JPH0531754A - Manufacture of immitation tree and its molding die - Google Patents
Manufacture of immitation tree and its molding dieInfo
- Publication number
- JPH0531754A JPH0531754A JP21274491A JP21274491A JPH0531754A JP H0531754 A JPH0531754 A JP H0531754A JP 21274491 A JP21274491 A JP 21274491A JP 21274491 A JP21274491 A JP 21274491A JP H0531754 A JPH0531754 A JP H0531754A
- Authority
- JP
- Japan
- Prior art keywords
- main body
- tree
- trunk
- mold
- branch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41G—ARTIFICIAL FLOWERS; WIGS; MASKS; FEATHERS
- A41G1/00—Artificial flowers, fruit, leaves, or trees; Garlands
- A41G1/007—Artificial trees
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、クリスマスツリーや
観葉植物、その他の樹木などを模した模造樹木の製造法
と、この製造法に使用する成形用金型に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an imitation tree imitating a Christmas tree, an ornamental plant, other trees, and the like, and a molding die used for this production method.
【０００２】[0002]
【従来の技術】合成樹脂で成形される人工のクリスマス
ツリー等の模造樹木の製造方法は、模造樹木の先端より
下端に至るまで、大小数段に亘る放射状の樹葉取付部材
と、この枝葉取付部材の間隔を調整するための間隔部材
及びスタンドと接合するための下端部材などの少なくと
も１５種類の部材を個々に成形し、これらを手作業によ
って１本の心棒に１個づつ順次組み合わせて完成した模
造樹木としている。2. Description of the Related Art A method for manufacturing an artificial tree such as an artificial Christmas tree molded from a synthetic resin is a radial tree leaf mounting member having a large or small number of steps from the top to the bottom of the tree, and the branch and leaf mounting member. Imitation completed by individually molding at least 15 kinds of members such as a spacing member for adjusting the spacing between the members and a lower end member for joining with a stand, and manually combining them one by one into one mandrel. It is a tree.
【０００３】[0003]
【発明が解決しようとする課題】従来の模造樹木の製造
法は、多くの分割されたパーツを使用して人手によって
組み立てるため、多くの金型を必要とし、人手による労
力を要するわりに生産性がきわめて低いため、模造樹木
の製造法の抜本的改善策が求められているのが現状であ
る。The conventional method for producing imitation trees requires a large number of molds because it is manually assembled by using many divided parts, and the productivity is high even though the manual labor is required. Since it is extremely low, the present situation is that radical improvement measures for the method of producing imitation trees are required.
【０００４】この発明は、従来の模造樹木の製造方法の
叙上の問題点を解決して、模造樹木の枝付き樹幹を成形
用金型で一挙に成形し、この枝付き樹幹の枝体に樹葉部
材を取付けるのみで得られる模造樹木の製造法とこれに
使用する成形用金型を提供することを目的としているも
のである。The present invention solves the above problems of the conventional method for producing an imitation tree, forms a branch with a branch of the imitation tree at once with a molding die, and forms a branch body of the branch with a branch. It is an object of the present invention to provide a method for producing an imitation tree obtained only by attaching a leaf member and a molding die used for the method.
【０００５】[0005]
【課題を解決するための手段】前記の目的を達成するた
めに、この発明の模造樹木の製造法は、１対の分割金型
の閉じ合わせによって形成される樹幹主体形成用キャビ
ティ内の中央に、先端より下端まで貫通する棒状芯材を
内装保持したのち、該樹幹主体形成用キャビティ内に軟
質の熱可塑性合成樹脂成形体を成形しうる溶融樹脂を射
出して前記棒状芯材をインサートした樹幹主体を形成す
ると共に、該樹幹主体形成用キャビティの周囲に、前記
樹幹主体形成用キャビティに連通すると共に、樹幹主体
の先端方向に向けて所定の抜き勾配で放射状に配設した
多数の枝体形成用キャビティ内にも前記溶融樹脂を射出
して樹幹主体の外周部に放射状に延びる多数の可撓性の
枝体を一体化した枝付き樹幹を成形し、前記枝体の可撓
性を利用して型開きした分割金型から前記枝付き樹幹を
取り出すことを特徴とするものである。In order to achieve the above-mentioned object, the method for producing an imitation tree of the present invention has a center in a trunk main body forming cavity formed by closing a pair of split molds. , A tree-like core in which a rod-shaped core material penetrating from the tip to the lower end is held internally, and a molten resin capable of molding a soft thermoplastic synthetic resin molded body is injected into the cavity for forming the tree-body main body to insert the rod-shaped core material Forming a main body, forming a plurality of branch bodies around the cavity for forming a main body of the trunk, communicating with the cavity for forming the main body of a trunk, and radially arranged at a predetermined draft toward the tip direction of the main body of the trunk The molten resin is injected also into the cavity for molding to form a tree trunk with branches integrally formed with a large number of radially extending flexible branches on the outer periphery of the trunk, and the flexibility of the branches is utilized. Type opening It is characterized in that from the split molds retrieving the sidearm trunk.
【０００６】一方、この発明の模造樹木の成形用金型
は、１対の分割金型の閉じ合わせ面の中央部に、成形せ
んとする樹幹主体の長さ方向の半体を構成する凹部をそ
れぞれ形成し、閉じ合わせた金型の前記各凹部によって
内部に棒状芯材を内装保持する余地を残し、かつこの棒
状芯材をインサート成形しうる樹幹主体形成用キャビテ
ィを形成すると共に、該樹幹主体形成用キャビティ内に
通ずる溶融樹脂の射出通路と、前記樹幹主体形成用キャ
ビティに連通して各分割金型の閉じ合わせ面及び各金型
内に樹幹主体形成用キャビティの先端方向に向けて所定
の抜き勾配を保った多数の枝体形成用キャビティを配設
し、これら各枝体形成用キャビティの各先端に金型の外
部に開口する脱気孔を設けたことを特徴とするものであ
る。On the other hand, in the mold for molding the imitation tree of the present invention, a concave portion which constitutes a half body in the length direction of the trunk main body to be molded is formed in the central portion of the closing surfaces of the pair of split molds. While leaving a room for internally holding the rod-shaped core material by each of the recesses of the molds formed and closed, and forming a trunk main body forming cavity capable of insert molding the rod-shaped core material, A molten resin injection passage communicating in the forming cavity, a closing surface of each split mold communicating with the trunk main body forming cavity and a predetermined direction toward the tip direction of the trunk main body forming cavity in each mold. It is characterized in that a large number of branch body forming cavities that maintain a draft are arranged, and deaeration holes that open to the outside of the mold are provided at the respective tips of these branch body forming cavities.
【０００７】この発明の模造樹木の製造法において、枝
付き樹幹の成形に使用する合成樹脂は、軟質のポリ塩化
ビニル等など成形によって軟質の成形体を形成すること
ができる熱可塑性合成樹脂で、樹幹主体にインサート成
形する棒状芯体は、鋼材などからなる適宜の太さの丸棒
が好ましい。In the method for producing an imitation tree of the present invention, the synthetic resin used for forming the branched trunk is a thermoplastic synthetic resin capable of forming a soft molded body by molding such as soft polyvinyl chloride, The rod-shaped core body that is insert-molded mainly on the trunk is preferably a round rod made of steel or the like and having an appropriate thickness.
【０００８】この発明の模造樹木の成形用金型におい
て、樹幹主体形成用キャビティ及び枝体形成用キャビテ
ィの内面には、樹木の外皮に似せた筋や凹凸等の柄模様
を適宜に形成することが望ましい。In the mold for molding an imitation tree of the present invention, pattern patterns such as streaks and irregularities similar to the outer skin of a tree are appropriately formed on the inner surfaces of the cavity for main trunk formation and the cavity for branch body formation. Is desirable.
【０００９】成形用金型に配設する溶融樹脂の射出通路
は、１対の分割金型の閉じ合せ面に形成した溝が閉じ合
せた分割金型によって射出通路を形成してもよく、分割
金型の一方もしくは双方に穿孔によって射出通路を形成
してもよく、要は金型の外部から樹幹形成用キャビティ
内に通ずる１本乃至それ以上の射出通路を設ければよ
い。The injection passage of the molten resin disposed in the molding die may be formed by a divided die in which the grooves formed in the closing surfaces of the pair of divided dies are closed. The injection passage may be formed by punching in one or both of the molds, and in short, one or more injection passages may be provided which communicate with the inside of the trunk forming cavity from the outside of the mold.
【００１０】分割金型に形成する枝体形成用キャビティ
は、樹幹主体形成用キャビティの先端側の軸心とのなす
角度が実質的に２０°以上の鋭角をとなるようにするこ
とが好ましく、この角度が２０°よりも小さいと、無理
な取り出しによって枝体を損傷する可能性があるのみな
らず、枝体に復元不能な屈曲などの障害が生じるおそれ
がある。It is preferable that the branch body forming cavity formed in the split mold has an acute angle of substantially 20 ° or more with the axial center on the tip side of the trunk main body forming cavity. If this angle is less than 20 °, not only may the branch body be damaged by forcible removal, but there is also the risk that the branch body may be damaged such as irreversible bending.
【００１１】分割金型に形成する脱気孔は、各キャビテ
ィ内のガスの通過は許すが、溶融樹脂は通過させない程
度の微細な通孔で、分割金型の閉じ合せ面に形成した枝
体成形用キャビティに形成する脱気孔は、枝体形成用キ
ャビティを形成するための凹部に連設して金型外部に導
かれた微細な凹溝が分割金型の閉じ合せ面において所定
の脱気孔を形成するようにし、穿孔によって各分割金型
に形成した枝体形成用キャビティの脱気孔は、該キャビ
ティの先端部より金型外部に通じる微細な通孔で構成さ
れた脱気孔を形成するものである。The degassing holes formed in the split mold are minute through holes that allow the gas in each cavity to pass through but do not allow the molten resin to pass through. The branch body formed on the closed surface of the split mold. The deaeration holes formed in the cavity for use are connected to the recesses for forming the branch body forming cavities, and the fine grooves introduced to the outside of the mold form predetermined deaeration holes on the closing surface of the split mold. The degassing holes of the branch body forming cavities formed by punching in each of the divided molds form the degassing holes composed of minute through holes that communicate from the tip of the cavity to the outside of the mold. is there.
