of the foaming molding member immediately after shape | molding. As shown in FIG. 1, the trimming structure of the foam molded member of the present embodiment is based on the assumption that a foam mold 40 equipped with a slide mold 52 having a simple structure provided so as to be able to advance and retract from the base material set surface 44 is used. It is said. The trimming structure of the present embodiment based on this extends to the base material 12 along the trimming line TL that matches the contour line of the mounting opening 18, and when the slide mold 52 presses the base material required cutting portion 12A. And a pointed projecting piece 22 extending to the side surface of the base material required cutting portion 12A along which the foam 14 is formed so as to follow the planned breaking portion 20 and projecting in a pointed shape. It consists of and.

図３(ａ),(ｂ)は、図示しないインジェクション成形型を使用したインジェクション成形技術に基づき予備成形された基材１２の一部破断した斜視図であって、例えばこの基材１２は、ポリエチレン(ＰＥ)やポリプロピレン(ＰＰ)等の合成樹脂を材質としている。そして、矩形状の取付開口部１８が開設される部位は、この取付開口部１８より一回り大きい基材陥凹部２４が角錐台形状に形成されており、この基材陥凹部２４の底面における取付開口部１８の開設予定部位には、この取付開口部１８と同一輪郭形状の基材要切除部１２Ａが一体的に形成されている。これら基材１２および基材要切除部１２Ａの各々の厚みＴ１,Ｔ２は何れも２.５ｍｍ程度とされ、図２から明らかなように、厚みＴ１の約１／２程度(１.２〜１.３ｍｍ)だけ、基材要切除部１２Ａが基材１２に対し厚み方向へオフセットした状態に形成されている。   3 (a) and 3 (b) are perspective views, partly broken, of a base material 12 preformed based on an injection molding technique using an injection molding die (not shown). For example, the base material 12 is made of polyethylene. It is made of synthetic resin such as (PE) or polypropylene (PP). The portion where the rectangular attachment opening 18 is opened is formed with a base recess 24 that is slightly larger than the attachment opening 18 in a truncated pyramid shape. A base-required cutting portion 12A having the same contour shape as that of the mounting opening 18 is integrally formed at a site where the opening 18 is to be opened. The thicknesses T1 and T2 of each of the base material 12 and the base material required cutting portion 12A are both about 2.5 mm, and as is apparent from FIG. 2, about 1/2 of the thickness T1 (1.2 to 1). 12 mm), the base-removable portion 12A is formed in a state offset with respect to the base 12 in the thickness direction.

破断予定部２０は、前述した基材要切除部１２Ａの外縁ライン、すなわち基材要切除部１２Ａと基材１２との境界ラインに沿って矩形状に延在形成され、この基材要切除部１２Ａの外縁ラインに沿って横断面Ｖ字形のＶ溝２６を形成することで薄肉に延設されている。すなわち破断予定部２０は、Ｖ溝２６の深さ設定に基づいて厚みが決定されるものであって、基材要切除部１２Ａと基材１２との境界ラインに沿って１ｍｍ以下(好ましくは０.４〜０.６ｍｍ程度)に形成された薄肉の脆弱部である。従って、発泡成形型４０にセットした状態において、前述したスライド型５２が基材要切除部１２Ａを押圧した際には、破断予定部２０に応力が集中してこの破断予定部２０の破断が惹起され、基材要切除部１２Ａが基材１２から破断・分離することが許容される。   The planned fracture portion 20 is formed to extend in a rectangular shape along the outer edge line of the base material required cutting portion 12A, that is, the boundary line between the base material required cutting portion 12A and the base material 12, and this base material required cutting portion. A V-shaped groove 26 having a V-shaped cross section is formed along the outer edge line of 12A so as to extend thinly. That is, the thickness of the planned fracture portion 20 is determined based on the depth setting of the V-groove 26, and is 1 mm or less (preferably 0) along the boundary line between the base material required cutting portion 12A and the base material 12. It is a thin fragile portion formed in a thickness of about 0.4 to 0.6 mm. Therefore, when the above-described slide mold 52 presses the base material required cutting portion 12A in the state where it is set in the foam molding die 40, stress concentrates on the planned fracture portion 20 and the fracture of the planned fracture portion 20 is caused. Thus, the base material required cutting portion 12A is allowed to be broken and separated from the base material 12.

