JP5090970B2 - Mold - Google Patents

Mold Download PDF

Info

Publication number
JP5090970B2
JP5090970B2 JP2008062282A JP2008062282A JP5090970B2 JP 5090970 B2 JP5090970 B2 JP 5090970B2 JP 2008062282 A JP2008062282 A JP 2008062282A JP 2008062282 A JP2008062282 A JP 2008062282A JP 5090970 B2 JP5090970 B2 JP 5090970B2
Authority
JP
Japan
Prior art keywords
molding
heat
shaping
molded body
cylindrical
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.)
Expired - Fee Related
Application number
JP2008062282A
Other languages
Japanese (ja)
Other versions
JP2009214481A (en
Inventor
薫 竹尾
広樹 金光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Seal International Inc
Original Assignee
Fuji Seal International Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Seal International Inc filed Critical Fuji Seal International Inc
Priority to JP2008062282A priority Critical patent/JP5090970B2/en
Publication of JP2009214481A publication Critical patent/JP2009214481A/en
Application granted granted Critical
Publication of JP5090970B2 publication Critical patent/JP5090970B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Description

この発明は、筒状の合成樹脂シートから、例えば、育苗ポット、植木鉢、植木鉢カバー等のように、底部に穴が形成されたカップ状の成形体を成形するための成形型に関する。   The present invention relates to a molding die for molding a cup-shaped molded body having a hole in the bottom, such as a seedling pot, a flower pot, a flower pot cover, etc., from a cylindrical synthetic resin sheet.

例えば、植物の苗の育成及び販売には、ポリプロピレン等からなる合成樹脂シート等によって形成された育苗ポットが一般的に使用されているが、こういった育苗ポットは装飾性に劣り、また、断熱性が低いため、寒冷地や寒暖差の激しい地域で使用すると、植物や苗の育成に重大な悪影響を及ぼす。そこで、本願出願人は、熱収縮性を有する合成樹脂シート(以下、熱収縮性シートという場合もある。)から形成される、特許文献1に記載の外装体を植木鉢としても使用することができる装飾性に優れた育苗ポットとして利用できることを見いだした。   For example, a seedling pot formed of a synthetic resin sheet made of polypropylene or the like is generally used for growing and selling plant seedlings, but these seedling pots are inferior in decorativeness, and are insulated. Because of its low nature, when used in cold regions or regions with a significant temperature difference, it has a serious adverse effect on the growth of plants and seedlings. Therefore, the applicant of the present application can use the exterior body described in Patent Document 1 formed from a synthetic resin sheet having heat-shrinkability (hereinafter also referred to as a heat-shrinkable sheet) as a flower pot. It was found that it can be used as a seedling pot with excellent decorativeness.

この育苗ポットは、グラビア印刷等によって装飾を施した加飾フィルムがラミネートされた熱収縮性シートを筒状に形成し、この筒状体を成形型に被嵌した状態で周方向に熱収縮させることにより成形型の周面に密着させて胴部を成形した後、成形型の上方に廻り込んだ筒状体の上端部分を押圧部材によって成形型の上面に押し付けることで、底部を成形したものであり、筒状体の上端縁が熱収縮することによって、その上端開口が小さくなり、最終的に底部に形成された水抜穴になるようになっている。   This seedling pot is formed in a cylindrical shape with a heat-shrinkable sheet laminated with a decorative film decorated by gravure printing or the like, and heat-shrinks in the circumferential direction in a state where the cylindrical body is fitted in a mold. After forming the body part in close contact with the peripheral surface of the molding die, the bottom part is molded by pressing the upper end portion of the cylindrical body that wraps around the upper part of the molding die against the upper surface of the molding die. When the upper end edge of the cylindrical body is thermally contracted, the upper end opening becomes smaller and finally becomes a drain hole formed in the bottom.

特開2006−248539号公報JP 2006-248539 A

ところで、上述したように、熱収縮性を有する筒状体を成形型に被嵌して加熱収縮させる場合、底部となる筒状体の上端部分は成形型の上側に張り出しており、熱収縮の過程で全く支持されることがないので、均一に熱収縮するわけではなく、筒状体の上端縁が内側にカールする場合もある。   By the way, as described above, when a heat-shrinkable cylindrical body is fitted on a mold and is heat-shrinked, the upper end portion of the cylindrical body serving as the bottom portion protrudes above the mold, Since it is not supported at all in the process, the heat shrink does not occur uniformly, and the upper edge of the cylindrical body may curl inward.

従って、筒状体を熱収縮させた後、成形型の上方に廻り込んだ筒状体の上端部を押圧部材によって成形型の上面に押し付けて底部を成形しても、底部に形成される水抜き穴の口径や形状がまちまちになり、所定の形状及び口径の水抜き穴を安定した状態で確実に形成することができないといった問題がある。   Therefore, after the cylindrical body is heat-shrinked, even if the bottom part is molded by pressing the upper end of the cylindrical body that has wrapped around the molding die against the upper surface of the molding die by the pressing member, the water formed on the bottom part There is a problem that the diameter and shape of the hole are different, and the water hole having a predetermined shape and diameter cannot be reliably formed in a stable state.