【００１２】[0012]
【作用】この発明の模造樹木の製造方法は、１対の分割
金型の閉じ合せ面に形成した樹幹主体形成用キャビテイ
内に、溶融した軟質熱可塑性合成樹脂を射出して棒状芯
材によって自立性を付与した樹幹主体をインサート成形
すると共に、樹幹主体形成用キャビテイに連通して形成
した多数の枝体形成用キャビティにも前記溶融樹脂を射
出することによって、軟質の熱可塑性合成樹脂の持つ可
撓性をそのまゝ保持した多数の枝体を一体化した枝付き
樹幹を形成することができる。According to the method for producing an imitation tree of the present invention, a molten soft thermoplastic synthetic resin is injected into a cavity for forming a trunk main body formed on the closed surfaces of a pair of split molds and self-supported by a rod-shaped core material. Of the soft thermoplastic synthetic resin by insert-molding the trunk main body to which the properties are given and by injecting the molten resin into a large number of branch body forming cavities formed in communication with the trunk main body forming cavity. It is possible to form a tree trunk with branches that integrates a large number of branch bodies that retain their flexibility.
【００１３】この分割金型の型開きで枝付き樹幹を取り
出す場合に、分割金型の閉じ合せ面に形成した樹幹主体
は、型開きによって容易に取り出すことができると共
に、枝体形成用キャビティ内にアンダーカットの状態で
成形された枝体は、該枝体の持つ可撓性を利用して型開
きした分割金型から抜き出すもので、樹幹主体の先端側
の軸心に対する各枝体の傾斜角度を所定の角度（好まし
くは２０°以上）に保持することによって所定の抜き勾
配が確保されて枝体を損傷することなく容易かつ確実に
取り出すことができる。When the tree trunk with branches is taken out by opening the split mold, the trunk main body formed on the closing surface of the split mold can be easily taken out by opening the mold and the branch forming cavity The branch body formed in the undercut state is taken out from the split mold that is opened by utilizing the flexibility of the branch body. The inclination of each branch body with respect to the axial center of the tip side of the trunk main body. By holding the angle at a predetermined angle (preferably 20 ° or more), a predetermined draft can be secured and the branch body can be easily and reliably taken out without damaging the branch body.
【００１４】この発明の模造樹木の成形用金型は、１対
の分割金型内に軟質の熱可塑性の溶融樹脂を射出するだ
けで、樹幹主体に多数の枝体を一体化した枝付き樹幹を
ワンショットで得ることができる。その際、溶融樹脂の
射出によって樹幹主体形成用キャビティ及び枝体形成用
キャビティ内に存在するガスは、枝体形成用キャビティ
の先端に形成した脱気孔を経て金型外部に排気されるの
でガスの停滞による成形の不手際がなく、確実な枝付き
樹幹を得ることができるものである。The mold for molding the imitation tree of the present invention is a tree trunk with branches, in which a large number of branches are integrated into the tree trunk by simply injecting a soft thermoplastic molten resin into a pair of split molds. Can be obtained in one shot. At that time, the gas existing in the trunk main body forming cavity and the branch body forming cavity due to the injection of the molten resin is exhausted to the outside of the mold through the degassing hole formed at the tip of the branch body forming cavity, It is possible to obtain a reliable trunk with branches without forming trouble due to stagnation.
【００１５】[0015]
【実施例】以下、この発明の模造樹木の製造法を使用し
たクリスマスツリーの製造例を添付の図面に基づいて詳
細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of manufacturing a Christmas tree using the imitation tree manufacturing method of the present invention will be described below in detail with reference to the accompanying drawings.
【００１６】図１は、この発明の製造法によって得られ
た枝付き樹幹を使用して形成したクリスマスツリーの斜
視図である。クリスマスツリー１は、樹幹主体３の外周
に多数の枝体４を逆傘骨状に一体成型した枝付き樹幹２
と、前記枝体４の先端部と係合する係合部７を基端に形
成した樹葉部材６と、樹幹主体３の基端部を固定して枝
付き樹幹２を直立保持するスタンド８とから構成されて
いる。FIG. 1 is a perspective view of a Christmas tree formed by using a branched trunk obtained by the manufacturing method of the present invention. The Christmas tree 1 has a tree trunk 2 with a branch main body 3 and a large number of branches 4 integrally molded in the shape of an inverted umbrella.
A tree member 6 having a base end of an engaging portion 7 for engaging the tip end of the branch body 4, and a stand 8 for fixing the base end portion of the trunk main body 3 to hold the tree trunk 2 with branches upright. It consists of
【００１７】枝付き樹幹２を構成する樹幹主体３は、基
端部から先端部方向に適宜の範囲で金属の丸棒からなる
剛性のある棒状心材５をインサートして、先端側に向け
て次第に先細りしたもので、枝体４は樹幹主体３の高さ
の方向に多段（実施例においては４段）に亘って設けら
れる共に、枝体４の先端は樹幹主体３の外周部から先端
方向に向いて斜め上方に一体的に設けたものである。The trunk main body 3 constituting the trunk 2 with branches inserts a rigid rod-shaped core material 5 made of a metal round bar in an appropriate range from the base end portion to the tip end portion, and gradually extends toward the tip end side. It is tapered, and the branch bodies 4 are provided in multiple steps (4 steps in the embodiment) in the height direction of the trunk main body 3, and the tips of the branch bodies 4 extend from the outer peripheral portion of the trunk main body 3 in the tip direction. It is provided integrally diagonally upward.
【００１８】枝体４は、図３で特に明らかなように、別
途形成した樹葉部材６の基端の係合部７に嵌入させて樹
葉部材６を容易に離脱しないように係合させるため、先
端を円錐状の突部９とし、また樹葉部材６の基端もこの
円錐状に合致した嵌入孔からなる係合部７を形成してい
る。As is particularly apparent from FIG. 3, the branch body 4 is fitted into the engaging portion 7 at the base end of the separately formed tree member 6 to engage the tree member 6 so as not to easily disengage. The tip end is a conical projection 9, and the base end of the tree member 6 is also formed with an engagement portion 7 formed of a fitting hole conforming to this conical shape.
【００１９】樹幹主体３は、図４で特に明らかなよう
に、スタンド８に確実に挿着保持するために、基端部に
テーパー状に拡がった鍔部１０を形成し、その下部に段
部を介して周面に縦方向のローレット状の凹凸条を有す
る筒状の嵌入部１１を形成したものである。As shown in FIG. 4, the trunk main body 3 has a tapered flange 10 at the base end in order to securely insert and hold it on the stand 8 and a stepped part at the bottom thereof. A cylindrical fitting portion 11 having vertical knurled concave-convex strips is formed on the peripheral surface thereof via.
【００２０】枝付き樹幹２は、樹幹主体３にインサート
される棒状心材５を除いては、ポリ塩化ビニルのごとき
軟質の熱可塑性合成樹脂の射出成形によって得られ、樹
幹主体３はインサートされた棒状心材５によって簡単に
は曲折しないが、枝体４は適度な可撓性により、復元可
能に撓屈することができるものである。The trunk 2 with branches is obtained by injection molding of a soft thermoplastic synthetic resin such as polyvinyl chloride, except for the rod-shaped core material 5 which is inserted into the trunk main body 3, and the trunk main body 3 is an inserted rod Although it is not easily bent by the core material 5, the branch body 4 is able to be restored and flexed by appropriate flexibility.
【００２１】かゝる枝付き樹幹２は、以下に述べる射出
成形のための成形用金型によって成形される。すなわ
ち、図２に示すように、成形用金型２０は閉じ合わせに
よって単一の成形用金型となりうる２個の分割金型２
１，２１から構成されたもので、その一方若しくは双方
が矢視の方向に移動することによって閉じ合せ面２２，
２２が閉じ合わされ、逆方向に移動することによって型
開きするものである。The tree trunk 2 with such a branch is molded by a molding die for injection molding described below. That is, as shown in FIG. 2, the molding die 20 is divided into two molding dies 2 which can be formed into a single molding die.
1 and 21, one or both of which are moved in the direction of the arrow to close the mating surfaces 22,
22 is closed, and the mold is opened by moving in the opposite direction.
【００２２】前記閉じ合せ面２２，２２には、樹幹主体
３を長さの方向に沿って二つ割りして各半体とした形状
の樹幹主体形成用の凹部２４，２４がそれぞれ形成さ
れ、閉じ合せた分割金型２１，２１の凹部２４，２４に
よって金型内に樹幹主体３の外郭形状に一致した樹幹主
体形成用キャビティ２３を形成している。この各閉じ合
せ面２２，２２には、前記凹部２４，２４に連らなって
枝体形成用の凹部２８，２８を形成し、閉じ合せた分割
金型２１，２１の凹部２８，２８によって枝体形成用の
キャビティ２７を設けている。The closing surfaces 22 and 22 are provided with recesses 24 and 24 for forming a trunk main body, each of which has a shape in which the trunk main body 3 is divided into two along the length direction to form each half body. The recesses 24, 24 of the divided molds 21, 21 form a trunk main body forming cavity 23 that matches the outer shape of the trunk main body 3 in the mold. On each of the closing surfaces 22 and 22, recesses 28 and 28 for forming a branch body are formed so as to be connected to the recesses 24 and 24, and the branches are formed by the recesses 28 and 28 of the closed split molds 21 and 21. A cavity 27 for forming a body is provided.