尖端突片２２は、図２に例示したように、破断予定部２０に沿うよう基材要切除部１２Ａの発泡体１４が形成される側面に延在し、先端が尖った横断面三角形状に突設されている。すなわち尖端突片２２は、基材要切除部１２Ａの外縁に沿って１.５〜２ｍｍ程度の突出高さに突設され、後述するように、基材要切除部１２Ａが発泡体１４の側へ押されて移動するに際し、発泡体１４へ楔状に食い込んで該発泡体１４を開裂的に押切り得る形状を呈しており、発泡体要切除部１４Ａを発泡体１４から破断・分離するために供されるようになっている。なお尖端突片２２の横断面の詳細形状は、基材要切除部１２Ａの外縁側が厚み方向に対して略鉛直面となっていると共に内側が所要角度の傾斜面となっていて、頂部の尖端角度は約３０〜４０°程度に設定されているため、取付開口部１８に臨む発泡体１４の破断面が綺麗になるよう考慮されている。   As illustrated in FIG. 2, the pointed projecting piece 22 extends in a side surface where the foam 14 of the base material required cutting portion 12 </ b> A is formed so as to follow the planned breaking portion 20, and has a triangular cross section with a sharp tip. Projected. That is, the pointed projecting piece 22 protrudes at a protruding height of about 1.5 to 2 mm along the outer edge of the base material required cutting portion 12A, and the base material required cutting portion 12A is located on the foam 14 side as described later. In order to break and separate the foam required cutting portion 14A from the foam 14, it has a shape that can be cleaved into the foam 14 when it is pushed and moved. It has come to be offered. The detailed shape of the cross section of the pointed protrusion 22 is such that the outer edge side of the base material required cutting portion 12A is a substantially vertical surface with respect to the thickness direction and the inner side is an inclined surface of a required angle, Since the apex angle is set to about 30 to 40 °, it is considered that the fracture surface of the foam 14 facing the mounting opening 18 is clean.

なお、基材１２において破断予定部２０に臨む端縁部には、この破断予定部２０に沿って段部２８が凹設されている。この段部２８は、図１に例示したように、発泡成形型４０の第１成形型４２の基材セット面４４に基材１２をセットした際に、この基材セット面４４に設けた凸縁部５８に整合するようになっており、後述するように、スライド型５２による基材要切除部１２Ａの押圧時に、基材１２が撓曲的に変形することを防止するために供される。なお段部２８は、図３に例示したように、破断予定部２０を囲繞するよう連続的に形成した形態でもよいし、また図示省略するが、所要長のものを所要間隔毎に断続的に形成した形態としてもよい。   Note that a stepped portion 28 is recessed along the planned fracture portion 20 at the edge of the base material 12 facing the planned fracture portion 20. As illustrated in FIG. 1, the stepped portion 28 is a protrusion provided on the base material setting surface 44 when the base material 12 is set on the base material setting surface 44 of the first molding die 42 of the foam molding die 40. It aligns with the edge portion 58 and serves to prevent the base material 12 from being flexibly deformed when the base material required cutting portion 12A is pressed by the slide mold 52, as will be described later. . In addition, as illustrated in FIG. 3, the stepped portion 28 may be continuously formed so as to surround the planned fracture portion 20, and although not illustrated, those having a required length are intermittently provided at every required interval. It is good also as the formed form.