そこで、この発明の課題は、筒状体から成形するカップ状の成形体の底部に、所定の形状及び口径の穴を安定した状態で確実に形成することができる成形型を提供することにある。   Then, the subject of this invention is providing the shaping | molding die which can form reliably the hole of a predetermined | prescribed shape and a diameter in the bottom in the bottom of the cup-shaped molded object shape | molded from a cylindrical body. .

上記の課題を解決するため、請求項1に係る発明は、熱収縮性を有する合成樹脂シートによって形成された筒状の被成形材から、底部に穴が形成されたカップ状の成形体を成形するための成形型であって、上部側が前記成形体の底部側に、下部側が前記成形体の上端開口部側に対応するように、所定形状に形成された本体部と、前記本体部に被嵌した筒状の前記被成形材を加熱収縮させる際、その被成形材の上端部を予備的に整形する予備整形部と、成形完了後の前記成形体を押し上げて前記本体部から離型する離型部とを備え、前記予備整形部は、前記成形体の底部を成形するための底部成形面に対して出没可能に支持された可動整形部材と、この可動整形部材を、前記底部成形面から突出させた状態に付勢する付勢手段とを有し、前記本体部に被嵌した筒状の前記被成形材を加熱収縮させることによって、前記被成形材の上端部を、前記底部成形面から突出した前記可動整形部材に沿わせた状態で、押圧部材によって前記可動整形部材を押し下げて前記被成形材の上端部を前記底部成形面に押し付けることで、前記成形体の底部を成形するようにしたことを特徴とする成形型を提供するものである。   In order to solve the above-mentioned problems, the invention according to claim 1 is to form a cup-shaped molded body having a hole formed in the bottom from a cylindrical molded material formed of a heat-shrinkable synthetic resin sheet. A main body formed in a predetermined shape so that the upper side corresponds to the bottom side of the molded body and the lower side corresponds to the upper end opening side of the molded body, and the main body is covered with the mold. When the fitted cylindrical material to be heated is shrunk, a pre-shaped part that preliminarily shapes the upper end of the material to be molded, and the molded body after molding is pushed up and released from the main body part. A mold part, and the preliminary shaping part is a movable shaping member supported so as to be movable in and out with respect to a bottom molding surface for molding the bottom part of the molded body, and the movable shaping member is connected to the bottom molding surface. Biasing means for biasing to a state of protruding from the By heating and shrinking the cylindrical molding material fitted to the part, the upper end portion of the molding material is aligned with the movable shaping member protruding from the bottom molding surface, and the pressing member causes the A molding die characterized in that the bottom of the molded body is molded by pressing down the movable shaping member and pressing the upper end of the material to be molded against the bottom molding surface.

以上のように、請求項1に係る発明の成形型は、被嵌した筒状の被成形材を加熱収縮させる際、成形体の底部となる被成形材の上端部を底部成形面から突出した可動整形部材に沿わせることによって予備的に整形したので、押圧部材によって、可動整形部材を押し下げて被成形材の上端部を底部成形面に押し付けることで、成形体の底部を成形すると、成形体の底部に所定の形状及び口径の穴を安定した状態で確実に形成することができる。   As described above, the mold according to the first aspect of the present invention projects the upper end portion of the molding material which becomes the bottom of the molded body from the bottom molding surface when the fitted cylindrical molding material is heated and shrunk. Since it was preliminarily shaped by moving along the movable shaping member, when the bottom of the molded body is molded by pressing down the movable shaping member with the pressing member and pressing the upper end of the molding material against the bottom molding surface, the molded body A hole having a predetermined shape and a diameter can be reliably formed in a stable state at the bottom.

以下、実施の形態について図面を参照して説明する。図1(a)、(b)及び図2は、図8に示すように、熱収縮性シートによって形成された筒状体Mから、図9に示すように、底部に水抜き穴hが形成されたカップ状の育苗ポットPを成形するための成形型1を示している。なお、図9においては、育苗ポットPを、上下逆にした状態、即ち、底部が上にくるような状態で示している。   Hereinafter, embodiments will be described with reference to the drawings. 1 (a), 1 (b), and 2 are formed from a tubular body M formed of a heat-shrinkable sheet as shown in FIG. 8, and a drain hole h is formed at the bottom as shown in FIG. The shaping | molding die 1 for shape | molding the made cup-shaped seedling pot P is shown. In FIG. 9, the seedling pot P is shown upside down, that is, in a state where the bottom part is on the top.

前記筒状体Mを形成している熱収縮性シートは、少なくとも、一方向(筒状体Mの周方向)に主として熱収縮しうる熱収縮性を有しているものが使用される。例えば、熱収縮性シートが単層シートから構成される場合は、断熱性を有し、一方向に主として熱収縮するシートが使用される。また、熱収縮性シートが断熱層を含む複層構造の積層シートから構成される場合は、少なくとも、いずれか一層が熱収縮性を有し、その熱収縮性を有する層が非熱収縮性の他層を引っ張って収縮することにより、積層シート全体が少なくとも一方向に収縮可能であればよく、特に、断熱層と合成樹脂シートを含む積層シートを使用することが望ましい。   As the heat-shrinkable sheet forming the cylindrical body M, a sheet having a heat-shrinkable property capable of mainly thermally shrinking in at least one direction (the circumferential direction of the cylindrical body M) is used. For example, when the heat-shrinkable sheet is composed of a single-layer sheet, a sheet having heat insulation and mainly heat-shrinking in one direction is used. When the heat-shrinkable sheet is composed of a laminated sheet having a multilayer structure including a heat insulating layer, at least one of the layers has heat-shrinkability, and the layer having the heat-shrinkability is non-heat-shrinkable. By pulling and contracting the other layer, it is sufficient that the entire laminated sheet can shrink in at least one direction, and it is particularly desirable to use a laminated sheet including a heat insulating layer and a synthetic resin sheet.