【００２３】各分割金型２１，２１には、前記枝体形成
用のキャビティ２７とは別個に、前記樹幹主体形成用の
凹部２４，２４に連通する枝体形成用キャビティ２９を
形成しているものである。In each of the split molds 21 and 21, a branch body forming cavity 29 communicating with the trunk body forming recesses 24 and 24 is formed separately from the branch body forming cavity 27. It is a thing.
【００２４】しかして、樹幹主体形成用キャビティ２３
の基端には、分割金型２１，２１の閉じ合せによって形
成される溶融樹脂の射出通路２５を、先端には溶融樹脂
の射出通路２６をそれぞれ設け、金型の基端と先端の双
方から溶融樹脂を射出するように構成している。Thus, the trunk main body forming cavity 23
A molten resin injection passage 25 formed by closing the split molds 21 and 21 is provided at the base end of the mold, and a molten resin injection passage 26 is provided at the front end of the mold. It is configured to inject a molten resin.
【００２５】分割金型２１，２１の閉じ合せ面２２，２
２には、前記した凹部２８，２８の先端部から金型外部
に通ずる微細幅の凹溝を設けて脱気孔３０とし、枝体形
成用キャビティ２９の先端部から金型外部に通じる微細
な通孔を設けて脱気孔３１としている。これらの脱気孔
３０，３１は、気体の通過は許すが溶融樹脂は通過させ
ない程度の微細な通孔である。Closing surfaces 22, 2 of split molds 21, 21
2 is provided with a groove having a fine width that communicates with the outside of the mold from the tips of the above-mentioned recesses 28, 28 to form a deaeration hole 30, and a fine passage leading from the tip of the branch body forming cavity 29 to the outside of the mold. A hole is provided to form the deaeration hole 31. These degassing holes 30 and 31 are minute through holes that allow passage of gas but do not allow molten resin to pass through.
【００２６】樹幹主体形成用キヤビティ２３は、その中
央部に基端部から先端部の適宜の位置に至るまでの間に
棒状芯体５を内装保持するものである。したがって、こ
の棒状芯体５を配置した樹幹主体形成用キャビティ２３
は、この棒状芯体５を内装する余地を残し、しかもこの
棒状芯体５の周囲を射出した樹脂で覆うことができるに
足る径のものである。The trunk main body forming cavity 23 internally holds the rod-shaped core body 5 in the central portion thereof from the base end portion to an appropriate position of the tip end portion. Therefore, the trunk main body forming cavity 23 in which the rod-shaped core body 5 is arranged
Has a diameter large enough to leave room for the interior of the rod-shaped core 5 and to cover the periphery of the rod-shaped core 5 with the injected resin.
【００２７】枝体形成用キャビテイ２７，２９は、樹幹
主体形成用キャビティ２３の軸心より先端側の斜め上方
に向って所定の抜き勾配を保って設けられる。かゝる抜
き勾配によっても離型時の障害になるアンダーカットを
当然形成しているが、枝体形成用キャビティ２７，２９
によって成形される枝体４は、芯材がインサートされて
おらず充分な可撓性を有している。したがって、この可
撓性を利用して枝付き樹幹２を取り出すことができるよ
うに、樹幹主体形成用キャビティ２３の先端側の軸心と
のなす角度が実質的に２０°以上の鋭角をとなるように
することが好ましく、この角度が２０°よりも小さい
と、無理な取り出しによって枝体を損傷する可能性があ
るのみならず、枝体に復元不能な屈曲などの障害が生じ
るおそれがある。The branch body forming cavities 27, 29 are provided at a predetermined draft angle obliquely upward to the tip side from the axial center of the trunk main body forming cavity 23. The undercuts, which hinder the release from the mold, are naturally formed by such drafts, but the branch body forming cavities 27, 29 are formed.
The branch body 4 formed by is not inserted with a core material and has sufficient flexibility. Therefore, in order that the tree trunk 2 with a branch can be taken out by utilizing this flexibility, the angle formed with the axial center of the tip side of the tree trunk main body forming cavity 23 becomes an acute angle of substantially 20 ° or more. If the angle is smaller than 20 °, not only the branch body may be damaged by forcible removal, but also the branch body may be damaged such as irreversible bending.
【００２８】前記のように、枝体４の先端には、樹葉部
材６の基端の係合部７に嵌入させて樹葉部材６を容易に
離脱しないように係合させる目的で円錐状の突部９を形
成しているので、枝体形成用キャビティ２７，２９の先
端もかゝる円錐状突部に合致したキャビティの形状とす
るものである。なお、キャビティ２９の先端に形成する
円錐状の突部に合致するキャビティの形状は、成形後の
枝体４の離脱が可能な限度において形成するものであ
る。また、樹幹主体３の基端部には、スタンド８に確実
に挿着保持するための鍔部１１とその下部に段部を付し
て周面に縦方向のローレット状の凹凸条を刻設している
ために、前記成形用金型２０の樹幹主体形成用キャビテ
ィ２３の基端部もかゝる鍔部と、嵌入部を形成すること
ができる形状としている。As described above, the tip of the branch body 4 is fitted into the engaging portion 7 at the base end of the tree member 6 so that the tree member 6 is engaged so as not to be easily disengaged. Since the portion 9 is formed, the tips of the branch body forming cavities 27 and 29 are also shaped to match the conical projections. The shape of the cavity that matches the conical projection formed at the tip of the cavity 29 is formed to the extent that the branch body 4 after molding can be separated. In addition, at the base end of the trunk main body 3, a flange 11 for securely inserting and holding the stand 8 and a stepped portion at the lower part thereof are provided, and a circumferential knurled concave-convex line is formed on the peripheral surface. Therefore, it has a shape capable of forming a fitting portion and a brim portion, which is also the base end portion of the trunk main body forming cavity 23 of the molding die 20.
【００２９】かゝる構造の成形用金型２０を使用した枝
付き樹幹２の製造について以下に述べる。まず、分割金
型２１，２１を型開きした状態で、その一方の金型２１
の樹幹主体形成用の凹部２４内に棒状芯材５を適宜の係
止手段で保持して分割金型２１，２１を矢視の方向に移
動させて閉じ合せたのち、この閉じ合せによって形成さ
れる基端部の射出通路２５と、上端部の射出通路２６と
から図示しない射出成形機によってポリ塩化ビニルを溶
融状態で射出する。この射出によって樹幹主体形成用キ
ャビティ２３内に溶融樹脂が充満し、続いて各枝体形成
用キャビティ２７，２９内にも溶融樹脂が射出される。
その際、閉じ合せた金型２０の各キャビティ２３，２
７，２９の内部の空気や成形時に発生したガスは、脱気
孔３０及び３１を通じて金型２０の外部に容易に排除さ
れて溶融樹脂を各キャビティ内にくまなく密に射出する
ことができる。また、樹幹主体形成用キャビティ２３に
内装した棒状芯体５は、周囲が溶融樹脂で包まれてイン
サート成形によって一体化され、かくして金型２０の内
部に前記の図１における枝付き樹幹２を形成することが
できる。The production of the tree 2 with a branch using the molding die 20 having such a structure will be described below. First, with the split molds 21 and 21 opened, one mold 21
The rod-shaped core material 5 is held in the recess 24 for forming the main trunk of the tree by an appropriate locking means, the split molds 21 and 21 are moved in the direction of the arrow and closed, and then formed by this closing. Polyvinyl chloride is injected in a molten state from an injection passage 25 at the base end portion and an injection passage 26 at the upper end portion by an injection molding machine (not shown). By this injection, the molten resin is filled in the trunk main body forming cavity 23, and subsequently, the molten resin is also injected into the branch body forming cavities 27, 29.
At that time, the cavities 23, 2 of the mold 20 which are closed together
The air inside 7 and 29 and the gas generated at the time of molding are easily removed to the outside of the mold 20 through the degassing holes 30 and 31, and the molten resin can be densely injected into each cavity. In addition, the rod-shaped core body 5 which is housed in the trunk main body forming cavity 23 is wrapped around with a molten resin and integrated by insert molding, thus forming the branched trunk 2 in FIG. 1 inside the mold 20. can do.
【００３０】射出した樹脂が冷却固化した後に分割金型
２１，２１を前記と逆の方向に移動させて型開きし、内
部の枝付き樹幹２を分割金型２１，２１より取り出す。
この取り出しによって、分割金型２１，２１内の閉じ合
せ面２２，２２に形成された成形体の部分、すなわち樹
幹主体形成用キャビティ２３と枝体形成用キャビティ２
７とによる成形体は、型開きによって簡単に取り出すこ
とができ、枝体形成用キャビティ２９内で成形された枝
体もアンダーカットの状態で成形されているにもかゝわ
らず、この枝体が所定の抜き勾配を有し、かつ適度の可
撓性を有する軟質合成樹脂のみで成形されているので、
適当に撓屈しながら枝体形成用キャビティ１９から抜き
出すことができ、抜き出した後は復元性によって成形時
の状態に容易に復帰する。なお、図２に記載の枝体は、
途中で枝分かれのないものであるが、図１のように途中
で枝分かれした枝体の場合も、その成形と金型からの取
り出しは前記と同様にして容易に行うことができるもの
である。After the injected resin has cooled and solidified, the split molds 21 and 21 are moved in the opposite direction to the molds to open the mold, and the internal trunk 2 is taken out from the split molds 21 and 21.