表皮材１６は、パウダースラッシュ成形技術に基づいて粉末樹脂から予備成形されたものや、スプレー成形技術に基づいてウレタン樹脂から予備成形されたもの等が好適に実施される。前述した何れかの成形技術に基づいて成形された表皮材１６は、矩形状の取付開口部１８が開設される部位に、この取付開口部１８よりやや大きい表皮陥凹部３０が形成されており、この表皮陥凹部３０の底面において取付開口部１８の開設予定部位には表皮材要切除部１６Ａが一体的に形成されている。これら表皮材１６および表皮材要切除部１６Ａの各々の厚みＵ１,Ｕ２は、何れも１.０ｍｍ程度とされている。なお、表皮材要切除部１６Ａの外縁ライン、すなわち表皮材要切除部１６Ａと表皮材１６との境界ラインに沿って、厚さが０.３〜０.５ｍｍ程度とされた薄肉の表皮脆弱部３２が延在形成され、前述した基材要切除部１２Ａの尖端突片２２による押切りが容易になされるよう考慮されている。但し、この表皮脆弱部３２は、図２に例示したような逆Ｖ字形の断面形状に形成する必要はなく、更には尖端突片２２による表皮材１６の押切りが容易である場合には薄肉に形成する必要はない。   The skin material 16 is preferably implemented by a material pre-molded from a powder resin based on a powder slush molding technology or a material preformed from a urethane resin based on a spray molding technology. The skin material 16 molded based on any of the above-described molding techniques has a skin recess 30 that is slightly larger than the mounting opening 18 formed at a portion where the rectangular mounting opening 18 is opened. A skin material-required cut portion 16A is integrally formed at a planned opening portion of the attachment opening 18 on the bottom surface of the skin recessed portion 30. The thicknesses U1 and U2 of the skin material 16 and the skin material required cut portion 16A are both about 1.0 mm. A thin-walled skin weakened portion having a thickness of about 0.3 to 0.5 mm along the outer edge line of the skin material-required portion 16A, that is, the boundary line between the skin material-required portion 16A and the skin material 16. 32 is formed so as to be easily cut by the pointed projecting piece 22 of the base material required cutting portion 12A described above. However, the skin fragile portion 32 does not need to be formed in an inverted V-shaped cross-sectional shape as illustrated in FIG. 2, and if the skin material 16 can be easily cut off by the pointed projecting piece 22, it is thin. There is no need to form.

本実施例のトリミング構造に実施される発泡成形型４０は、図１に例示したように、基材セット面４４を設けた第１成形型４２と、表皮セット面４８を設けた第２成形型４６とから構成され、これら第１成形型４２および第２成形型４６が相互に型閉め可能となっている。第１成形型４２の基材セット面４４には、基材１２の基材陥凹部２４に整合する凹部４４Ａが形成されている一方、第２成形型４６の表皮セット面４８には、表皮材１６の表皮陥凹部３０に整合する凸部４８Ａが形成されている。そして第１成形型４２には、この第１成形型４２の外側に取付けた流体圧シリンダ５４のロッド５６の先端に連結されたスライド型５２が、基材セット面４４の凹部４４Ａに設けた収容凹部５０に収容した状態に配設されており、この基材セット面４４にセットした基材１２の基材要切除部１２Ａに対応して位置するようになっている。   As illustrated in FIG. 1, the foaming mold 40 implemented in the trimming structure of this embodiment includes a first molding mold 42 provided with a base material setting surface 44 and a second molding mold provided with a skin setting surface 48. 46. The first molding die 42 and the second molding die 46 can be closed with each other. The base material set surface 44 of the first mold 42 is formed with a recess 44A that matches the base material recess 24 of the base material 12, while the skin set surface 48 of the second mold 46 has a skin material. Protrusions 48 </ b> A that match the 16 epidermal recesses 30 are formed. In the first mold 42, the slide mold 52 connected to the tip of the rod 56 of the fluid pressure cylinder 54 attached to the outside of the first mold 42 is accommodated in the recess 44 </ b> A of the base material set surface 44. It is arranged in a state of being accommodated in the recess 50 and is positioned corresponding to the base material required cutting portion 12 </ b> A of the base material 12 set on the base material setting surface 44.

スライド型５２は、流体圧シリンダ５４をロッド５６が後退するよう制御した際に、収容凹部５０へ完全に収容されて先端面が基材セット面４４と面一となった第１位置に位置し、流体圧シリンダ５４をロッド５６が前進するよう制御した際に、基材セット面４４から所要量だけ突出した第２位置へスライド変位するようになっている(図１,図５〜図７)。従って、基材セット面４４にセットした基材１２をセットしたもとで、スライド型５２を第１位置から第２位置へ変位させると、基材要切除部１２Ａのみを押圧する構造となっている。   When the fluid pressure cylinder 54 is controlled so that the rod 56 is retracted, the slide mold 52 is located in the first position where it is completely accommodated in the accommodation recess 50 and the front end surface is flush with the substrate setting surface 44. When the fluid pressure cylinder 54 is controlled so that the rod 56 advances, the fluid pressure cylinder 54 is slid to a second position protruding from the base material set surface 44 by a required amount (FIGS. 1, 5 to 7). . Therefore, when the base material 12 set on the base material set surface 44 is set, when the slide mold 52 is displaced from the first position to the second position, only the base material required cutting portion 12A is pressed. Yes.