前記断熱層は、例えば、厚さが0.1〜1mm程度の不透明の発泡樹脂シート、不織布等によって形成することができ、熱収縮性を有するものであってもよい。また、後述するように、積層された合成樹脂シートが熱収縮性を有する場合には、断熱層自体が、熱収縮性を有している必要はない。前記発泡樹脂シートは、ポリスチレン、ポリエチレン、ポリプロピレン、ポリウレタン等によって形成することができ、特に、高発泡性を有するスチレン系樹脂によって形成することが望ましい。また、発泡方法としては、物理的発泡、化学的発泡等の公知の発泡方法を採用することができ、断熱性の観点からは、発泡倍率が2〜10程度のものが望ましい。これらの樹脂には、必要に応じて、各種フィラー、着色剤、可塑剤、安定剤等の添加剤を適宜添加してもよい。また、前記不織布としては、ポリエステル、ポリエチレン等のポリオレフィン、ポリオレフィン系エラストマー、レーヨン、ナイロン、キュプラ等の繊維をシート状に形成したものを使用することができる。不織布を形成する繊維としては、中実繊維、中空繊維またはこれらの混合繊維を使用することができ、特に、断熱性に優れた中空繊維またはその混合繊維を使用することが望ましい。   The heat insulation layer can be formed of, for example, an opaque foamed resin sheet having a thickness of about 0.1 to 1 mm, a nonwoven fabric, or the like, and may have heat shrinkability. Moreover, as will be described later, when the laminated synthetic resin sheet has heat shrinkability, the heat insulating layer itself does not need to have heat shrinkability. The foamed resin sheet can be formed of polystyrene, polyethylene, polypropylene, polyurethane, or the like, and particularly preferably formed of a styrene resin having high foamability. Moreover, as a foaming method, well-known foaming methods, such as physical foaming and chemical foaming, can be employ | adopted, and a foaming ratio of about 2-10 is desirable from a heat insulating viewpoint. To these resins, additives such as various fillers, colorants, plasticizers, stabilizers and the like may be appropriately added as necessary. In addition, as the non-woven fabric, it is possible to use a sheet made of fibers such as polyolefins such as polyester and polyethylene, polyolefin elastomers, rayon, nylon and cupra. Solid fibers, hollow fibers, or mixed fibers thereof can be used as the fibers forming the nonwoven fabric, and it is particularly desirable to use hollow fibers or mixed fibers excellent in heat insulation.

前記合成樹脂シートは、特に限定されず、例えば、ポリスチレン等のスチレン系樹脂、ポリエチレンテレフタレート等のポリエステル系樹脂、ポリプロピレン、環状オレフィン等のオレフィン系樹脂といった熱可塑性樹脂から選ばれる1種単独または2種以上の混合物を含む樹脂組成物を製膜したシート(一般にフィルムと呼ばれるものも含まれる。)及びこれらのシートを2層以上積層した積層シートを使用することができ、20〜70μm程度の厚みのものが望ましい。なお、合成樹脂シートは、熱収縮性を有していても、有していなくてもよいが、透明性に優れたものを使用することが望ましい。   The synthetic resin sheet is not particularly limited, and for example, one kind or two kinds selected from thermoplastic resins such as styrene resins such as polystyrene, polyester resins such as polyethylene terephthalate, and olefin resins such as polypropylene and cyclic olefins. A sheet formed of a resin composition containing the above mixture (also generally referred to as a film) and a laminated sheet obtained by laminating two or more of these sheets can be used, and has a thickness of about 20 to 70 μm. Things are desirable. The synthetic resin sheet may or may not have heat shrinkability, but it is desirable to use a sheet having excellent transparency.

前記熱収縮性シートには、必要に応じて、例えば、グラビア印刷によって単色または多色刷りされた絵柄や各種化粧模様等のデザイン表示が施されており、熱収縮性シートが断熱層と合成樹脂シートを含む積層シートによって形成される場合は、合成樹脂シートの内面にデザイン表示を施すことが望ましいが、合成樹シートの外面や断熱層にデザイン表示を施してもよい。   If necessary, the heat-shrinkable sheet is provided with a design indication such as a single-color or multi-colored pattern or various decorative patterns by gravure printing, and the heat-shrinkable sheet is a heat insulating layer and a synthetic resin sheet. In the case of being formed by a laminated sheet containing, it is desirable to give a design indication to the inner surface of the synthetic resin sheet, but the design indication may be given to the outer surface of the synthetic tree sheet or the heat insulating layer.