By this removal, the parts of the molded body formed on the closing surfaces 22, 22 in the split molds 21, 21, that is, the trunk main body forming cavity 23 and the branch body forming cavity 2
The molded body according to 7 can be easily taken out by opening the mold, and the branched body molded in the branch body forming cavity 29 is also molded in an undercut state. Has a predetermined draft, and is molded only from soft synthetic resin with appropriate flexibility,
It can be pulled out from the branch body forming cavity 19 while being appropriately bent, and after it is pulled out, it can easily return to the state at the time of molding due to the resilience. The branch body shown in FIG. 2 is
Although there is no branching in the middle, even in the case of a branch body branched in the middle as shown in FIG. 1, its molding and removal from the mold can be easily performed in the same manner as described above.
【００３１】[0031]
【発明の効果】この発明の模造樹木の製造方法は、１対
の分割金型の閉じ合せ面に形成した樹幹主体形成用キャ
ビテイ内に溶融した軟質熱可塑性合成樹脂を射出し、樹
幹主体形成用キャビテイ内にあらかじめ内装保持した棒
状芯材によって自立性を付与した樹幹主体をインサート
成形すると共に、樹幹主体形成用キャビテイに連通した
多数の枝体形成用キャビティにも前記溶融樹脂を射出し
て軟質の熱可塑性合成樹脂の持つ可撓性をそのまゝ保持
した枝体を一体化させた枝付き樹幹を形成するものであ
る。EFFECTS OF THE INVENTION The method for producing an imitation tree of the present invention is one in which a soft thermoplastic synthetic resin melted is injected into a trunk main body forming cavity formed on the closed surfaces of a pair of split molds to form a main trunk tree. Insert-molding a trunk main body with self-supporting properties by a rod-shaped core material internally held in advance in the cavity, and injecting the molten resin into a large number of branch body forming cavities communicating with the trunk main body forming cavity to soften it. It forms a tree trunk with branches that integrates the branches that retain the flexibility of thermoplastic synthetic resin.
【００３２】この分割金型を使用して成形した枝付き樹
幹は、アンダーカットの状態で成形された枝体をその可
撓性を利用して枝体を損傷することなく樹幹主体と共に
型開きした分割金型から容易に分離することができ、か
くてワンショットの射出成形動作によって棒状心材をイ
ンサートした強靭な樹幹主体からなる枝付き樹幹を容易
に得ることができるものである。このようにして得た枝
付き樹幹は、別途形成した樹葉部材を枝体の先端に係着
することによって天然の樹木に酷似した模造樹木を安価
に得ることができる。The tree trunk with a branch formed by using this split mold is formed by opening the branch body formed in an undercut state together with the main body of the trunk without damaging the branch body by utilizing its flexibility. It can be easily separated from the split mold, and thus, a one-shot injection molding operation can easily obtain a branched trunk having a strong trunk main body with a rod-shaped core inserted. The tree trunk with branches thus obtained can inexpensively obtain an imitation tree that closely resembles a natural tree by attaching a separately formed tree member to the tip of the branch body.
【００３３】この発明の模造樹木の成形用金型は、１対
の分割金型の閉じ合わせ面に、樹幹主体の長さ方向の半
体を構成する凹部を形成し、閉じ合わせた金型の各凹部
によって内部に棒状芯材のインサート成形が可能な樹幹
主体形成用のキャビティを形成すると共に、樹幹主体形
成用キャビティに通ずる溶融樹脂の射出通路と、樹幹主
体形成用キャビティに連通して各分割金型の閉じ合わせ
面及び各金型内に所定の抜き勾配を保った多数の枝体形
成用キャビティを配設し、これら枝体形成用キャビティ
の先端に金型の外部に開口する脱気孔を設けたものであ
る。A mold for molding an imitation tree of the present invention is a mold in which a pair of split molds are provided with a recessed portion which constitutes a half body in the longitudinal direction of a tree trunk main body, and which is closed. Each recess forms an inner cavity for forming a tree trunk main body that allows insert molding of a rod-shaped core material, and a molten resin injection passage leading to the tree trunk main body forming cavity and a cavity for forming the tree trunk main body are communicated with each other. A large number of branch body forming cavities that maintain a predetermined draft in the mold closing surface and each mold are provided, and degassing holes that open to the outside of the mold are provided at the tips of these branch body forming cavities. It is provided.
【００３４】この成形用金型によれば、射出通路を経て
射出された溶融樹脂が樹幹主体形成用キャビティで棒状
芯材をインサート成形した樹幹主体を形成し、各枝体形
成用キャビティで枝体を一体化して枝付き樹幹を一挙に
得ることができる。その際、枝体形成用キャビティの先
端に形成した脱気孔から、キャビティ内のガスを金型外
部に排気しつゝて各キャビティ内に樹脂を充満させるこ
とができるため、形成したキャビティの形状に合致した
正確な枝付き樹幹を得ることができるものである。According to this molding die, the molten resin injected through the injection passage forms the trunk main body in which the rod-shaped core material is insert-molded in the trunk main body forming cavity, and the branch body is formed in each branch body forming cavity. Can be integrated to obtain a tree trunk with a branch. At that time, the gas in the cavity can be exhausted to the outside of the mold through the deaeration hole formed at the tip of the branch body forming cavity so that the resin in each cavity can be filled with the shape of the formed cavity. It is possible to obtain an exact branched trunk.
【図１】この発明によって得られる枝付き樹幹を用いた
クリスマスツリーの一例を示す一部切欠き斜視図であ
る。FIG. 1 is a partially cutaway perspective view showing an example of a Christmas tree using a tree trunk with branches obtained according to the present invention.
【図２】この発明の模造樹木の製造法に使用する成形用
金型の一例を示す一部を透視して分解斜視図である。FIG. 2 is an exploded perspective view showing a part of an example of a molding die used in the method for producing an imitation tree according to the present invention in a see-through manner.
【図３】この発明で得られる模造樹木の枝体と樹葉部材
の取付部分を示す拡大断面図である。FIG. 3 is an enlarged cross-sectional view showing an attachment portion of a branch body and a leaf member of the imitation tree obtained by the present invention.
【図４】この発明で得られる模造樹木の樹幹主体の基端
部の拡大斜視図である。FIG. 4 is an enlarged perspective view of the base end portion of the main body of the imitation tree obtained by the present invention.
１ 模造樹木 ２ 枝付き樹幹 ３ 樹幹主体 ４ 枝体 ５ 棒状芯材 ６ 樹葉部材 ７ 係合部 ８ スタンド ９ 円錐状の突部 １１ 嵌入部 ２０ 成形用金型 ２１ 分割金型 ２２ 閉じ合せ面 ２３ 樹幹形成用キャビティ ２４ 凹部 ２５ 射出通路 ２６ 射出通路 ２７ 枝体形成用キャビティ ２８ 凹部 ２９ 枝体形成用キャビティ ３０ 脱気孔 ３１ 脱気孔 1 Imitation tree 2 Branched tree trunks 3 trunk 4 branches 5 Bar-shaped core material 6 Tree members 7 Engagement part 8 stand 9 Conical protrusion 11 Fitting part 20 Mold for molding 21 split mold 22 Closing surface 23 Cavity for stem formation 24 recess 25 injection passage 26 Injection passage 27 Cavity for branch body formation 28 recess 29 Cavity for branch body formation 30 degassing holes 31 Degassing hole
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成３年９月４日[Submission date] September 4, 1991
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Name of item to be amended] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【特許請求の範囲】[Claims]
【請求項７】 前記分割金型は、各分割金型の内部に冷
却用パイプを配設し、該冷却用パイプへの通水により射
出後における各キャビティ内の溶融樹脂を冷却するよう
構成したことを特徴とする特許請求の範囲４記載の模造
樹木の成形用金型。 7. The divided mold is configured such that a cooling pipe is arranged inside each divided mold, and the molten resin in each cavity after injection is cooled by passing water through the cooling pipe. The mold for molding an imitation tree according to claim 4, characterized in that
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】発明の詳細な説明[Name of item to be amended] Detailed explanation of the invention
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】この発明は、クリスマスツリーや
観葉植物、その他の樹木などを模した模造樹木の製造法
と、この製造法に使用する成形用金型に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an imitation tree imitating a Christmas tree, an ornamental plant, other trees, and the like, and a molding die used for this production method.
【０００２】[0002]
【従来の技術】合成樹脂で成形される人工のクリスマス
ツリー等の模造樹木の製造方法は、模造樹木の先端より
下端に至るまで、大小数段に亘る放射状の樹葉取付部材
と、この技葉取付部材の間隔を調整するための間隔部材
及びスタンドと接合するための下端部材などの少なくと
も１５種類の部材を個々に成形し、これらを手作業によ
って１本の心棒に１個づつ順次組み合わせて完成した模
造樹木としている。2. Description of the Related Art A method for manufacturing artificial trees such as artificial Christmas trees molded from synthetic resin is based on radial leaf attachment members ranging from the top to the bottom of the artificial tree and the leaf attachment members. At least 15 types of members such as a spacing member for adjusting the spacing between members and a lower end member for joining with a stand are individually molded, and these are completed by manually combining them one by one into one mandrel. It is an imitation tree.
【０００３】[0003]
【発明が解決しようとする課題】従来の模造樹木の製造
法は、多くの分割されたパーツを使用して人手によって
組み立てるため、多くの金型を必要とし、人手による労
力を要するわりに生産性がきわめて低いため、模造樹木
の製造法の抜本的改善策が求められているのが現状であ
る。The conventional method for producing imitation trees requires a large number of molds because it is manually assembled by using many divided parts, and the productivity is high even though the manual labor is required. Since it is extremely low, the present situation is that radical improvement measures for the method of producing imitation trees are required.