次に、前述のように構成された本実施例に係る発泡成形部材のトリミング構造の作用につき説明する。   Next, the operation of the trimming structure of the foam molded member according to this embodiment configured as described above will be described.

基材要切除部１２Ａを有する基材１２を、スライド型５２を第１位置に保持した第１成形型４２の基材セット面４４にセットする一方、表皮材要切除部１６Ａを有する表皮材１６を、第２発泡成形型４６の表皮セット面４８にセットし、この表皮材１６の上面に所定量の発泡原料を注出した後に発泡成形型４０を型閉めする。これにより、基材１２と表皮材１６とは両者の外縁部が相互に密着してシール状態が形成されると共に、破断・分離前の基材要切除部１２Ａおよび表皮材要切除部１６Ａが存在していることで基材１２および表皮材１６に開口部が形成されていないため、これら基材１２と表皮材１６との間に画成された発泡空間は気密状態となる。このような発泡空間内で発泡原料が発泡反応することで、基材要切除部１２Ａと表皮材要切除部１６Ａとの間を含む発泡空間の全体に発泡体１４が充満した状態に形成される(図１、図５)。   The base material 12 having the base material required cutting portion 12A is set on the base material setting surface 44 of the first molding die 42 holding the slide mold 52 in the first position, while the skin material 16 having the skin material required cutting portion 16A. Is set on the skin setting surface 48 of the second foam molding die 46, and after a predetermined amount of foaming raw material is poured onto the upper surface of the skin material 16, the foam molding die 40 is closed. Accordingly, the base material 12 and the skin material 16 are in close contact with each other to form a sealed state, and the base material required cutting portion 12A and the skin material required cutting portion 16A before breaking and separation are present. Since no opening is formed in the base material 12 and the skin material 16, the foaming space defined between the base material 12 and the skin material 16 is in an airtight state. The foaming raw material undergoes a foaming reaction in such a foaming space, so that the entire foaming space including the space between the base material required cutting portion 12A and the skin material required cutting portion 16A is filled with the foam 14. (FIGS. 1 and 5).

発泡空間内における発泡体１４の発泡成形が完了したら、前述した流体圧シリンダ５４をロッド５６が前進するよう制御して、スライド型５２を基材セット面４４から前進させる。これにより、先ず基材要切除部１２Ａだけが外側から押圧されるため、破断予定部２０に応力が集中してこの破断予定部２０が破断して、基材要切除部１２Ａが基材１２から破断・分離するようになる(図６)。   When the foam molding of the foam 14 in the foaming space is completed, the above-described fluid pressure cylinder 54 is controlled so that the rod 56 advances, and the slide mold 52 is advanced from the base material set surface 44. As a result, only the base material required cutting portion 12A is first pressed from the outside, so that stress concentrates on the planned fracture portion 20, the planned fracture portion 20 breaks, and the base material required cutting portion 12A is removed from the base material 12. It breaks and separates (FIG. 6).

次いで基材要切除部１２Ａが基材１２から破断した後は、前述したスライド型５２が更に前進移動することに伴い、分離後の基材要切除部１２Ａは発泡体１４の側へ押されて移動するので、基材要切除部１２Ａと表皮材要切除部１６Ａとの間に位置する発泡体要切除部１４Ａが押縮されるようになる(図６,図７)。この際に、基材要切除部１２Ａの外縁ライン(トリミングラインＴＬ)に沿って延設した前述の尖端突片２２が、発泡体１４へ楔状に食い込みながら前進するため該発泡体１４を開裂的に押切るようになり、発泡体１４は基材要切除部１２Ａの前進と共にトリミングラインＴＬに沿って破断するようになる。   Next, after the base material required cutting portion 12A is broken from the base material 12, the separated base material required cutting portion 12A is pushed toward the foam 14 as the slide mold 52 further moves forward. Since it moves, the foam required cutting part 14A located between the base material required cutting part 12A and the skin material required cutting part 16A comes to be compressed (FIGS. 6 and 7). At this time, since the above-mentioned pointed protrusion 22 extending along the outer edge line (trimming line TL) of the base material required cutting portion 12A advances while wedged into the foam 14, the foam 14 is cleaved. The foam 14 breaks along the trimming line TL as the base material required cutting portion 12A advances.

