JP2002307415A - Mold for press molding - Google Patents
Mold for press moldingInfo
- Publication number
- JP2002307415A JP2002307415A JP2001111583A JP2001111583A JP2002307415A JP 2002307415 A JP2002307415 A JP 2002307415A JP 2001111583 A JP2001111583 A JP 2001111583A JP 2001111583 A JP2001111583 A JP 2001111583A JP 2002307415 A JP2002307415 A JP 2002307415A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- valve
- press molding
- mold surface
- press
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/10—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article
- B28B7/12—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article by fluid pressure, e.g. acting through flexible wall parts or linings of the moulds
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、プレス成形用金型
に係り、特に粘土やセメント混練物などの可塑性の素体
をプレスして目的形状の成形体を成形するのに好適なプ
レス成形用金型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press molding die, and more particularly to a press molding die suitable for pressing a plastic element such as clay or cement kneaded material to form a molded article of a desired shape. Regarding the mold.
【0002】[0002]
【従来の技術】凹凸面を有した板状建材等を成形する場
合、粘土やセメント混練物などの可塑性を有した板状の
素体(以下、この素体を生板ということがある)を上型
と下型とを有したプレス成形用金型に収容してプレス成
形し、その後硬化処理したり焼成することが従来より広
く行われている。2. Description of the Related Art When molding a plate-like building material having an uneven surface, a plastic plate-like element such as clay or cement kneaded material (hereinafter, this element is sometimes referred to as a raw sheet) is used. 2. Description of the Related Art It has been widely practiced to accommodate a press-molding mold having an upper mold and a lower mold and press-mold it, and then perform hardening treatment and firing.
【0003】このような金型によるプレス成形に際し、
金型内面と生板との間に空気が残留すると、明瞭な凹凸
模様を転写できなかったりするおそれがある。In press molding with such a mold,
If air remains between the inner surface of the mold and the green plate, a clear uneven pattern may not be transferred.
【0004】そこで、金型の内面(型面)と金型外部と
を通気孔等で連通したり、金型の型面を通気性の多孔質
材とし、該型面を大気に連通させることが行われてい
る。さらに、脱型に際し、この通気孔や多孔質材を介し
て空気を吹かし、成形物を型面から離脱させることも行
われている。Therefore, the inner surface (mold surface) of the mold is communicated with the outside of the mold through a vent or the like, or the mold surface of the mold is made of a permeable porous material, and the mold surface is communicated with the atmosphere. Has been done. Further, at the time of demolding, air is blown through the air holes and the porous material to release the molded product from the mold surface.
【0005】[0005]
【発明が解決しようとする課題】通気孔や多孔質材に空
気を供給することにより、脱型をスムーズに行うことが
可能となるが、空気を供給するためのコンプレッサや配
管が必要となり、設備が大掛かりとなる。By supplying air to the air holes and the porous material, it is possible to perform the demolding smoothly, but a compressor and a pipe for supplying the air are required, and the equipment is required. Becomes a large scale.
【0006】本発明は、簡易な設備にて脱型をスムーズ
に行うことができ、しかもプレス成形時には型面から空
気を速やかに排出することができるプレス成形用金型を
提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a press molding die which can smoothly remove a mold with simple equipment and can quickly discharge air from the mold surface during press molding. I do.
【0007】[0007]
【課題を解決するための手段】本発明のプレス成形用金
型は、型同士の間にて原材料を挟圧してプレス成形する
ためのプレス成形用金型であって、型面と金型外部とを
連通する通気孔が設けられているプレス成形用金型にお
いて、該通気孔の該型面に臨む箇所に、開弁時には閉弁
時よりも該型面から突出する弁が設けられていると共
に、該弁を該突出方向に付勢する弾性部材が設けられて
いることを特徴とするものである。Means for Solving the Problems A press molding die according to the present invention is a press molding die for press-forming by pressing raw materials between the dies. In a press-molding die provided with a vent hole communicating with the mold, a valve projecting from the mold surface at the time of opening the valve than at the time of closing the valve is provided at a position facing the mold surface of the vent hole. In addition, an elastic member for urging the valve in the projecting direction is provided.