前記熱収縮性シートとしては、熱収縮性を有しない合成樹脂シート(例えば、未延伸のポリスチレンフィルム)と、熱収縮性を有する発泡樹脂シート(例えば、延伸したポリスチレン発泡樹脂シート)とが積層された積層シートを使用することが望ましく、積層シートを使用する場合においては、上層と下層とが同一素材または同種素材(例えば、上述したスチレン系等)であるものが望ましい。なぜなら、熱収縮性シートを筒状に形成する際、その側端部を粘着剤にて確実に接着することができるからである。また、熱収縮性シートとして、合成樹脂シートと発泡樹脂シートとの積層シートを使用する場合は、その合成樹脂シートが育苗ポットPの外面を形成するように、熱収縮性シートを筒状に形成することが望ましい。   As the heat-shrinkable sheet, a synthetic resin sheet not having heat-shrinkability (for example, an unstretched polystyrene film) and a foamed resin sheet having heat-shrinkability (for example, a stretched polystyrene foamed resin sheet) are laminated. It is desirable to use a laminated sheet. In the case of using a laminated sheet, it is desirable that the upper layer and the lower layer are the same material or the same kind of material (for example, the above-described styrene-based material). This is because, when the heat-shrinkable sheet is formed into a cylindrical shape, the side end portions can be reliably bonded with an adhesive. In addition, when a laminated sheet of a synthetic resin sheet and a foamed resin sheet is used as the heat-shrinkable sheet, the heat-shrinkable sheet is formed in a cylindrical shape so that the synthetic resin sheet forms the outer surface of the seedling pot P It is desirable to do.

合成樹脂シートと断熱層との接着は、通常、ドライラミネート法やウエットラミネート法等で採用されている接着剤、例えば、アクリル系、ポリウレタン系、酢酸ビニル系、塩化ビニル系、ゴム系等の溶剤型接着剤または水溶性接着剤等を使用することができる。なお、断熱層を有する熱接着性シートは、合成樹脂シートと断熱層とを有する積層シートに限られず、例えば、熱収縮性を有する断熱層のみから形成されていてもよい。また、熱接着性シートは、合成樹脂シートまたは断熱層のいずれか一方または双方が複層の積層体からなり、全体として3層以上の積層シートを使用することもできる。   Adhesion between the synthetic resin sheet and the heat insulating layer is usually an adhesive employed in a dry laminating method or a wet laminating method, for example, an acrylic, polyurethane, vinyl acetate, vinyl chloride, rubber or other solvent. A mold adhesive or a water-soluble adhesive can be used. In addition, the heat-adhesive sheet | seat which has a heat insulation layer is not restricted to the laminated sheet which has a synthetic resin sheet and a heat insulation layer, For example, you may be formed only from the heat insulation layer which has heat shrinkability. In addition, the heat-adhesive sheet may be a synthetic resin sheet or a heat-insulating layer, or a laminated body having a multilayer structure, and a laminated sheet having three or more layers as a whole can be used.

前記熱収縮性シートの熱収縮率は、例えば、一方向(主たる熱収縮方向)における熱収縮率(160℃に相当するグリセリンバスに5秒間浸漬)が、50%以上、好ましくは、60%以上、より好ましくは70%以上である。また、熱収縮性シートは、他方向(前記一方向に直交する方向)に若干熱収縮してもよく、かかる他方向における熱収縮率(160℃に相当するグリセリンバスに5秒間浸漬)が、約0.5〜10%程度のものが例示される。ただし、熱収縮率(%)=[{(一方向(または他方向)の元の長さ)−(一方向(または他方向)の浸漬後の長さ)}/(一方向(または他方向)の元の長さ)]×100。   The heat shrinkage rate of the heat-shrinkable sheet is, for example, a heat shrinkage rate in one direction (main heat shrinkage direction) (immersion in a glycerin bath corresponding to 160 ° C. for 5 seconds) is 50% or more, preferably 60% or more More preferably, it is 70% or more. Moreover, the heat-shrinkable sheet may be slightly heat-shrinked in the other direction (direction orthogonal to the one direction), and the heat-shrinkage rate in the other direction (immersed in a glycerin bath corresponding to 160 ° C. for 5 seconds) The thing of about 0.5 to 10% is illustrated. However, heat shrinkage rate (%) = [{(original length in one direction (or other direction)) − (length after immersion in one direction (or other direction))} / (one direction (or other direction) ) Original length)] × 100.

前記成形型1は、図1(a)、(b)及び図2に示すように、上部側が育苗ポットPの底部側に、下部側が育苗ポットPの上端開口部側に対応するように、所定形状に形成された本体部10と、この本体部10に被嵌した筒状体Mの下端部を本体部10との間に挟み込んで保持する保持部20と、成形完了後の育苗ポットPを押し上げて本体部10から離型する離型部30と、本体部10に被嵌した筒状体Mを加熱収縮させる際、その筒状体Mの上端部を予備的に整形する予備整形部40とを備えており、予備整形部40は離型部30に取り付けられている。   As shown in FIGS. 1 (a), 1 (b) and 2, the molding die 1 is predetermined so that the upper side corresponds to the bottom side of the seedling pot P and the lower side corresponds to the upper end opening side of the seedling pot P. A main body portion 10 formed in a shape, a holding portion 20 that holds the lower end portion of the tubular body M fitted to the main body portion 10 between the main body portion 10 and a seedling pot P after completion of molding. A release part 30 that is pushed up and released from the main body part 10 and a pre-shaping part 40 that preliminarily shapes the upper end of the cylindrical body M when the cylindrical body M fitted to the main body part 10 is heated and shrunk. The preliminary shaping portion 40 is attached to the release portion 30.