そして、スライド型５２が第２位置に到来する直前に、発泡体１４が完全に押切られるので発泡体要切除部１４Ａが発泡体１４から破断・分離するようになる。更に、スライド型５２が第２位置へ到来すると、尖端突片２２の先端が第２成形型４６における表皮セット面４８の凸部４８Ａに当接し、これにより該尖端突片２２が表皮材１６の表皮脆弱部３２を押切るため、表皮材要切除部１６Ａが表皮材１６から破断・分離するようになる(図７)。従って、基材要切除部１２Ａ、発泡体要切除部１４Ａおよび表皮材要切除部１６Ａは、トリミングラインＴＬに沿って基材１２、発泡体１４および表皮材１６から夫々分離するに至る。   And, just before the slide mold 52 arrives at the second position, the foam 14 is completely cut off, so that the foam-required cut portion 14A is broken and separated from the foam 14. Further, when the slide mold 52 arrives at the second position, the tip of the pointed projecting piece 22 comes into contact with the convex portion 48A of the skin setting surface 48 of the second forming mold 46, whereby the pointed projecting piece 22 of the skin material 16 is brought into contact. In order to cut through the fragile skin portion 32, the skin material required excision portion 16A breaks and separates from the skin material 16 (FIG. 7). Therefore, the base material required cut portion 12A, the foam required cut portion 14A, and the skin material required cut portion 16A are separated from the base material 12, the foam 14 and the skin material 16 along the trimming line TL, respectively.

なお、スライド型５２が基材要切除部１２Ａを押圧している状態においては、段部２８と凸縁部５８とが係合していることにより、基材１２(基材陥凹部２４)の撓曲的な変形が好適に規制される。従って、基材１２に形成された開口部の端縁が、この開口部を貫通しながらスライド移動するスライド型５２の側面に接触する不都合が回避される。   In the state where the slide mold 52 is pressing the base material required cutting portion 12A, the step portion 28 and the convex edge portion 58 are engaged with each other, whereby the base material 12 (base material recessed portion 24) is engaged. Flexural deformation is preferably regulated. Therefore, the inconvenience that the edge of the opening formed in the substrate 12 contacts the side surface of the slide mold 52 that slides while passing through the opening is avoided.

前述したトリミング作業が完了したら、スライド型５２を第１位置へ後退復帰させた後、発泡成形型４０を型開きして成形が完了した発泡成形部材を脱型する。そして、基材１２、発泡体１４および表皮材１６から分離した基材要切除部１２Ａ、発泡体要切除部１４Ａおよび表皮材要切除部１６Ａを一体的に取り除くことで、発泡成形部材１０の所要位置に取付開口部１８が開設される(図８)。   When the above-described trimming operation is completed, the slide mold 52 is retracted and returned to the first position, and then the foam mold 40 is opened to remove the foam molded member that has been molded. And the base material required cutting part 12A, the foam required cutting part 14A and the skin material required cutting part 16A separated from the base material 12, the foam 14 and the skin material 16 are integrally removed, so that the foam molding member 10 is required. A mounting opening 18 is opened at the position (FIG. 8).

このように、本実施例に係る発泡成形部材のトリミング構造では、基材１２と基材要切除部１２Ａとの境界ラインに沿って破断予定部２０を設けると共に、この基材要切除部１２Ａに発泡体１４および表皮材１６を破断し得る尖端突片２２を設けることで、簡単な構成であるスライド型５２を設けた発泡成形型４０の該スライド型５２の押圧により、基材要切除部１２Ａ、発泡体要切除部１４Ａおよび表皮材要切除部１６Ａを簡易かつ正確に破断・分離し得る。すなわち発泡成形型４０は、基材セット面４４に対して進退可能なスライド型５２を配設した簡単かつ低廉な構成とするだけでよく、加熱装置や切断刃装置等からなる複雑かつ高価なトリミング機構を具備する必要がないため、設備費用が低く抑えられて発泡成形部材の成形コストを低減し得る。また、発泡成形型４０のメンテナンスも殆ど必要としないため、発泡成形部材の成形効率を高め得る。   As described above, in the trimming structure of the foam molded member according to the present embodiment, the fracture planned portion 20 is provided along the boundary line between the base material 12 and the base material required cutting portion 12A, and the base material required cutting portion 12A is provided. By providing the pointed projecting piece 22 that can break the foam 14 and the skin material 16, the base-removed portion 12 </ b> A is required by pressing the slide mold 52 of the foam mold 40 provided with the slide mold 52 having a simple configuration. The foam required cutting portion 14A and the skin material required cutting portion 16A can be easily and accurately broken and separated. That is, the foaming mold 40 only needs to have a simple and inexpensive configuration in which a slide mold 52 that can advance and retreat with respect to the base material set surface 44 is disposed, and a complicated and expensive trimming that includes a heating device and a cutting blade device. Since it is not necessary to provide a mechanism, the equipment cost can be kept low and the molding cost of the foam molded member can be reduced. Moreover, since the maintenance of the foam molding die 40 is hardly required, the molding efficiency of the foam molded member can be improved.