【０００４】この発明は、従来の模造樹木の製造方法の
叙上の問題点を解決して、模造樹木の枝付き樹幹を成形
用金型で一挙に成形し、この技付き樹幹の枝体に樹葉部
材を取付けるのみで得られる模造樹木の製造法とこれに
使用する成形用金型を提供することを目的としているも
のである。The present invention solves the above problems of the conventional method for producing an imitation tree, forms a tree trunk with a branch of the imitation tree at once with a molding die, and forms a branch body of the tree trunk with this technique. It is an object of the present invention to provide a method for producing an imitation tree obtained only by attaching a leaf member and a molding die used for the method.
【０００５】[0005]
【課題を解決するための手段】前記の目的を達成するた
めに、この発明の模造樹木の製造法は、１対の分割金型
の閉じ合わせによって形成される樹幹主体形成用キャビ
ティ内の中央に、先端より下端まで貫通する棒状芯材を
内装保持したのち、該樹幹主体形成用キャビティ内に軟
質の熱可塑性合成樹脂成形体を成形しうる溶融樹脂を射
出して前記棒状芯材をインサートした樹幹主体を形成す
ると共に、該樹幹主体形成用キャビティの周囲に、前記
樹幹主体形成用キャビティに連通すると共に、樹幹主体
の先端方向に向けて所定の抜き勾配で放射状に配設した
多数の枝体形成用キャビティ内にも前記溶融樹脂を射出
して樹幹主体の外周部に放射状に延びる多数の可撓性の
枝体を一体化した枝付き樹幹を成形し、前記枝体の可撓
性を利用して型開きした分割金型から前記枝付き樹幹を
取り出すことを特徴とするものである。In order to achieve the above-mentioned object, the method for producing an imitation tree of the present invention has a center in a trunk main body forming cavity formed by closing a pair of split molds. , A tree-like core in which a rod-shaped core material penetrating from the tip to the lower end is held internally, and a molten resin capable of molding a soft thermoplastic synthetic resin molded body is injected into the cavity for forming the tree-body main body to insert the rod-shaped core material Forming a main body, forming a plurality of branch bodies around the cavity for forming a main body of the trunk, communicating with the cavity for forming the main body of a trunk, and radially arranged at a predetermined draft toward the tip direction of the main body of the trunk The molten resin is injected also into the cavity for molding to form a tree trunk with branches integrally formed with a large number of radially extending flexible branches on the outer periphery of the trunk, and the flexibility of the branches is utilized. Type opening It is characterized in that from the split molds retrieving the sidearm trunk.
【０００６】一方、この発明の模造樹木の成形用金型
は、１対の分割金型の閉じ合わせ面の中央部に、成形せ
んとする樹幹主体の長さ方向の半体を構成する凹部をそ
れぞれ形成し、閉じ合わせた金型の前記各凹部によって
内部に棒状芯材を内装保持する余地を残し、かつこの棒
状芯材をインサート成形しうる樹幹主体形成用キャビテ
ィを形成すると共に、該樹幹主体形成用キャビティ内に
通ずる溶融樹脂の射出通路と、前記樹幹主体形成用キャ
ビティに連通して各分割金型の閉じ合わせ面及び各金型
内に樹幹主体形成用キャビティの先端方向に向けて所定
の抜き勾配を保った多数の枝体形成用キャビティを配設
し、これら各枝体形成用キャビティの各先端に金型の外
部に開口する脱気孔を設けたことを特徴とするものであ
る。On the other hand, in the mold for molding the imitation tree of the present invention, a concave portion which constitutes a half body in the length direction of the trunk main body to be molded is formed in the central portion of the closing surfaces of the pair of split molds. While leaving a room for internally holding the rod-shaped core material by each of the recesses of the molds formed and closed, and forming a trunk main body forming cavity capable of insert molding the rod-shaped core material, A molten resin injection passage communicating in the forming cavity, a closing surface of each split mold communicating with the trunk main body forming cavity and a predetermined direction toward the tip direction of the trunk main body forming cavity in each mold. It is characterized in that a large number of branch body forming cavities that maintain a draft are arranged, and deaeration holes that open to the outside of the mold are provided at the respective tips of these branch body forming cavities.
【０００７】この発明の模造樹木の製造法において、枝
付き樹幹の成形に使用する合成樹脂は、軟質のポリ塩化
ビニル等など成形によって軟質の成形体を形成すること
ができる熱可塑性合成樹脂で、樹幹主体にインサート成
形する棒状芯体は、鋼材などからなる適宜の太さの丸棒
が好ましい。In the method for producing an imitation tree of the present invention, the synthetic resin used for forming the branched trunk is a thermoplastic synthetic resin capable of forming a soft molded body by molding such as soft polyvinyl chloride, The rod-shaped core body that is insert-molded mainly on the trunk is preferably a round rod made of steel or the like and having an appropriate thickness.
【０００８】この発明の模造樹木の成形用金型におい
て、樹幹主体形成用キャビティ及び枝体形成用キャビテ
ィの内面には、樹木の外皮に似せた筋や凹凸等の柄模様
を適宜に形成することが望ましい。In the mold for molding an imitation tree of the present invention, pattern patterns such as streaks and irregularities similar to the outer skin of a tree are appropriately formed on the inner surfaces of the cavity for main trunk formation and the cavity for branch body formation. Is desirable.
【０００９】成形用金型に配設する溶融樹脂の射出通路
は、１対の分割金型の閉じ合せ面に形成した溝が閉じ合
せた分割金型によって射出通路を形成してもよく、分割
金型の一方もしくは双方に穿孔によって射出通路を形成
してもよく、要は金型の外部から樹幹形成用キャビテイ
内に通ずる１本乃至それ以上の射出通路を設ければよ
い。The injection passage of the molten resin disposed in the molding die may be formed by a divided die in which the grooves formed in the closing surfaces of the pair of divided dies are closed. The injection passage may be formed in one or both of the molds by punching, and the point is to provide one or more injection passages that communicate with the trunk forming cavity from the outside of the mold.
【００１０】分割金型に形成する枝体形成用キャビティ
は、樹幹主体形成用キャビティの先端側の軸心とのなす
角度が実質的に２０°以上の鋭角をとなるようにするこ
とが好ましく、この角度が２０°よりも小さいと、無理
な取り出しによって枝体を損傷する可能性があるのみな
らず、枝体に復元不能な屈曲などの障害が生じるおそれ
がある。It is preferable that the branch body forming cavity formed in the split mold has an acute angle of substantially 20 ° or more with the axial center on the tip side of the trunk main body forming cavity. If this angle is less than 20 °, not only may the branch body be damaged by forcible removal, but there is also the risk that the branch body may be damaged such as irreversible bending.
【００１１】分割金型に形成する脱気孔は、各キャビテ
ィ内のガスの通過は許すが、溶融樹脂は通過させない程
度の微細な通孔で、分割金型の閉じ合せ面に形成した枝
体成形用キャビティに形成する脱気孔は、枝体形成用キ
ャビティを形成するための凹部に連設して金型外部に導
かれた微細な凹溝が分割金型の閉じ合せ面において所定
の脱気孔を形成するようにし、穿孔によって各分割金型
に形成した枝体形成用キャビティの脱気孔は、該キャビ
ティの先端部より金型外部に通じる微細な通孔で構成さ
れた脱気孔を形成するものである。The degassing holes formed in the split mold are minute through holes that allow the gas in each cavity to pass through but do not allow the molten resin to pass through. The branch body formed on the closed surface of the split mold. The deaeration holes formed in the cavity for use are connected to the recesses for forming the branch body forming cavities, and the fine grooves introduced to the outside of the mold form predetermined deaeration holes on the closing surface of the split mold. The degassing holes of the branch body forming cavities formed by punching in each of the divided molds form the degassing holes composed of minute through holes that communicate from the tip of the cavity to the outside of the mold. is there.
【００１２】なお、この分割金型には、一般の合成樹脂
射出成形用金型に使用されているように、各分割金型内
に冷却水パイプを通し、射出成形後にこの冷却水パイプ
に自動通水して射出成形後の各キャビティ内の溶融樹脂
を迅速に冷却するようにしてもよい。 また、金型の要
所にキャビティ内に通ずる突出しピンを設けて型開き時
にこの突出しピンを作動させて成形した模造樹木の離型
を助けるようにしてもよく、これらによって模造樹木の
形成サイクルの短縮を図ることができる。 In this split mold, a general synthetic resin is used.
Within each split mold, as used in injection molds
Pass the cooling water pipe to this cooling water pipe after injection molding
Molten resin in each cavity after injection molding by automatically passing water through
May be cooled quickly. Also, the mold
When the mold is opened by providing a protruding pin that communicates with the cavity in the place
Mold release of imitation tree formed by operating this protruding pin on
You may try to help them by these
The formation cycle can be shortened.
【００１３】[0013]
【作用】この発明の模造樹木の製造方法は、１対の分割
金型の閉じ合せ面に形成した樹幹主体形成用キャビティ
内に、溶融した軟質熱可塑性合成樹脂を射出して棒状芯
材によって自立性を付与した樹幹主体をインサート成形
すると共に、樹幹主体形成用キャビティに連通して形成
した多数の枝体形成用キャビティにも前記溶融樹脂を射
出することによって、軟質の熱可塑性合成樹脂の持つ可
撓性をそのまゝ保持した多数の枝体を一体化した枝付き
樹幹を形成することができる。According to the method for producing an imitation tree of the present invention, the molten soft thermoplastic synthetic resin is injected into the trunk main body forming cavity formed on the closed surfaces of the pair of split molds to be self-supported by the rod-shaped core material. Of the soft thermoplastic synthetic resin by inject-molding the trunk main body to which the property is given and injecting the molten resin into a large number of branch body forming cavities formed in communication with the trunk main body forming cavity. It is possible to form a tree trunk with branches that integrates a large number of branch bodies that retain their flexibility.