【0008】かかるプレス成形用金型によると、型同士
の間に生板等の原材料を挟んでプレスする場合、プレス
初期にあっては弁が開いており、該原材料と型面との間
の空気が通気孔を通って外部に排出される。プレス圧を
高めていくと、該弁が原材料に押されて閉弁し、プレス
成形が行われる。この閉弁状態の弁は、脱型時に弾性部
材により付勢されて突出し、成形物を型面から離反させ
る。このため、脱型をスムーズに行うことができる。According to such a press molding die, when a raw material such as a raw plate is pressed between the dies and pressed, a valve is opened at an initial stage of the press, and a gap between the raw material and the mold surface is formed. Air is exhausted to the outside through the vent. When the press pressure is increased, the valve is pushed by the raw material and the valve closes, and press molding is performed. The valve in the closed state is urged by the elastic member to protrude when the mold is released, and separates the molded product from the mold surface. For this reason, demolding can be performed smoothly.
【0009】この弁を、閉弁時に型面と略面一状となる
よう構成することにより、成形物に弁の痕が全く又は殆
ど付かないものとなる。By forming the valve so as to be substantially flush with the mold surface when the valve is closed, the molded product has no or little mark on the valve.
【0010】本発明では、金型は上型と下型とを有して
おり、前記弁は該下型の型面に設けられており、該上型
の型面のうち該弁の上方部分は凹所となっている構成と
することが好ましい。プレス成形時には、この上型の凹
所の部分めがけて原材料が寄せ集められる如く移動する
ので、この凹所に空気が集まり易い。そこで、少なくと
も凹所の最奥部に臨む上記の型面を通気性の多孔質とし
ておくことにより、凹所に溜ろうとする空気を金型外部
に排出することができ、鮮明な模様を成形物に形成する
ことができる。In the present invention, the mold has an upper mold and a lower mold, and the valve is provided on a mold surface of the lower mold, and an upper portion of the mold surface of the upper mold above the valve. Is preferably a recess. At the time of press molding, since the raw materials move toward the concave portion of the upper die so that the raw materials are gathered, air tends to collect in the concave portion. Therefore, by making at least the mold surface facing the innermost part of the recess into a porous material, air that is going to accumulate in the recess can be discharged to the outside of the mold, and a clear pattern can be formed. Can be formed.
【0011】また、上記の通り、上記の凹所めがけて原
材料が寄せ集められるように移動する場合、原材料は上
型の型面だけでなく下型の型面に沿っても同様に移動し
ようとし、この結果凹所の下方の下型型面に空気が集ま
り易くなる。そこで、この上型凹所の下方の下型型面に
前記弁を配置すると、この下型型面に沿って残留しよう
とする空気をスムーズに金型外に排出することができ
る。Further, as described above, when the raw materials move so as to be gathered toward the recess, the raw materials also tend to move not only along the upper mold surface but also along the lower mold surface. As a result, air tends to collect on the lower mold surface below the recess. Therefore, if the valve is arranged on the lower mold surface below the upper mold recess, the air that tends to remain along the lower mold surface can be smoothly discharged out of the mold.
【0012】[0012]
【発明の実施の形態】以下、図面を参照して実施の形態
について説明する。図1(a)は実施の形態に係るプレ
ス成形用金型の縦断面図、図1(b)、(c)は図1
(a)のB,C部分の拡大図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a longitudinal sectional view of a press molding die according to an embodiment, and FIGS. 1B and 1C are FIGS.
It is an enlarged view of B and C part of (a).
【0013】このプレス成形用金型は、上型1及び下型
2が枠状の側方型3に内嵌されたものであり、該上型1
及び下型2は該側方型3の内面を摺動して上下方向移動
可能となっている。In this press molding die, an upper die 1 and a lower die 2 are fitted inside a frame-shaped side die 3.
The lower mold 2 slides on the inner surface of the side mold 3 and is movable in the vertical direction.
【0014】上型1の型面(下面)4は凹所5を有した
曲面よりなる。この凹所5は、その周囲に比べて凹陥し
たものである。この凹所5の最奥部と金型外部(この実
施の形態では上型1の上面)とを連通するように通気孔
6が設けられている。この通気孔6の型面4に臨む部分
は多孔質材7にて構成されている。この実施の形態で
は、多孔質材7は多孔質金属焼結体、多孔質合成樹脂、
不織布などにて構成されている。The mold surface (lower surface) 4 of the upper mold 1 is a curved surface having a recess 5. This recess 5 is recessed compared to its surroundings. A ventilation hole 6 is provided so as to communicate the innermost part of the recess 5 with the outside of the mold (the upper surface of the upper mold 1 in this embodiment). The portion of the vent 6 facing the mold surface 4 is made of a porous material 7. In this embodiment, the porous material 7 is made of a porous metal sintered body, a porous synthetic resin,
It is composed of a nonwoven fabric or the like.