なお前述した実施例では、発泡成形部材１０に通口状の取付開口部１８を開設するためのトリミング構造につき例示したが、本願が対象とするトリミング構造は、発泡成形部材１０の端末部分を適宜に破断・分離することにも応用可能である。また取付開口部１８は、矩形状に限定されるものではなく、円形状、楕円形状、多角形状、更にはその他の複雑な開口形状であってもよい。   In the above-described embodiment, the trimming structure for opening the opening-like attachment opening 18 in the foam molded member 10 has been illustrated. However, the trimming structure targeted by the present application is suitable for the terminal portion of the foam molded member 10 as appropriate. It can also be applied to breaking and separating. Further, the mounting opening 18 is not limited to a rectangular shape, and may be a circular shape, an elliptical shape, a polygonal shape, or other complicated opening shapes.

また前述した実施例では、基材１２、発泡体１４および表皮材１６からなる３層構造タイプで発泡成形部材１０におけるトリミング構造につき説明したが、本願のトリミング構造は、基材１２および発泡体１４からなる２層構造タイプの発泡成形部材１０においても好適に実施可能である。   In the above-described embodiment, the trimming structure in the foam molded member 10 is described as a three-layer structure type including the base material 12, the foam body 14, and the skin material 16, but the trimming structure of the present application is the base material 12 and the foam body 14. The two-layer structure type foam molded member 10 can be suitably implemented.

本発明に係る発泡成形部材のトリミング構造は、少なくとも所要形状に形成された合成樹脂製の基材と、この基材をセットした発泡成形型により該基材の一側面に形成された発泡体とからなり、基材の基材要切除部および発泡体の発泡体要切除部の夫々を、トリミングラインに沿って該基材および発泡体から破断・分離するようにした発泡成形部材に適用されるもので、具体的にはインストルメントパネルやフロアコンソール等の車両内装部材や、椅子またはソファ等の加工に好適に実施可能である。   The trimming structure of the foam molded member according to the present invention includes a synthetic resin base material formed in at least a required shape, and a foam formed on one side surface of the base material by a foam molding die in which the base material is set. And is applied to a foam molded member in which the base material required cutting portion of the base material and the foam required foam cutting portion are each broken and separated from the base material and the foam along the trimming line. Specifically, it can be suitably applied to processing of vehicle interior members such as instrument panels and floor consoles, and chairs or sofas.