【００１４】この分割金型の型開きで枝付き樹幹を取り
出す場合に、分割金型の閉じ合せ面に形成した樹幹主体
は、型開きによって容易に取り出すことができると共
に、枝体形成用キャビティ内にアンダーカットの状態で
成形された枝体は、該枝体の持つ可撓性を利用して型開
きした分割金型から抜き出すもので、樹幹主体の先端側
の軸心に対する各枝体の傾斜角度を所定の角度（好まし
くは２０°以上）に保持することによって所定の抜き勾
配が確保されて枝体を損傷することなく容易かつ確実に
取り出すことができる。When a tree trunk with branches is taken out by opening the split mold, the trunk main body formed on the closing surface of the split mold can be easily taken out by opening the mold, and at the same time, in the branch body forming cavity. The branch body formed in the undercut state is taken out from the split mold that is opened by utilizing the flexibility of the branch body. The inclination of each branch body with respect to the axial center of the tip side of the trunk main body. By holding the angle at a predetermined angle (preferably 20 ° or more), a predetermined draft can be secured and the branch body can be easily and reliably taken out without damaging the branch body.
【００１５】この発明の模造樹木の成形用金型は、１対
の分割金型内に軟質の熱可塑性の溶融樹脂を射出するだ
けで、樹幹主体に多数の枝体を一体化した枝付き樹幹を
ワンショットで得ることができる。その際、溶融樹脂の
射出によって樹幹主体形成用キャビティ及び枝体形成用
キャビティ内に存在するガスは、枝体形成用キャビティ
の先端に形成した脱気孔を経て金型外部に排気されるの
でガスの停滞による成形の不手際がなく、確実な枝付き
樹幹を得ることができるものである。A mold for molding an imitation tree of the present invention is a tree trunk with branches in which a large number of branches are integrated into a tree trunk main body only by injecting a soft thermoplastic molten resin into a pair of split molds. Can be obtained in one shot. At that time, the gas existing in the trunk main body forming cavity and the branch body forming cavity due to the injection of the molten resin is exhausted to the outside of the mold through the degassing hole formed at the tip of the branch body forming cavity, It is possible to obtain a reliable trunk with branches without forming trouble due to stagnation.
【００１６】[0016]
【実施例】以下、この発明の模造樹木の製造法を使用し
たクリスマスツリーの製造例を添付の図面に基づいて詳
細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of manufacturing a Christmas tree using the imitation tree manufacturing method of the present invention will be described below in detail with reference to the accompanying drawings.
【００１７】図１は、この発明の製造法によって得られ
た枝付き樹幹を使用して形成したクリスマスツリーの斜
視図である。クリスマスツリー１は、樹幹主体３の外周
に多数の枝体４を逆傘骨状に一体成型した枝付き樹幹２
と、前記枝体４の先端部と係合する係合部７を基端に形
成した樹葉部材６と、樹幹主体３の基端部を固定して枝
付き樹幹２を直立保持するスタンド８とから構成されて
いる。FIG. 1 is a perspective view of a Christmas tree formed by using a branched trunk obtained by the manufacturing method of the present invention. The Christmas tree 1 has a tree trunk 2 with a branch main body 3 and a large number of branches 4 integrally molded in the shape of an inverted umbrella.
A tree member 6 having a base end of an engaging portion 7 for engaging the tip end of the branch body 4, and a stand 8 for fixing the base end portion of the trunk main body 3 to hold the tree trunk 2 with branches upright. It consists of
【００１８】枝付き樹幹２を構成する樹幹主体３は、基
端部から先端部方向に適宜の範囲で金属の丸棒からなる
剛性のある棒状心材５をインサートして、先端側に向け
て次第に先細りしたもので、枝体４は樹幹主体３の高さ
の方向に多段（実施例においては４段）に亘って設けら
れる共に、枝体４の先端は樹幹主体３の外周部から先端
方向に向いて斜め上方に一体的に設けたものである。The trunk main body 3 that constitutes the trunk 2 with branches inserts a rigid rod-shaped core material 5 made of a metal round bar in an appropriate range from the base end portion to the tip end portion, and gradually advances toward the tip end side. It is tapered, and the branch bodies 4 are provided in multiple steps (4 steps in the embodiment) in the height direction of the trunk main body 3, and the tips of the branch bodies 4 extend from the outer peripheral portion of the trunk main body 3 in the tip direction. It is provided integrally diagonally upward.
【００１９】枝体４は、図３で特に明らかなように、別
途形成した樹葉部材６の基端の係合部７に嵌入させて樹
葉部材６を容易に離脱しないように係合させるため、先
端を円錐状の突部９とし、また樹葉部材６の基端もこの
円錐状に合致した嵌入孔からなる係合部７を形成してい
る。As is particularly apparent from FIG. 3, the branch body 4 is fitted into the engaging portion 7 at the base end of the separately formed tree member 6 to engage the tree member 6 so as not to easily disengage. The tip end is a conical projection 9, and the base end of the tree member 6 is also formed with an engagement portion 7 formed of a fitting hole conforming to this conical shape.
【００２０】樹幹主体３は、図４で特に明らかなよう
に、スタンド８に確実に挿着保持するために、基端部に
テーパー状に拡がった鍔部１０を形成し、その下部に段
部を介して周面に縦方向のローレット状の凹凸条を有す
る筒状の嵌入部１１を形成したものである。As shown in FIG. 4, the trunk main body 3 has a taper-shaped flange portion 10 formed at the base end in order to surely insert and hold it on the stand 8, and a stepped portion at the lower portion thereof. A cylindrical fitting portion 11 having vertical knurled concave-convex strips is formed on the peripheral surface thereof via.
【００２１】枝付き樹幹２は、樹幹主体３にインサート
される棒状心材５を除いては、ポリ塩化ビニルのごとき
軟質の熱可塑性合成樹脂の射出成形によって得られ、樹
幹主体３はインサートされた棒状心材５によって簡単に
は曲折しないが、枝体４は適度な可撓性により、復元可
能に撓屈することができるものである。The tree trunk 2 with branches is obtained by injection molding of a soft thermoplastic synthetic resin such as polyvinyl chloride, except for the rod-shaped core material 5 which is inserted into the tree trunk main body 3, and the tree trunk main body 3 is the inserted bar shape. Although it is not easily bent by the core material 5, the branch body 4 is able to be restored and flexed by appropriate flexibility.
【００２２】かゝる枝付き樹幹２は、以下に述べる射出
成形のための成形用金型によって成形される。すなわ
ち、図２に示すように、成形用金型２０は閉じ合わせに
よって単一の成形用金型となりうる２個の分割金型２
１，２１から構成されたもので、その一方若しくは双方
が矢視の方向に移動することによって閉じ合せ面２２，
２２が閉じ合わされ、逆方向に移動することによって型
開きするものである。The tree trunk 2 with such a branch is molded by a molding die for injection molding described below. That is, as shown in FIG. 2, the molding die 20 is divided into two molding dies 2 which can be formed into a single molding die.
1 and 21, one or both of which are moved in the direction of the arrow to close the mating surfaces 22,
22 is closed, and the mold is opened by moving in the opposite direction.
【００２３】前記閉じ合せ面２２，２２には、樹幹主体
３を長さの方向に沿って二つ割りして各半体とした形状
の樹幹主体形成用の凹部２４，２４がそれぞれ形成さ
れ、閉じ合せた分割金型２１，２１の凹部２４，２４に
よって金型内に樹幹主体３の外郭形状に一致した樹幹主
体形成用キャビティ２３を形成している。この各閉じ合
せ面２２，２２には、前記凹部２４，２４に連らなって
枝体形成用の凹部２８，２８を形成し、閉じ合せた分割
金型２１，２１の凹部２８，２８によって枝体形成用の
キャビティ２７を設けている。On the closing surfaces 22 and 22, recesses 24 and 24 for forming a trunk main body, each of which has a shape in which the trunk main body 3 is divided into two along the lengthwise direction to form each half, are formed. The recesses 24, 24 of the divided molds 21, 21 form a trunk main body forming cavity 23 that matches the outer shape of the trunk main body 3 in the mold. On each of the closing surfaces 22 and 22, recesses 28 and 28 for forming a branch body are formed so as to be connected to the recesses 24 and 24, and the branches are formed by the recesses 28 and 28 of the closed split molds 21 and 21. A cavity 27 for forming a body is provided.
【００２４】各分割金型２１，２１には、前記枝体形成
用のキャビティ２７とは別個に、前記樹幹主体形成用の
凹部２４，２４に連通する枝体形成用キャビティ２９を
形成しているものである。In addition to the branch body forming cavity 27, a branch body forming cavity 29 communicating with the trunk main body forming recesses 24, 24 is formed in each of the split molds 21, 21. It is a thing.
【００２５】しかして、樹幹主体形成用キャビティ２３
の基端には、分割金型２１，２１の閉じ合せによって形
成される溶融樹脂の射出通路２５を、先端には溶融樹脂
の射出通路２６をそれぞれ設け、金型の基端と先端の双
方から溶融樹脂を射出するように構成している。Therefore, the cavity 23 for forming the trunk main body is formed.
A molten resin injection passage 25 formed by closing the split molds 21 and 21 is provided at the base end of the mold, and a molten resin injection passage 26 is provided at the front end of the mold. It is configured to inject a molten resin.
【００２６】分割金型２１，２１の閉じ合せ面２２，２
２には、前記した凹部２８，２８の先端部から金型外部
に通ずる微細幅の凹溝を設けて脱気孔３０とし、枝体形
成用キャビティ２９の先端部から金型外部に通じる微細
な通孔を設けて脱気孔３１としている。これらの脱気孔
３０，３１は、気体の通過は許すが溶融樹脂は通過させ
ない程度の微細な通孔である。Closing faces 22, 2 of the split molds 21, 21
2 is provided with a groove having a fine width that communicates with the outside of the mold from the tips of the above-mentioned recesses 28, 28 to form a deaeration hole 30, and a fine passage leading from the tip of the branch body forming cavity 29 to the outside of the mold. A hole is provided to form the deaeration hole 31. These degassing holes 30 and 31 are minute through holes that allow passage of gas but do not allow molten resin to pass through.