前記本体部10は、図2及び図3(a)、(b)に示すように、外周面が育苗ポットPの胴部成形面となる外形が略円錐台状の筒状型11を備えており、その筒状型11の内周部分は、上半部の内径が下半部の内径より小径に形成されていると共に、上半部の下部には、径方向内側に張り出す内フランジ部12が形成されている。   As shown in FIG. 2 and FIGS. 3A and 3B, the main body 10 includes a cylindrical die 11 whose outer shape is a substantially frustoconical outer shape that forms the body forming surface of the seedling pot P. The inner peripheral portion of the cylindrical mold 11 is formed such that the inner diameter of the upper half portion is smaller than the inner diameter of the lower half portion, and the inner flange portion projecting radially inward is formed at the lower portion of the upper half portion. 12 is formed.

前記内フランジ部12には、前記離型部40を位置決めするための位置決めピン13が立設されていると共に、後述する予備整形部40のストッパ43が嵌り込む凹部14が形成されており、内径が小径に形成された筒状型11の上半部には、内フランジ部12の下面と面一の下端面から上端面に至る複数の貫通穴15が形成されている。   The inner flange portion 12 is provided with a positioning pin 13 for positioning the release portion 40 and a recess 14 into which a stopper 43 of a pre-shaping portion 40 described later is fitted. A plurality of through holes 15 extending from the lower end surface flush with the lower surface of the inner flange portion 12 to the upper end surface are formed in the upper half of the cylindrical mold 11 having a small diameter.

前記保持部20は、本体部10を固定設置する平面円形状の基台21と、この基台21に、径方向にスライド自在に支持された4つの保持爪22と、これらの保持爪22の外端面に形成された凹部に嵌め込まれた環状のコイルばね23とから構成されており、コイルばね23によって、保持爪22が径方向内側に付勢され、保持爪22が本体部10の下部外周面との間に筒状体Mの下端部を挟み込むようになっている。   The holding portion 20 includes a planar circular base 21 on which the main body portion 10 is fixedly installed, four holding claws 22 supported on the base 21 so as to be slidable in the radial direction, and the holding claws 22. It comprises an annular coil spring 23 fitted in a recess formed on the outer end surface, and the holding claw 22 is urged radially inward by the coil spring 23, and the holding claw 22 is the lower outer periphery of the main body 10. The lower end portion of the cylindrical body M is sandwiched between the surface and the surface.

前記離型部30は、図2及び図4(a)〜(c)に示すように、筒状型11における内フランジ部11よりも上側の内部空間に収容される円形のカップ状部材31と、このカップ状部材31の上端部から外側に張り出して筒状型11の上端面に載置されるフランジ部34とを備えており、カップ状部材31の底部には、本体部10の位置決めピン13が嵌り込む位置決め穴32と、後述する予備整形部40のスライドピン42が挿通される3個のピン挿通穴33とが形成されていると共に、離型部30を昇降させるロッドRが固定されている。   As shown in FIGS. 2 and 4A to 4C, the release part 30 includes a circular cup-shaped member 31 accommodated in an internal space above the inner flange part 11 in the cylindrical mold 11. And a flange portion 34 that protrudes outward from the upper end portion of the cup-shaped member 31 and is placed on the upper end surface of the cylindrical mold 11. A positioning pin of the main body portion 10 is provided at the bottom of the cup-shaped member 31. A positioning hole 32 into which 13 is fitted, and three pin insertion holes 33 into which slide pins 42 of a pre-shaping part 40 described later are inserted, and a rod R for raising and lowering the release part 30 is fixed. ing.

前記予備整形部40は、図2及び図5(a)〜(c)に示すように、離型部30のカップ状部材31内に嵌入可能な円環状の可動整形部材41と、この可動整形部材41の下面に連設された、離型部30のカップ状部材31のピン挿通穴33に挿通される3本のスライドピン42と、可動整形部材41を上方側に付勢するコイルばね44とを備えており、スライドピン42の下端部には、スライドピン42の抜け止め機能を有するストッパ43が固定されている。   As shown in FIGS. 2 and 5A to 5C, the preliminary shaping portion 40 includes an annular movable shaping member 41 that can be fitted into the cup-shaped member 31 of the release portion 30, and the movable shaping member. Three slide pins 42 inserted into the pin insertion hole 33 of the cup-shaped member 31 of the release part 30, which are continuously provided on the lower surface of the member 41, and a coil spring 44 that urges the movable shaping member 41 upward. A stopper 43 having a function of preventing the slide pin 42 from being detached is fixed to the lower end portion of the slide pin 42.

以上のように構成された成形型1を用いた育苗ポットPの成形作業について、図6及び図7を参照しながら、以下に説明する。まず、図6(a)に示すように、成形型1に筒状体Mを被嵌して押し下げると、保持部20の保持爪22が径方向外側に押し広げられ、筒状体Mの下端部が本体部10の下部外周面と保持爪22との間に挟み込まれることによって保持される。   The molding operation of the seedling pot P using the molding die 1 configured as described above will be described below with reference to FIGS. 6 and 7. First, as shown in FIG. 6A, when the cylindrical body M is fitted onto the mold 1 and pushed down, the holding claws 22 of the holding portion 20 are spread outward in the radial direction, and the lower end of the cylindrical body M is expanded. The portion is held by being sandwiched between the lower outer peripheral surface of the main body portion 10 and the holding claw 22.