好適実施例に係る発泡成形部材のトリミング構造を、発泡成形型による発泡体の発泡完了状態で例示した概略断面図である。It is the schematic sectional drawing which illustrated the trimming structure of the foaming molding member concerning a suitable example in the foaming completion state of the foam by a foaming mold. 発泡成形型で発泡体を成形した直後(取付開口部の開設前)の発泡成形部材の要部断面図である。FIG. 3 is a cross-sectional view of a main part of a foam molded member immediately after molding a foam with a foam mold (before opening of an attachment opening). (ａ)は、基材要切除部、破断予定部および尖端突片を一体的に形成した予備成形後の基材を背面側から見た部分斜視図、(ｂ)は該基材を上面側から見た部分斜視図である。(a) is the partial perspective view which looked at the base material after the preforming which formed the base material required cutting part, the fracture | rupture planned part, and the pointed protrusion integrally from the back side, (b) is this base material on the upper surface side It is the fragmentary perspective view seen from. 基材に一体的に形成した尖端突片と、表皮材に一体的に形成した脆弱部との関係を一部破断して示した部分斜視図である。It is the fragmentary perspective view which fractured | ruptured and showed the relationship between the pointed protrusion piece integrally formed in the base material, and the weak part integrally formed in the skin material. 基材および表皮材の間に画成された発泡空間内で発泡体を発泡成形した直後の状態を示した説明断面図である。It is explanatory sectional drawing which showed the state immediately after foam-molding a foam within the foaming space defined between the base material and the skin material. 発泡体の発泡成形が完了した後にスライド型を前進させることで基材要切除部が押圧され、これにより破断予定部が破断して基材要切除部が基材から分離した状態を示した説明断面図である。An explanation showing a state where the base cutting required part is pressed by advancing the slide mold after the foam molding of the foam is completed, whereby the planned cutting part is broken and the base cutting part is separated from the base. It is sectional drawing. 破断予定部での破断後に更にスライド型が前進移動することで、分離後の基材要切除部が発泡体側へ押されて発泡体要切除部を押縮し、この際に尖端突片がトリミングラインに沿って発泡体および表皮材を開裂的に押切る状態を示した説明断面図である。When the slide mold further moves forward after the break at the planned breakage, the base material excision part after separation is pushed to the foam side to compress the foam cut part, and the pointed protrusion is trimmed at this time It is explanatory sectional drawing which showed the state which cuts off a foam and a skin material along a line. トリミング作業の終了による脱型後に、基材要切除部、発泡体要切除部および表皮材要切除部を、基材、発泡体および表皮材から一体的に取り除く状態を示した説明断面図である。It is explanatory sectional drawing which showed the state which removes the base material required cutting part, the foam required cutting part, and the skin material required cutting part integrally from a base material, a foam, and a skin material after demolding by completion | finish of a trimming operation | work. . 基材、発泡体および表皮材からなる３層構造の発泡成形部材であって、付属部品の取付けを図るための取付開口部を所定位置に開設したものを例示している。A foam molded member having a three-layer structure composed of a base material, a foam, and a skin material is illustrated with an attachment opening for attaching an accessory part opened at a predetermined position. 図９に例示した３層構造の発泡成形部材を、取付開口部を開設する前の状態で示した説明断面図である。It is explanatory sectional drawing which showed the foaming molding member of the 3 layer structure illustrated in FIG. 9 in the state before opening an attachment opening part.

符号の説明Explanation of symbols

１０ 発泡成形部材
１２ 基材
１２Ａ 基材要切除部
１４ 発泡体
１４Ａ 発泡体要切除部
１６ 表皮材
１６Ａ 表皮材要切除部
２０ 破断予定部
２２ 尖端突片
４０ 発泡成形型
４４ 基材セット面
５２ スライド型
ＴＬ トリミングライン
DESCRIPTION OF SYMBOLS 10 Foam molding member 12 Base material 12A Base material required cutting part 14 Foam 14A Foam required cutting part 16 Skin material 16A Skin material cutting part 20 Planned fracture part 22 Pointed protrusion 40 Foam molding die 44 Base material setting surface 52 Slide Type TL Trimming line

Claims (2)