【００２７】樹幹主体形成用キヤビティ２３は、その中
央部に基端部から先端部の適宜の位置に至るまでの間に
棒状芯体５を内装保持するものである。したがって、こ
の棒状芯体５を配置した樹幹主体形成用キャビティ２３
は、この棒状芯体５を内装する余地を残し、しかもこの
棒状芯体５の周囲を射出した樹脂で覆うことができるに
足る径のものである。The trunk main body forming cavity 23 internally holds the rod-shaped core body 5 in the central portion thereof from the base end portion to an appropriate position of the tip end portion. Therefore, the trunk main body forming cavity 23 in which the rod-shaped core body 5 is arranged
Has a diameter large enough to leave room for the interior of the rod-shaped core 5 and to cover the periphery of the rod-shaped core 5 with the injected resin.
【００２８】枝体形成用キャビテイ２７，２９は、樹幹
主体形成用キャビティ２３の軸心より先端側の斜め上方
に向って所定の抜き勾配を保って設けられる。かゝる抜
き勾配によっても離型時の障害になるアンダーカットを
当然形成しているが、枝体形成用キャビティ２７，２９
によって成形される枝体４は、芯材がインサートされて
おらず充分な可撓性を有している。したがって、この可
撓性を利用して枝付き樹幹２を取り出すことができるよ
うに、樹幹主体形成用キャビティ２３の先端側の軸心と
のなす角度が実質的に２０°以上の鋭角をとなるように
することが好ましく、この角度が２０°よりも小さい
と、無理な取り出しによって枝体を損傷する可能性があ
るのみならず、枝体に復元不能な屈曲などの障害が生じ
るおそれがある。The branch body forming cavities 27, 29 are provided at a predetermined draft angle obliquely upward to the tip side from the axial center of the trunk main body forming cavity 23. The undercuts, which hinder the release from the mold, are naturally formed by such drafts, but the branch body forming cavities 27, 29 are formed.
The branch body 4 formed by is not inserted with a core material and has sufficient flexibility. Therefore, in order that the tree trunk 2 with a branch can be taken out by utilizing this flexibility, the angle formed with the axial center of the tip side of the tree trunk main body forming cavity 23 becomes an acute angle of substantially 20 ° or more. If the angle is smaller than 20 °, not only the branch body may be damaged by forcible removal, but also the branch body may be damaged such as irreversible bending.
【００２９】前記のように、枝体４の先端には、樹葉部
材６の基端の係合部７に嵌入させて樹葉部材６を容易に
離脱しないように係合させる目的で円錐状の突部９を形
成しているので、枝体形成用キャビティ２７，２９の先
端もかゝる円錐状突部に合致したキャビティの形状とす
るものである。なお、キャビティ２９の先端に形成する
円錐状の突部に合致するキャビティの形状は、成形後の
枝体４の離脱が可能な限度において形成するものであ
る。また、樹幹主体３の基端部には、スタンド８に確実
に挿着保持するための鍔部１１とその下部に段部を付し
て周面に縦方向のローレット状の凹凸条を刻設している
ために、前記成形用金型２０の樹幹主体形成用キャビテ
ィ２３の基端部もかゝる鍔部と、嵌入部を形成すること
ができる形状としている。As described above, the tip of the branch body 4 is fitted into the engaging portion 7 at the base end of the tree member 6 so that the tree member 6 is engaged so as not to be easily disengaged. Since the portion 9 is formed, the tips of the branch body forming cavities 27 and 29 are also shaped to match the conical projections. The shape of the cavity that matches the conical projection formed at the tip of the cavity 29 is formed to the extent that the branch body 4 after molding can be separated. In addition, at the base end of the trunk main body 3, a flange 11 for securely inserting and holding the stand 8 and a stepped portion at the lower part thereof are provided, and a circumferential knurled concave-convex line is formed on the peripheral surface. Therefore, it has a shape capable of forming a fitting portion and a brim portion, which is also the base end portion of the trunk main body forming cavity 23 of the molding die 20.
【００３０】かゝる構造の成形用金型２０を使用した枝
付き樹幹２の製造について以下に述べる。まず、分割金
型２１，２１を型開きした状態で、その一方の金型２１
の樹幹主体形成用の凹部２４内に棒状芯材５を適宜の係
止手段で保持して分割金型２１，２１を矢視の方向に移
動させて閉じ合せたのち、この閉じ合せによって形成さ
れる基端部の射出通路２５と、上端部の射出通路２６と
から図示しない射出成形機によってポリ塩化ビニルを溶
融状態で射出する。この射出によって樹幹主体形成用キ
ャビティ２３内に溶融樹脂が充満し、続いて各枝体形成
用キャビティ２７，２９内にも溶融樹脂が射出される。
その際、閉じ合せた金型２０の各キャビティ２３，２
７，２９の内部の空気や成形時に発生したガスは、脱気
孔３０及び３１を通じて金型２０の外部に容易に排除さ
れて溶融樹脂を各キャビティ内にくまなく密に射出する
ことができる。また、樹幹主体形成用キャビティ２３に
内装した棒状芯体５は、周囲が溶融樹脂で包まれてイン
サート成形によって一体化され、かくして金型２０の内
部に前記の図１における枝付き樹幹２を形成することが
できる。The manufacture of the tree 2 with branches using the molding die 20 having such a structure will be described below. First, with the split molds 21 and 21 opened, one mold 21
The rod-shaped core material 5 is held in the recess 24 for forming the main trunk of the tree by an appropriate locking means, the split molds 21 and 21 are moved in the direction of the arrow and closed, and then formed by this closing. Polyvinyl chloride is injected in a molten state from an injection passage 25 at the base end portion and an injection passage 26 at the upper end portion by an injection molding machine (not shown). By this injection, the molten resin is filled in the trunk main body forming cavity 23, and subsequently, the molten resin is also injected into the branch body forming cavities 27, 29.
At that time, the cavities 23, 2 of the mold 20 which are closed together
The air inside 7 and 29 and the gas generated at the time of molding are easily removed to the outside of the mold 20 through the degassing holes 30 and 31, and the molten resin can be densely injected into each cavity. Further, the rod-shaped core body 5 installed in the trunk main body forming cavity 23 is wrapped around with a molten resin and integrated by insert molding, thus forming the branched trunk 2 in FIG. 1 inside the mold 20. can do.
【００３１】射出した樹脂が冷却固化した後に分割金型
２１，２１を前記と逆の方向に移動させて型開きし、内
部の枝付き樹幹２を分割金型２１，２１より取り出す。
この取り出しによって、分割金型２１，２１内の閉じ合
せ面２２，２２に形成された成形体の部分、すなわち樹
幹主体形成用キャビティ２３と枝体形成用キャビティ２
７とによる成形体は、型開きによって簡単に取り出すこ
とができ、枝体形成用キャビティ２９内で成形された枝
体もアンダーカットの状態で成形されているにもかゝわ
らず、この枝体が所定の抜き勾配を有し、かつ適度の可
撓性を有する軟質合成樹脂のみで成形されているので、
適当に撓屈しながら枝体形成用キャビティ１９から抜き
出すことができ、抜き出した後は復元性によって成形時
の状態に容易に復帰する。なお、図２に記載の枝体は、
途中で枝分かれのないものであるが、図１のように途中
で枝分かれした枝体の場合も、その成形と金型からの取
り出しは前記と同様にして容易に行うことができるもの
である。After the injected resin has cooled and solidified, the split molds 21 and 21 are moved in the opposite direction to the molds to open the mold, and the branch 2 with branches inside is taken out from the split molds 21 and 21.
By this removal, the parts of the molded body formed on the closing surfaces 22, 22 in the split molds 21, 21, that is, the trunk main body forming cavity 23 and the branch body forming cavity 2
The molded body according to 7 can be easily taken out by opening the mold, and the branched body molded in the branch body forming cavity 29 is also molded in an undercut state. Has a predetermined draft, and is molded only from soft synthetic resin with appropriate flexibility,
It can be appropriately flexed and extracted from the branch body forming cavity 19, and after extraction, it can easily return to the state at the time of molding due to the resilience. The branch body shown in FIG. 2 is
Although it does not branch in the middle, in the case of a branch body branched in the middle as shown in FIG. 1, its molding and removal from the mold can be easily performed in the same manner as described above.
【００３２】[0032]
【発明の効果】この発明の模造樹木の製造方法は、１対
の分割金型の閉じ合せ面に形成した樹幹主体形成用キャ
ビテイ内に溶融した軟質熱可塑性合成樹脂を射出し、樹
幹主体形成用キャビテイ内にあらかじめ内装保持した棒
状芯材によって自立性を付与した樹幹主体をインサート
成形すると共に、樹幹主体形成用キャビテイに連通した
多数の枝体形成用キャビティにも前記溶融樹脂を射出し
て軟質の熱可塑性合成樹脂の持つ可撓性をそのまゝ保持
した枝体を一体化させた枝付き樹幹を形成するものであ
る。EFFECTS OF THE INVENTION The method for producing an imitation tree of the present invention is one in which a soft thermoplastic synthetic resin melted is injected into a trunk main body forming cavity formed on the closed surfaces of a pair of split molds to form a main trunk tree. Insert-molding a trunk main body with self-supporting properties by a rod-shaped core material internally held in advance in the cavity, and injecting the molten resin into a large number of branch body forming cavities communicating with the trunk main body forming cavity to soften it. It forms a tree trunk with branches that integrates the branches that retain the flexibility of thermoplastic synthetic resin.