【0015】下型2の型面(上面)8は平坦である。こ
の実施の形態では、凹所5の最奥部の鉛直下方に通気孔
9が設けられ、型面8と金型外部(この実施の形態では
下型2の下面9とを連通している。この通気孔9の型面
8に臨む面に弁10が設けられている。この弁10はバ
ネ11によって付勢されており、外部から荷重を受けな
いときには弁10は型面8から突出している。弁10が
最も後退すると、通気孔9の先端のテーパ状部分12に
着座し、通気孔9を閉鎖する。なお、この閉弁状態にあ
っては、弁10の上面は型面8と略面一となる。The mold surface (upper surface) 8 of the lower mold 2 is flat. In this embodiment, a ventilation hole 9 is provided vertically below the innermost part of the recess 5 to communicate the mold surface 8 with the outside of the mold (in this embodiment, the lower surface 9 of the lower mold 2). A valve 10 is provided on a surface of the ventilation hole 9 facing the mold surface 8. The valve 10 is urged by a spring 11, and the valve 10 projects from the mold surface 8 when no load is applied from the outside. When the valve 10 retreats most, it sits on the tapered portion 12 at the tip of the vent hole 9 and closes the vent hole 9. In this closed state, the upper surface of the valve 10 is substantially the same as the mold surface 8. Become flush.
【0016】このように構成されたプレス成形用金型を
用いて建材等のプレス成形を行うには、上型1を側方型
3から離脱させた状態にて生板等の原材料を下型2上に
置くようにして原材料のチャージを行う。次いで、上型
1を側方型3に嵌合させて原材料をプレスする。In order to press-form building materials and the like using the press-molding die configured as described above, the raw material such as a raw plate is transferred to the lower die while the upper die 1 is separated from the side die 3. 2. Charge the raw materials by placing them on the top. Next, the upper mold 1 is fitted to the side mold 3 and the raw material is pressed.
【0017】このプレス開始当初にあっては、弁10は
若干ながら型面8から突出しており、型面8と原材料と
の間の残留空気が通気孔9を通って排出される。プレス
圧が増大すると、弁10がテーパ部12に着座して通気
孔9が閉じる。この場合、弁10の上面が型面8と面一
状となるため、成形物の下面に弁10の痕は付かない。At the beginning of the press, the valve 10 slightly protrudes from the mold surface 8, and the residual air between the mold surface 8 and the raw material is discharged through the ventilation hole 9. When the press pressure increases, the valve 10 is seated on the tapered portion 12 and the vent 9 closes. In this case, since the upper surface of the valve 10 is flush with the mold surface 8, no mark of the valve 10 is left on the lower surface of the molded product.
【0018】また、このプレス工程の間、原材料と型面
4との間にあっては、原材料が型面4に沿って凹所5め
がけて移動し、これに伴って原材料と型面4との間の空
気が凹所5に集まってくる。この凹所5に集まってきた
空気が多孔質材7を通り通気孔6を介して金型外に排出
される。Also, during the pressing step, between the raw material and the mold surface 4, the raw material moves along the mold surface 4 toward the recess 5, and accordingly, the gap between the raw material and the mold surface 4 is increased. Air gathers in the recess 5. The air collected in the recess 5 passes through the porous material 7 and is discharged out of the mold through the vent hole 6.
【0019】これにより、凹所5の最奥部にまで原材料
が充填され、型面4の凹凸が鮮明に転写された成形物を
成形することが可能となる。As a result, the raw material is filled up to the innermost portion of the concave portion 5, and it is possible to form a molded product in which the irregularities of the mold surface 4 are clearly transferred.
【0020】脱型に際しては、上型1を上方に退動させ
るか、又は下型2を下方に退動させる。このように上型
1と下型2とを離反させると、成形物に加えられていた
プレス圧が解放されるので、バネ11の押圧力により弁
10が上方に突出し、成形物の下面と型面8との間に通
気孔9を介して空気が入り込む。そのため、成形物を型
面8からスムーズに離型させることができる。When releasing the mold, the upper mold 1 is moved upward or the lower mold 2 is moved downward. When the upper mold 1 and the lower mold 2 are separated from each other in this manner, the press pressure applied to the molded product is released, so that the valve 10 projects upward by the pressing force of the spring 11, and the lower surface of the molded product and the mold Air enters through a vent hole 9 with the surface 8. Therefore, the molded product can be smoothly released from the mold surface 8.
【0021】なお、上型1の型面4と成形物との間に
も、通気孔6及び多孔質材7を介して空気が入り込むの
で、成形物を型面4からもスムーズに離型させることが
できる。Since air enters between the mold surface 4 of the upper mold 1 and the molded product through the air holes 6 and the porous material 7, the molded product is smoothly released from the mold surface 4. be able to.