この状態で、成形型1に被嵌した筒状体Mを加熱収縮させると、同図(b)に示すように、筒状体Mが本体部10の筒状型11の外周面及び離型部30のフランジ部34の外周面に密着することによって胴部が成形されると共に、筒状体Mの上部が離型部30のフランジ部34の上端面に沿うように熱収縮しながら、筒状体Mの上端縁が予備整形部40の可動整形部材41の上面に沿うように熱収縮することで、底部が予備成形される。このとき、筒状体Mの上端開口部は、その上端縁が内面側にカールすることなく熱収縮し、予備成形された底部には、常に安定した状態で育苗ポットPの水抜き穴hと略同径の穴が形成されることになる。   In this state, when the cylindrical body M fitted to the mold 1 is heated and shrunk, the cylindrical body M becomes the outer peripheral surface of the cylindrical mold 11 of the main body 10 and the mold release as shown in FIG. The body part is molded by being in close contact with the outer peripheral surface of the flange part 34 of the part 30, while the upper part of the cylindrical body M is thermally contracted so as to be along the upper end surface of the flange part 34 of the release part 30, The bottom part is preformed by heat shrinking so that the upper edge of the body M is along the upper surface of the movable shaping member 41 of the preliminary shaping part 40. At this time, the upper end opening of the cylindrical body M is thermally contracted without curling the upper end edge to the inner surface side, and the drain hole h of the seedling pot P is always in a stable state on the preformed bottom. Holes having substantially the same diameter are formed.

続いて、図7(a)に示すように、上方から押圧部材PMによって可動整形部材41を押し下げて予備整形された底部を底部成形面となる離型部30のフランジ部34の上面及び予備整形部40の可動整形部材41の上面に押し付けることで、所定口径の水抜き穴hを有する底部が成形され、育苗ポットPが出来上がる。   Subsequently, as shown in FIG. 7 (a), the top surface of the flange portion 34 of the mold release portion 30 and the preliminary shaping are formed so that the bottom portion preliminarily shaped by pressing down the movable shaping member 41 by the pressing member PM from above. By pressing on the upper surface of the movable shaping member 41 of the part 40, the bottom part which has the drain hole h of a predetermined diameter is shape | molded, and the seedling pot P is completed.

最後に、同図(b)に示すように、離型部30を持ち上げると、成形完了後の育苗ポットPが本体部10の筒状型11から外れ、移送することができる状態となる。このとき、予備整形部40の可動整形部材41は、コイルばね44の付勢力によって、離型部30のフランジ部34の上面から上方側に突出し、成形された育苗ポットPを可動整形部材41が離型部30から持ち上げた状態となっている。   Finally, as shown in FIG. 4B, when the release part 30 is lifted, the seedling pot P after completion of the molding is detached from the cylindrical mold 11 of the main body part 10 and can be transferred. At this time, the movable shaping member 41 of the preliminary shaping portion 40 protrudes upward from the upper surface of the flange portion 34 of the mold release portion 30 by the urging force of the coil spring 44, and the movable shaping member 41 transfers the molded seedling pot P to the movable shaping member 41. It is in a state of being lifted from the release part 30.

以上のように、この成形型1は、被嵌した筒状体Mを加熱収縮させる際、育苗ポットPの底部となる筒状体Mの上端部を底部成形面である離型部30のフランジ部34の上面から突出した可動整形部材41に沿わせることによって予備的に整形した後、可動整形部材41を押し下げて予備整形された底部を底部成形面となる離型部30のフランジ部34の上面及び予備整形部40の可動整形部材41の上面に押し付けることで、育苗ポットPの底部を成形するようにしたので、熱収縮の過程で底部となる筒状体の上端部分が全く支持されない従来の成形型に比べて、筒状体Mの上部が均一に熱収縮すると共に、筒状体Mの上端縁が内側にカールすることがなく、育苗ポットPの底部に所定の形状及び口径の水抜き穴hを安定した状態で確実に形成することができる。   As described above, the mold 1 is configured such that when the fitted tubular body M is heated and contracted, the upper end portion of the tubular body M, which is the bottom of the seedling pot P, is the flange of the release part 30 which is the bottom molding surface. After preliminarily shaping by moving along the movable shaping member 41 protruding from the upper surface of the portion 34, the bottom of the mold release portion 30 which becomes the bottom molding surface is formed by pressing the movable shaping member 41 down and preliminarily shaping the bottom portion. Since the bottom part of the seedling pot P is molded by pressing against the upper surface and the upper surface of the movable shaping member 41 of the preliminary shaping part 40, the upper end part of the cylindrical body that becomes the bottom part in the process of heat shrinkage is not supported at all. Compared with this mold, the upper part of the tubular body M is uniformly heat-shrinked, and the upper edge of the tubular body M is not curled inward, and water having a predetermined shape and caliber is formed at the bottom of the seedling pot P. Securely with the hole h in a stable state It can be formed.