【００３３】この分割金型を使用して成形した枝付き樹
幹は、アンダーカットの状態で成形された枝体をその可
撓性を利用して枝体を損傷することなく樹幹主体と共に
型開きした分割金型から容易に分離することができ、か
くてワンショットの射出成形動作によって棒状心材をイ
ンサートした強靭な樹幹主体からなる枝付き樹幹を容易
に得ることができるものである。このようにして得た枝
付き樹幹は、別途形成した樹葉部材を枝体の先端に係着
することによって天然の樹木に酷似した模造樹木を安価
に得ることができる。The trunk with a branch formed by using this split mold is formed by opening the branch body formed in an undercut state together with the trunk main body without damaging the branch body by utilizing its flexibility. It can be easily separated from the split mold, and thus, a one-shot injection molding operation can easily obtain a branched trunk having a strong trunk main body with a rod-shaped core inserted. The tree trunk with branches thus obtained can inexpensively obtain an imitation tree that closely resembles a natural tree by attaching a separately formed tree member to the tip of the branch body.
【００３４】この発明の模造樹木の成形用金型は、１対
の分割金型の閉じ合わせ面に、樹幹主体の長さ方向の半
体を構成する凹部を形成し、閉じ合わせた金型の各凹部
によって内部に棒状芯材のインサート成形が可能な樹幹
主体形成用のキャビティを形成すると共に、樹幹主体形
成用キャビティに通ずる溶融樹脂の射出通路と、樹幹主
体形成用キャビティに連通して各分割金型の閉じ合わせ
面及び各金型内に所定の抜き勾配を保った多数の枝体形
成用キャビティを配設し、これら枝体形成用キャビティ
の先端に金型の外部に開口する脱気孔を設けたものであ
る。The mold for molding an imitation tree of the present invention is a mold in which a pair of split molds are formed with a concave portion which constitutes a half body in the longitudinal direction of the trunk main body on the closing surfaces of the molds. Each recess forms an inner cavity for forming a tree trunk main body that allows insert molding of a rod-shaped core material, and a molten resin injection passage leading to the tree trunk main body forming cavity and a cavity for forming the tree trunk main body are communicated with each other. A large number of branch body forming cavities that maintain a predetermined draft in the mold closing surface and each mold are provided, and degassing holes that open to the outside of the mold are provided at the tips of these branch body forming cavities. It is provided.
【００３５】この成形用金型によれば、射出通路を経て
射出された溶融樹脂が樹幹主体形成用キャビティで棒状
芯材をインサート成形した樹幹主体を形成し、各枝体形
成用キャビティで枝体を一体化して枝付き樹幹を一挙に
得ることができる。その際、枝体形成用キャビティの先
端に形成した脱気孔から、キャビティ内のガスを金型外
部に排気しつゝて各キャビティ内に樹脂を充満させるこ
とができるため、形成したキャビティの形状に合致した
正確な枝付き樹幹を得ることができるものである。According to this molding die, the molten resin injected through the injection passage forms the trunk main body in which the rod-shaped core material is insert-molded in the trunk main body forming cavity, and the branch body is formed in each branch body forming cavity. Can be integrated to obtain a tree trunk with a branch. At that time, the gas in the cavity can be exhausted to the outside of the mold through the deaeration hole formed at the tip of the branch body forming cavity so that the resin in each cavity can be filled with the shape of the formed cavity. It is possible to obtain an exact branched trunk.
Claims (6)
成される樹幹主体形成用キャビティ内の中央に、先端よ
り下端まで貫通する棒状芯材を内装保持したのち、該樹
幹主体形成用キャビティ内に軟質の熱可塑性合成樹脂成
形体を成形しうる溶融樹脂を射出して前記棒状芯材をイ
ンサートした樹幹主体を形成すると共に、該樹幹主体形
成用キャビティの周囲に、前記樹幹主体形成用キャビテ
ィに連通すると共に、樹幹主体の先端方向に向けて所定
の抜き勾配で放射状に配設した多数の枝体形成用キャビ
ティ内にも前記溶融樹脂を射出して樹幹主体の外周部に
放射状に延びる多数の可撓性の枝体を一体化した枝付き
樹幹を成形し、前記枝体の可撓性を利用して型開きした
分割金型から前記枝付き樹幹を取り出すことを特徴とす
る模造樹木の製造法。1. A bar-shaped core material penetrating from a tip to a lower end is internally held in the center of a trunk main body forming cavity formed by closing a pair of split molds, and then in the trunk main body forming cavity. In order to form a trunk main body in which the rod-shaped core material is inserted by injecting a molten resin capable of molding a soft thermoplastic synthetic resin molded body, around the trunk main body forming cavity, the trunk main body forming cavity is formed. While communicating with each other, a large number of radially extending to the outer periphery of the trunk main body by injecting the molten resin into a large number of branch body forming cavities radially arranged at a predetermined draft toward the tip direction of the trunk main body. Manufacture of a tree trunk having a branch with a flexible branch body integrated, and taking out the tree trunk with a branch from a split mold opened by utilizing the flexibility of the branch body. Law .
部の下部に段部を介して外周部に凹凸条を形成した筒状
の嵌入部とを一体的に形成することを特徴とする請求項
１記載の模造樹木の製造法。2. The trunk main body is integrally formed with a flange portion at a base end portion and a tubular fitting portion having a ridge and groove formed on an outer peripheral portion through a step portion at a lower portion of the flange portion. The method for producing an imitation tree according to claim 1, wherein
体的に形成することを特徴とする請求項１記載の模造樹
木の製造法。3. The method for producing an imitation tree according to claim 1, wherein the branch body is integrally formed with a conical protrusion at the tip.
に、成形せんとする樹幹主体の長さ方向の半体を構成す
る凹部をそれぞれ形成し、閉じ合わせた金型の前記各凹
部によって内部に棒状芯材を内装保持する余地を残し、
かつこの棒状芯材をインサート成形しうる樹幹主体形成
用キャビティを形成すると共に、該樹幹主体形成用キャ
ビティ内に通ずる溶融樹脂の射出通路と、前記樹幹主体
形成用キャビティに連通して各分割金型の閉じ合わせ面
及び各金型内に樹幹主体形成用キャビティの先端方向に
向けて所定の抜き勾配を保った多数の枝体形成用キャビ
ティを配設し、これら各枝体形成用キャビティの各先端
に金型の外部に開口する脱気孔を設けたことを特徴とす
る模造樹木の成形用金型。4. A mold comprising a pair of split molds, each of which is provided with a concave portion forming a half body in the longitudinal direction of a trunk main body to be formed, in the central portion of the closing faces, and each of the molds is closed. With the recess, there is room to hold the rod-shaped core inside,
In addition, a cavity for forming a trunk main body, which can insert-mold the rod-shaped core material, is formed, and an injection passage of the molten resin communicating with the cavity for forming the trunk main body and the split molds communicating with the cavity for forming the trunk main body A plurality of branch body forming cavities having a predetermined draft angle are arranged in the mold closing surface and in each mold toward the tip direction of the trunk main body forming cavity, and each tip of each branch body forming cavity is arranged. A mold for molding an imitation tree, characterized in that a deaeration hole that opens to the outside of the mold is provided on the.
成用キャビティの基端部と先端部との金型閉じ合わせ面
に形成したことを特徴とする請求項４記載の模造樹木の
成形用金型。5. The molding of an imitation tree according to claim 4, wherein the injection passage of the molten resin is formed on a mold closing surface between a base end portion and a tip end portion of the trunk main body forming cavity. Mold.
き勾配は、樹幹主体形成用キャビティの先端側軸心との
なす角度が２０°以上であることを特徴とする請求項４
記載の模造樹木の成形用金型。6. The draft formed in the branch body forming cavity has an angle of 20 ° or more with respect to the tip side axis of the trunk main body forming cavity.
Mold for molding the imitation tree described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21274491A JPH0531754A (en) | 1991-07-30 | 1991-07-30 | Manufacture of immitation tree and its molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21274491A JPH0531754A (en) | 1991-07-30 | 1991-07-30 | Manufacture of immitation tree and its molding die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0531754A true JPH0531754A (en) | 1993-02-09 |
Family
ID=16627709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21274491A Pending JPH0531754A (en) | 1991-07-30 | 1991-07-30 | Manufacture of immitation tree and its molding die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0531754A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010057426A1 (en) * | 2008-11-20 | 2010-05-27 | 江门市蓬江区尊豪工艺有限公司 | Decorative tree with inside power supply circuit and preparation method thereof |
| CN106393568A (en) * | 2016-11-17 | 2017-02-15 | 江西格林自动化设备有限公司 | Christmas tree branch finished product collecting device |
| CN112659468A (en) * | 2020-12-22 | 2021-04-16 | 陈结忠 | Integral forming injection molding process for Christmas tree branches |
| CN115246200A (en) * | 2021-04-28 | 2022-10-28 | 深圳市明杰浩科技有限公司 | Mould for manufacturing Christmas tree branches |
-
1991
- 1991-07-30 JP JP21274491A patent/JPH0531754A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010057426A1 (en) * | 2008-11-20 | 2010-05-27 | 江门市蓬江区尊豪工艺有限公司 | Decorative tree with inside power supply circuit and preparation method thereof |
| CN106393568A (en) * | 2016-11-17 | 2017-02-15 | 江西格林自动化设备有限公司 | Christmas tree branch finished product collecting device |
| CN112659468A (en) * | 2020-12-22 | 2021-04-16 | 陈结忠 | Integral forming injection molding process for Christmas tree branches |
| CN115246200A (en) * | 2021-04-28 | 2022-10-28 | 深圳市明杰浩科技有限公司 | Mould for manufacturing Christmas tree branches |
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