【0022】上記実施の形態は本発明の一例であり、本
発明は上記以外の形態をもとりうる。例えば、上記実施
の形態では弁10を下型2の通気孔9にのみ設けている
が、上型1の通気孔6にも弁10を設けてもよい。ま
た、図示の金型の断面形状は本発明の一例であり、図示
以外の金型断面形状としてもよいことは明らかである。
さらに、原材料の材質には全く制限はない。The above embodiment is an example of the present invention, and the present invention can take other forms. For example, in the above embodiment, the valve 10 is provided only in the ventilation hole 9 of the lower die 2, but the valve 10 may be provided also in the ventilation hole 6 of the upper die 1. Also, the cross-sectional shape of the illustrated mold is an example of the present invention, and it is obvious that the cross-sectional shape of the mold other than that illustrated may be used.
Further, there is no limitation on the material of the raw material.
【0023】[0023]
【発明の効果】以上の通り、本発明のプレス成形用金型
によると、簡易な設備にて脱型をスムーズに行うことが
でき、しかもプレス成形時には型面から空気を速やかに
排出することができる。As described above, according to the press molding die of the present invention, demolding can be smoothly performed with simple equipment, and air can be quickly discharged from the mold surface during press molding. it can.
【図1】図1(a)は実施の形態に係るプレス成形用金
型の縦断面図、図1(b)、(c)は図1(a)のB,
C部分の拡大図である。FIG. 1 (a) is a longitudinal sectional view of a press-molding die according to an embodiment, and FIGS. 1 (b) and 1 (c) are B and B in FIG. 1 (a).
It is an enlarged view of C part.
1 上型 2 下型 3 側方型 4,8 型面 5 凹所 6,9 通気孔 10 弁 DESCRIPTION OF SYMBOLS 1 Upper mold 2 Lower mold 3 Side mold 4,8 Mold surface 5 Concave part 6,9 Vent 10 Valve
───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 4G053 AA07 BE07 CA03 CA04 EA26 4G054 AA01 AB03 BA43 BA72 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4G053 AA07 BE07 CA03 CA04 EA26 4G054 AA01 AB03 BA43 BA72
Claims (4)
成形するためのプレス成形用金型であって、 型面と金型外部とを連通する通気孔が設けられているプ
レス成形用金型において、 該通気孔の該型面に臨む箇所に、開弁時には閉弁時より
も該型面から突出する弁が設けられていると共に、 該弁を該突出方向に付勢する弾性部材が設けられている
ことを特徴とするプレス成形用金型。1. A press-forming mold for press-forming by pressing raw materials between dies, the press-forming mold having a vent hole communicating a mold surface and the outside of the mold. In the mold, a valve protruding from the mold surface when the valve is opened is provided at a position facing the mold surface of the vent hole than when the valve is closed, and an elastic member for urging the valve in the projecting direction. A press molding die, characterized by being provided with:
は型面と略面一状となることを特徴とするプレス成形用
金型。2. The press molding die according to claim 1, wherein the valve is substantially flush with a mold surface when the valve is closed.
型と下型とを有しており、 前記弁は該下型の型面に設けられており、 該上型の型面のうち該弁の上方部分は凹所となっている
ことを特徴とするプレス成形用金型。3. The mold according to claim 1, wherein the mold has an upper mold and a lower mold, and the valve is provided on a mold surface of the lower mold. A press molding die, wherein an upper part of the valve is a recess.
も最奥部に臨む上型の型面が通気性の多孔質材にて構成
され、且つ該多孔質材が金型の外部に連通していること
を特徴とするプレス成形用金型。4. The mold according to claim 3, wherein the upper mold surface facing at least the innermost part of the recess is formed of a porous material having air permeability, and the porous material communicates with the outside of the mold. A die for press molding, characterized in that:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001111583A JP2002307415A (en) | 2001-04-10 | 2001-04-10 | Mold for press molding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001111583A JP2002307415A (en) | 2001-04-10 | 2001-04-10 | Mold for press molding |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2002307415A true JP2002307415A (en) | 2002-10-23 |
Family
ID=18963156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001111583A Pending JP2002307415A (en) | 2001-04-10 | 2001-04-10 | Mold for press molding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2002307415A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013184178A (en) * | 2012-03-07 | 2013-09-19 | Hitachi Zosen Corp | Apparatus and method for manufacturing molded product |
-
2001
- 2001-04-10 JP JP2001111583A patent/JP2002307415A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013184178A (en) * | 2012-03-07 | 2013-09-19 | Hitachi Zosen Corp | Apparatus and method for manufacturing molded product |
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