なお、上述した実施形態では、予備整形部40の可動整形部材41として、ある程度の厚みを有する、上面が略フラットな円環状部材を採用したが、これに限定されるものではなく、本体部10に被嵌した筒状体Mを加熱収縮させる際、筒状体Mの上端縁が均一に沿うような形状であれば、例えば、円錐状、円錐台状、円柱状、円筒状、円盤状等、種々の形状を採用することができる。   In the above-described embodiment, an annular member having a certain thickness and a substantially flat top surface is employed as the movable shaping member 41 of the preliminary shaping unit 40, but is not limited thereto. As long as the cylindrical body M fitted on the base is heated and contracted, the cylindrical body M has a shape in which the upper edge of the cylindrical body M is uniformly aligned, for example, a conical shape, a truncated cone shape, a columnar shape, a cylindrical shape, a disc shape, etc. Various shapes can be employed.

また、上述した実施形態では、予備整形部40の可動整形部材41を上方側に付勢する付勢手段として、コイルばね44を採用しているが、これに限定されるものではなく、例えば、熱耐性を有するゴムやスポンジ等の圧縮可能な弾性部材、空気等の流体を利用した各種伸縮機構等を採用することも可能である。   Moreover, in embodiment mentioned above, although the coil spring 44 is employ | adopted as a biasing means which biases the movable shaping member 41 of the preliminary shaping part 40 upward, it is not limited to this, For example, It is also possible to employ a compressible elastic member such as rubber or sponge having heat resistance, and various expansion / contraction mechanisms using fluid such as air.

また、上述した実施形態では、底部に水抜き穴hを有する育苗ポットPを成形するための成形型について説明したが、これに限定されるものではなく、本発明の成形型は、底部に所定の形状及び口径の穴が形成された植木鉢や植木鉢カバー等を成形する場合に適用することができることはいうまでもない。   In the above-described embodiment, the mold for molding the seedling pot P having the drain hole h at the bottom has been described. However, the present invention is not limited to this, and the mold of the present invention has a predetermined shape at the bottom. Needless to say, the present invention can be applied to molding a flower pot, a flower pot cover or the like in which a hole having a shape and a diameter is formed.

底部に穴が形成されたカップ状の成形体を成形する場合に適用することができる。   It can be applied when molding a cup-shaped molded body having a hole in the bottom.

(a)はこの発明に係る成形型の一実施形態を示す平面図、(b)は同上の成形型を示す側面図である。(A) is a top view which shows one Embodiment of the shaping | molding die concerning this invention, (b) is a side view which shows the shaping | molding die same as the above. 図1(a)のX−X線に沿った断面図である。It is sectional drawing along the XX line of Fig.1 (a). (a)は同上の成形型の本体部を示す平面図、(b)は同上の本体部を示す側面図である。(A) is a top view which shows the main-body part of a shaping | molding die same as the above, (b) is a side view which shows a main-body part same as the above. (a)は同上の成形型の離型部を示す平面図、(b)は同上の離型部を示す側面図、(c)は同上の離型部を示す底面図である。(A) is a top view which shows the mold release part of a shaping | molding die same as the above, (b) is a side view which shows a mold release part same as the above, (c) is a bottom view which shows a mold release part same as the above. (a)は同上の成形型の予備整形部を示す平面図、(b)は同上の予備整形部を示す側面図、(c)は同上の予備整形部を示す底面図である。(A) is a top view which shows the preliminary shaping part of a shaping | molding die same as the above, (b) is a side view which shows the preliminary shaping part same as the above, (c) is a bottom view which shows the preliminary shaping part same as the above. (a)、(b)は同上の成形型を用いた育苗ポットの成形作業を示す工程図である。(A), (b) is process drawing which shows the shaping | molding operation | work of the seedling pot using the shaping | molding die same as the above. (a)、(b)は同上の成形型を用いた育苗ポットの成形作業を示す工程図である。(A), (b) is process drawing which shows the shaping | molding operation | work of the seedling pot using the shaping | molding die same as the above. 同上の育苗ポット成形用の筒状体を示す斜視図である。It is a perspective view which shows the cylindrical body for raising seedling pots same as the above. 同上の育苗ポットを示す斜視図である。It is a perspective view which shows the seedling raising pot same as the above.

符号の説明Explanation of symbols

1 成形型
10 本体部
11 筒状型
12 内フランジ部
13 位置決めピン
14 凹部
15 貫通穴
20 保持部
21 基台
22 保持爪
23 コイルばね
30 離型部
31 カップ状部材
32 位置決め穴
33 ピン挿通穴
34 フランジ部
40 予備整形部
41 可動整形部材
42 スライドピン
43 ストッパ
44 コイルばね
M 筒状体
P 育苗ポット
PM 押圧部材
DESCRIPTION OF SYMBOLS 1 Mold 10 Main body part 11 Cylindrical type | mold 12 Inner flange part 13 Positioning pin 14 Recessed part 15 Through hole 20 Holding part 21 Base 22 Holding claw 23 Coil spring 30 Mold release part 31 Cup-shaped member 32 Positioning hole 33 Pin insertion hole 34 Flange part 40 Preliminary shaping part 41 Movable shaping member 42 Slide pin 43 Stopper 44 Coil spring M Cylindrical body P Nursery pot PM Pressing member

Claims (1)