少なくとも所要形状に形成された合成樹脂製の基材(12)と、この基材(12)をセットした発泡成形型(40)により該基材(12)の一側面に形成された発泡体(14)とからなり、前記基材(12)の基材要切除部(12A)および発泡体(14)の発泡体要切除部(14A)の夫々を、トリミングライン(TL)に沿って該基材(12)および発泡体(14)から破断・分離するようにした発泡成形部材(10)において、
前記トリミングライン(TL)に沿うよう前記基材(12)に延在し、前記発泡成形型(40)の基材セット面(44)に進退可能に設けたスライド型(52)が前記基材要切除部(12A)を押圧した際に破断する破断予定部(20)と、
前記破断予定部(20)に沿うよう前記基材要切除部(12A)の前記発泡体(14)が形成される側面に延在し、先端が尖った形状に突設された尖端突片(22)とからなり、
前記発泡体(14)の発泡完了後に前記スライド型(52)を基材セット面(44)から前進させることで、先ず前記破断予定部(20)の破断により前記基材要切除部(12A)を前記基材(12)から破断・分離させ、次いで該スライド型(52)の前進に伴って分離後の該基材要切除部(12A)の前記尖端突片(22)で発泡体(14)を押切り、前記発泡体要切除部(14A)を該発泡体(14)から破断・分離させるよう構成した
ことを特徴とする発泡成形部材のトリミング構造。 A foam formed on one side of the base material (12) by a synthetic resin base material (12) formed in at least the required shape and a foaming mold (40) in which the base material (12) is set ( 14), and the base material required cutting portion (12A) of the base material (12) and the foam required cutting portion (14A) of the foam (14) are respectively connected along the trimming line (TL). In the foam molded member (10) designed to break and separate from the material (12) and the foam (14),
A slide die (52) that extends along the trimming line (TL) to the base material (12) and that can be moved forward and backward on the base material set surface (44) of the foaming mold (40) is provided on the base material. The planned fracture part (20) that breaks when pressing the resection part (12A),
A pointed projecting piece extending in a side surface where the foam (14) of the base material required excision part (12A) is formed so as to be along the planned fracture part (20), and projecting in a shape with a pointed tip ( 22)
By advancing the slide mold (52) from the base material set surface (44) after the foaming of the foam (14) is completed, the base material required cutting portion (12A) is first broken by the breakage of the planned breaking portion (20). Is broken and separated from the base material (12), and then the foam (14) at the pointed projecting piece (22) of the base-removed portion (12A) after separation as the slide mold (52) advances. ), And the foam required cutting part (14A) is configured to be broken and separated from the foam (14). 前記発泡成形部材(10)は、前記発泡体(14)の外側に該発泡体(14)を被覆する表皮材(16)を有し、
前記尖端突片(22)で前記発泡体(14)を押切った後、引続いて該尖端突片(22)で前記表皮材(16)を押切り、発泡体要切除部(14A)を被覆した表皮材要切除部(16A)を、前記トリミングライン(TL)に沿って該表皮材(16)から破断・分離させるようにした請求項１記載の発泡成形部材のトリミング構造。
The foam molded member (10) has a skin material (16) for covering the foam (14) on the outside of the foam (14),
After the foam (14) is cut off by the pointed protrusion (22), the skin material (16) is subsequently pressed by the pointed protrusion (22), and the foam required cutting part (14A) is removed. The trimming structure of a foam-molded member according to claim 1, wherein the cut portion (16A) for covering the skin material is broken and separated from the skin material (16) along the trimming line (TL).
JP2004016305A 2004-01-23 2004-01-23 Trimming structure of foaming member Pending JP2005205801A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014129186A1 (en) * 2013-02-20 2014-08-28 ダイキョーニシカワ株式会社 Apparatus for molding foamed molded article integrated with skin, and method for molding foamed molded article integrated with skin by using same
FR3008918A1 (en) * 2013-07-29 2015-01-30 Visteon Global Tech Inc METHOD FOR MANUFACTURING INTERIOR CLAD PART AND CORRESPONDING PIECE
KR101490753B1 (en) 2008-09-16 2015-02-06 현대모비스 주식회사 Making method of instrument panel making apparatus for vehicles
JP7300791B1 (en) * 2023-04-03 2023-06-30 日本省力機械株式会社 Molded product processing method, molded product processing system, and processing apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101490753B1 (en) 2008-09-16 2015-02-06 현대모비스 주식회사 Making method of instrument panel making apparatus for vehicles
WO2014129186A1 (en) * 2013-02-20 2014-08-28 ダイキョーニシカワ株式会社 Apparatus for molding foamed molded article integrated with skin, and method for molding foamed molded article integrated with skin by using same
JP2014159127A (en) * 2013-02-20 2014-09-04 Daikyonishikawa Corp Molding equipment of skin integrated foam molding article and molding method of skin integrated foam molding article using the same
FR3008918A1 (en) * 2013-07-29 2015-01-30 Visteon Global Tech Inc METHOD FOR MANUFACTURING INTERIOR CLAD PART AND CORRESPONDING PIECE
US10150234B2 (en) 2013-07-29 2018-12-11 Reydel Automotive B.V. Method for manufacturing an interior lining part and corresponding part
JP7300791B1 (en) * 2023-04-03 2023-06-30 日本省力機械株式会社 Molded product processing method, molded product processing system, and processing apparatus

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