熱収縮性を有する合成樹脂シートによって形成された筒状の被成形材から、底部に穴が形成されたカップ状の成形体を成形するための成形型であって、
上部側が前記成形体の底部側に、下部側が前記成形体の上端開口部側に対応するように、所定形状に形成された本体部と、
前記本体部に被嵌した筒状の前記被成形材を加熱収縮させる際、その被成形材の上端部を予備的に整形する予備整形部と、
成形完了後の前記成形体を押し上げて前記本体部から離型する離型部と
を備え、
前記予備整形部は、
前記成形体の底部を成形するための底部成形面に対して出没可能に支持された可動整形部材と、この可動整形部材を、前記底部成形面から突出させた状態に付勢する付勢手段とを有し、
前記本体部に被嵌した筒状の前記被成形材を加熱収縮させることによって、前記被成形材の上端部を、前記底部成形面から突出した前記可動整形部材に沿わせた状態で、押圧部材によって前記可動整形部材を押し下げて前記成形体の上端部を前記底部成形面に押し付けることで、前記成形体の底部を成形するようにしたことを特徴とする成形型。
A molding die for molding a cup-shaped molded body in which a hole is formed in the bottom from a cylindrical molding material formed by a synthetic resin sheet having heat shrinkability,
A main body formed in a predetermined shape such that the upper side corresponds to the bottom side of the molded body and the lower side corresponds to the upper end opening side of the molded body;
A pre-shaping part for preliminarily shaping the upper end of the molding material when the cylindrical molding material fitted to the main body is heated and shrunk;
A mold release part that pushes up the molded body after completion of molding and releases it from the main body part,
The preliminary shaping unit is
A movable shaping member supported so as to be movable in and out with respect to a bottom molding surface for molding the bottom of the molded body, and a biasing means for biasing the movable shaping member to a state of protruding from the bottom molding surface; Have
By pressing and shrinking the cylindrical molding material fitted to the main body, the pressing member in a state where the upper end portion of the molding material is aligned with the movable shaping member protruding from the bottom molding surface. A molding die characterized in that the bottom of the molded body is molded by pressing down the movable shaping member and pressing the upper end of the molded body against the bottom molding surface.
JP2008062282A 2008-03-12 2008-03-12 Mold Expired - Fee Related JP5090970B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008062282A JP5090970B2 (en) 2008-03-12 2008-03-12 Mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008062282A JP5090970B2 (en) 2008-03-12 2008-03-12 Mold

Publications (2)

Publication Number Publication Date
JP2009214481A JP2009214481A (en) 2009-09-24
JP5090970B2 true JP5090970B2 (en) 2012-12-05

Family

ID=41186878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008062282A Expired - Fee Related JP5090970B2 (en) 2008-03-12 2008-03-12 Mold

Country Status (1)

Country Link
JP (1) JP5090970B2 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5544846A (en) * 1978-09-28 1980-03-29 Fuji Seal Kogyo Kk Bottomed cylindrical body made of thermoshrinking tube and method of producing same
JPS6234751Y2 (en) * 1980-08-11 1987-09-04
JP4158436B2 (en) * 2002-07-01 2008-10-01 東洋製罐株式会社 Container forming method and container forming jig
JP2006248539A (en) * 2005-03-08 2006-09-21 Fuji Seal International Inc Thermally insulated container
JP4766942B2 (en) * 2005-07-20 2011-09-07 株式会社フジシールインターナショナル Mold

Also Published As

Publication number Publication date
JP2009214481A (en) 2009-09-24

Similar Documents

Publication Publication Date Title
US6324813B1 (en) Decorative sleeve cover formed of a polymeric material having a cloth-appearing finish on a surface thereof
CA2929537C (en) Tool organizer and method of making the same
JP5933784B1 (en) Decorative method, decorative sheet, molded sheet and method for producing the same
JP5090970B2 (en) Mold
JP4785981B1 (en) Curing sheet for concrete
JP3201121U (en) Cup with anti-slip effect and heat insulation effect
EP3563705A1 (en) Flexible film article
KR101888575B1 (en) Door trim structures comprising heating layer and menufacturing method thereof
JP2006240697A (en) Heat-shrinkable cylindrical label and method for mounting heat-shrinkable cylindrical label
US3962013A (en) Method of forming a bearing hole in the body of a strap member mainly adapted for use as a watch strap
JP3177286U (en) Cup holder
JP2009232748A (en) Plant container
JP2008131936A (en) Flowerpot cover, flowerpot, method for producing flowerpot cover, and kit for making flowerpot cover
US20090278027A1 (en) Molding set for crating 3-dimensional patterns
JP6469039B2 (en) Decorative method, decorative sheet, molded sheet and method for producing the same
JP2010142484A (en) Scarf ring for decoration
JP3137251U (en) Decorative body with uneven surface
JP4298483B2 (en) Insulation container and insulation sheet for exterior
JP2010057916A (en) Method for installing grip member and the grip member
JP4881248B2 (en) Shrinkage molded body manufacturing method and shrinkage molded body
JPH02121997U (en)
KR20190026489A (en) double injection steering wheel for vehicle having heating function
JP6144105B2 (en) Petal protection sheet
JP5388287B2 (en) Tray and tray manufacturing equipment
JP2008037452A (en) Heat-insulated container

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20110201

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120906

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120911

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120913

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150921

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees