JPH10211621A - Mold - Google Patents

Mold

Info

Publication number
JPH10211621A
JPH10211621A JP1699797A JP1699797A JPH10211621A JP H10211621 A JPH10211621 A JP H10211621A JP 1699797 A JP1699797 A JP 1699797A JP 1699797 A JP1699797 A JP 1699797A JP H10211621 A JPH10211621 A JP H10211621A
Authority
JP
Japan
Prior art keywords
molding
concrete
molding body
molded body
coefficient
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
Application number
JP1699797A
Other languages
Japanese (ja)
Inventor
Keisuke Murakami
圭佑 村上
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.)
MURAKAMI SHOKAI KK
Original Assignee
MURAKAMI SHOKAI KK
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 MURAKAMI SHOKAI KK filed Critical MURAKAMI SHOKAI KK
Priority to JP1699797A priority Critical patent/JPH10211621A/en
Publication of JPH10211621A publication Critical patent/JPH10211621A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/38Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2709/00Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
    • B29K2709/06Concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of cracks in a molding body even if the molding body is subjected to a thermal cycle of being heated and cooled by allowing the coefficient of linear thermal expansion of a retaining member in a width direction of the molding body to match with that of the molding body. SOLUTION: A molding body 22 for a female mold A is filled in a space 23a between a master molding surface 21a of a master mold 21 and a molding layer 23. Secured to the back to the molding layer 23 are a joint-strengthening member 24, a strengthening member 25 and a concrete 27 that function as a retaining member. The concrete 27 is introduced into an iron formwork 29 and timbers 28, 32 are imbedded in a cement material. Since the molding body 22, molding layer 23, joint- strengthening member 23 and strengthening member 25 are all composed mainly of a thermosetting synthetic resin, the coefficients of linear thermal expansion thereof are substantially in the order of 30×10<-6> , and therefore even if the molding body 22 is contracted or expanded, there is generated no crack. In addition, since the coefficient of linear thermal expansion in a longitudinal direction of the timber 28 is great, it is possible to allow the contraction and/or expansion of the entire concrete 27 to match with the contraction and/or expansion of the molding body 22.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、インジェクショ
ン成形,ブロー成形,メトン成形,ウレタンリム成形あ
るいはプレス成形等の成形に用いる成形型に関するもの
である。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold used for molding such as injection molding, blow molding, meton molding, urethane rim molding or press molding.

【0002】[0002]

【従来の技術】従来、特開平8−47732号によりウ
レタン,アクリル,エポキシまたはポリエステル等の2
液混合の熱硬化性合成樹脂に、鉄粉等の金属から成る骨
材及びひび割れを防ぐためのつなぎ材を適当量混合した
ものをミキシングマシンで混練し、その混練した未硬化
の材料をマスター型の表面(マスター成形表面)に付着
して成形しながら硬化させることにより表面層としての
成形体を得ている。図5に、成形体3,13を含む雌型
1と雄型11の成形型を示し、同図において、雌型1,
雄型11の成形体3,13の後面には、型枠4,14で
囲まれたコンクリートから成る保持材2,12が打設さ
れ、このコンクリートから成る保持材2,12は緩衝部
材6,16を介して支持板5,15に取付けられてい
る。
2. Description of the Related Art Conventionally, Japanese Unexamined Patent Publication No. Hei 8-47732 discloses a method using urethane, acrylic, epoxy or polyester.
A mixture of thermosetting synthetic resin mixed with an appropriate amount of an aggregate made of metal such as iron powder and a binder for preventing cracking is kneaded with a mixing machine, and the kneaded uncured material is used as a master mold. A molded product as a surface layer is obtained by being cured while adhering to the surface (master molding surface) of the product. FIG. 5 shows a molding die of the female die 1 including the molded bodies 3 and 13 and the male die 11, and in FIG.
On the rear surfaces of the molded bodies 3 and 13 of the male mold 11, holding members 2 and 12 made of concrete surrounded by molds 4 and 14 are cast. 16 are attached to the support plates 5 and 15.

【0003】雌型1と雄型11とをプレス機にセット
し、これ等の間にワークWを置いて、雄型11を下降さ
せて雄型11を雌型1に落し込むことにより、ワークW
を遡性変形して成形できる。
[0003] The female mold 1 and the male mold 11 are set on a press machine, a work W is placed between them, and the male mold 11 is lowered to drop the male mold 11 into the female mold 1. W
Can be formed by retroactive deformation.

【0004】このように成形体3,13を、2液混合の
熱硬化性合成樹脂を主成分とするものから成形して成形
型を構成することにより、従来の鋳型を切削,研磨して
加工して金型として製造するものに比して製造を簡略化
でき、かつ製造工期を短くできる。
[0004] As described above, the moldings 3 and 13 are molded from a two-component mixed thermosetting synthetic resin as a main component to form a molding die. As a result, the manufacturing can be simplified and the manufacturing period can be shortened as compared with the case of manufacturing as a mold.

【0005】[0005]

【発明が解決しようとする課題】しかし、従来は成形体
3,13の線膨張率とコンクリートから成る保持材2,
12の線膨張率とが異なるために、特にこれをそのまま
加熱成形型,冷却成形型として使用すると、加熱,冷却
の熱サイクルを受けることにより成形体3,13にクラ
ックが入るという欠点があった。
However, conventionally, the coefficient of linear expansion of the compacts 3 and 13 and the holding material 2 made of concrete have been known.
Since the coefficient of linear expansion is different from that of No. 12, particularly when this is used as it is as a heating mold or a cooling mold, there is a disadvantage that cracks occur in the molded bodies 3 and 13 due to a heat cycle of heating and cooling. .

【0006】この発明は上記課題を解決するためになさ
れたもので、加熱,冷却の熱サイクルを受けても成形体
にクラックが入らないようにする。
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and is intended to prevent cracks in a molded product even when subjected to a heat cycle of heating and cooling.

【0007】[0007]

【課題を解決するための手段】請求項1に係る発明で
は、2液混合の熱硬化性の合成樹脂より成る成形体と、
この成形体が成形面側に被着された保持材とより成る成
形型であって、上記保持材の上記成形体の幅方向の線膨
張率を、上記成形体の線膨張率に揃えるようにした。
According to the first aspect of the present invention, there is provided a molded article made of a two-component mixed thermosetting synthetic resin,
This molding is a molding die comprising a holding material adhered to a molding surface side, and a linear expansion coefficient of the holding material in a width direction of the molding is adjusted to a linear expansion coefficient of the molding. did.

【0008】請求項2に係る発明では、保持材は、2液
混合の熱硬化性の合成樹脂より成る強度材から成るもの
である。
In the invention according to claim 2, the holding material is made of a strength material made of a two-component mixed thermosetting synthetic resin.

【0009】請求項3に係る発明では、保持材は、コン
クリートから成る。
[0009] In the invention according to claim 3, the holding material is made of concrete.

【0010】請求項4に係る発明は、コンクリート中
に、上記成形体に対し直角方向に延長するとともに、上
記コンクリートの線膨張率よりも大きい線膨張率を有す
る棒体を埋設した。
According to a fourth aspect of the present invention, a rod extending in a direction perpendicular to the molded body and having a linear expansion coefficient larger than that of the concrete is buried in the concrete.

【0011】請求項5に係る発明は、保持材は、成形体
の裏側に、冷熱又は温熱を伝導する熱伝導体を有するも
のである。
According to a fifth aspect of the present invention, the holding member has a heat conductor that conducts cold or warm heat on the back side of the molded body.

【0012】請求項6に係る発明は、請求項2の強度材
の裏側に、請求項3のコンクリートを一体化して成る。
According to a sixth aspect of the present invention, the concrete of the third aspect is integrated with the back side of the strength member of the second aspect.

【0013】[0013]

【発明の実施の形態】BEST MODE FOR CARRYING OUT THE INVENTION

実施の形態1.図1,図2は本発明による成形型の一実
施の形態を示す断面図であり、各図において、Aは雌
型、Bは雄型であり、これ等は同一構成となっており、
表面層としての成形体22,42と、この成形体22,
42の後面を支持する成形層23,43と、この成形層
23,43の後面に一体化されたパテ状の接合強度材2
4,44と、上記接合強度材24,44の後面に一体化
された強度材25,45と、上記成形体22,42の後
部に埋設されて、上記成形層23,43で被われる、冷
熱又は温熱の熱伝導パイプより成る熱伝導体26,46
と、上記強度材25,45の後面に一体化される強硬度
コンクリート27,47と、上記成形体22,42に対
して直角方向に延長する如くコンクリート27,47中
に埋設された棒体としての木材28,48、木材32,
52と、上記コンクリート27,47の外周に位置され
る鉄板型枠29,49と、コンクリート27の後面に位
置される平面取付プレート30,50と、コンクリート
27,47の後面に埋設されたナット33,53にプレ
ート30,50を取付けるボルト31,51とから成
る。上記接合強度材24,44、強度材25,45、コ
ンクリート27,47により成形体22,42の保持材
が構成される。
Embodiment 1 FIG. 1 and 2 are cross-sectional views showing an embodiment of a mold according to the present invention. In each figure, A is a female mold, B is a male mold, and these have the same configuration.
Moldings 22 and 42 as surface layers;
42, and a putty-like joining strength material 2 integrated with the rear surfaces of the molding layers 23, 43.
4 and 44, strength members 25 and 45 integrated on the rear surfaces of the joining strength members 24 and 44, and cold and heat embedded in the rear portions of the molded bodies 22 and 42 and covered with the molded layers 23 and 43. Or heat conductors 26 and 46 comprising heat conduction pipes of heat.
And hard concrete 27, 47 integrated with the back surface of the strength members 25, 45, and a rod embedded in the concrete 27, 47 so as to extend in a direction perpendicular to the molded bodies 22, 42. Wood 28, 48, wood 32,
52, iron plate forms 29, 49 located on the outer periphery of the concretes 27, 47, flat mounting plates 30, 50 located on the rear surface of the concrete 27, and nuts 33 embedded in the rear surfaces of the concrete 27, 47. , 53 and bolts 31, 51 for attaching the plates 30, 50 to them. The joining strength members 24, 44, the strength members 25, 45, and the concrete 27, 47 constitute holding members for the molded bodies 22, 42.

【0014】図1において、雌型Aの成形体22は、例
えばアルミニウム粉体の75%を2液樹脂の中に混入し
て、混練して液状化した液状体を、マスター型21のマ
スター成形表面21aと、成形層23との間で得られる
層状の空間23aを真空引きした後に図外のゲートを介
して注入しつつ真空を破るようにして、大気圧の力で空
間23aに充てんされる。このような成形体22はアル
ミニウム粉体が混入されることで線膨張率がほぼ60×
10-6からほぼ30×10-6に減少する。
In FIG. 1, a molded body 22 of a female mold A is formed by mixing a liquid obtained by mixing 75% of aluminum powder into a two-liquid resin, kneading and liquefying, for example, a master molding of a master mold 21. After vacuuming the layered space 23a obtained between the surface 21a and the molding layer 23, the space 23a is filled with the force of the atmospheric pressure so as to break the vacuum while injecting through a gate (not shown). . Such a molded body 22 has a linear expansion coefficient of approximately 60 ×
It is reduced from 10 −6 to approximately 30 × 10 −6 .

【0015】この場合、成形層23は、FRP,炭素繊
維等の繊維シートに、フェノール樹脂等の熱硬化性の合
成樹脂を含浸させたものを図外の成形型に、熱伝導体2
6を被うようにセットし、加熱炉中に投入して硬化する
ことにより帽子状に成形されたもので、これをマスター
型21の上に配置することで、マスター型21のマスタ
ー成形表面との間で成形空間23aが得られる。
In this case, the molding layer 23 is formed by impregnating a fiber sheet such as FRP or carbon fiber with a thermosetting synthetic resin such as phenol resin in a molding die (not shown).
6 is set so as to cover it, and is put into a heating furnace and cured to form a hat shape. By arranging this on the master mold 21, the master molding surface of the master mold 21 is removed. A molding space 23a is obtained between the two.

【0016】この場合、成形層23の外周の縁23b
は、マスター型21の外周表面に接し、かつ筒状の鉄板
型枠29の先端で押圧されるので、空間23aを気密に
保つことができる。成形空間23aを真空引きした後、
上記2液混合の熱硬化性の合成樹脂を主成分とする液状
体を、真空を破りつつ空間23aに図外のゲートを介し
て充てんすることにより、この液状体は空間23a及び
熱伝導体26の回りからマスター型21のマスター成形
表面21aに形成された微細な線溝等に浸入して馴んで
行き、しかも気泡も真空引きされるので、このようにし
て得られた成形体22の表面の成形面はマスター型21
の表面に正確に適合した気泡を含まない高精度の成形面
となる。
In this case, the outer edge 23b of the molding layer 23
Is in contact with the outer peripheral surface of the master mold 21 and is pressed by the tip of the cylindrical iron plate formwork 29, so that the space 23a can be kept airtight. After evacuating the molding space 23a,
The space 23a is filled with a liquid containing a thermosetting synthetic resin as a main component through a gate (not shown) while breaking the vacuum, so that the liquid is filled with the space 23a and the heat conductor 26. From around, it penetrates into a fine line groove or the like formed on the master molding surface 21a of the master mold 21 and becomes accustomed to the air bubbles. Further, air bubbles are evacuated. Molding surface is master mold 21
It is a high-precision molding surface that does not contain air bubbles that exactly fits the surface.

【0017】上記接合強度材24は、上記成形層23の
後面に固着され、上記強度材25の接合材として機能す
るもので、この接合強度材24は例えば、鉄粉を2液混
合の熱硬化性の合成樹脂に混合したペースト状体を成形
層23の表面に被着し、また強度材25は石,砂等、コ
ンクリート27と馴みの良好なものを2液混合の熱硬化
性合成樹脂に混合したペースト状体を接合強度材25の
表面に被着したものである。これ等接合強度材24及び
強度材25は加熱炉中に供され、加熱して硬化される。
コンクリート27は、セメントに水、混和剤、砂、鉄粉
又はアルミニウム粉等の微粉フェラーをミキサーの高速
回転で混練したセメント材が用いられる。
The bonding strength material 24 is fixed to the rear surface of the molding layer 23 and functions as a bonding material for the strength material 25. The bonding strength material 24 is, for example, a thermosetting mixture of two powders of iron powder. A paste-like material mixed with a water-soluble synthetic resin is adhered to the surface of the molding layer 23, and the strength material 25 is a thermosetting synthetic resin of a two-liquid mixture of a material such as stone, sand, etc., which is familiar with the concrete 27. Is adhered to the surface of the bonding strength material 25. The bonding strength material 24 and the strength material 25 are provided in a heating furnace and are cured by heating.
As the concrete 27, a cement material is used in which a fine powder ferrer such as water, an admixture, sand, iron powder or aluminum powder is kneaded with high-speed rotation of a mixer.

【0018】強硬度コンクリート27は、マスター型の
外周に筒状の鉄板型枠29が立てられているので、この
鉄板型枠29内の内部空間にセメントが投入される。上
記セメント材は、上記木材28及び木材32を垂直に埋
設し、プレート30で蓋をして、ナット33を埋めた状
態で固化される。
In the hard concrete 27, since a cylindrical iron plate formwork 29 is erected on the outer periphery of the master mold, cement is put into the internal space in the iron plate formwork 29. The cement material is solidified with the wood 28 and the wood 32 buried vertically, covered with a plate 30 and a nut 33 buried.

【0019】木材28、木材32は先端を強度材25中
に埋めて、垂直に立てた状態で強度材25を熱硬化する
ことにより、成形層23に対して直角な状態を保ち、こ
の木材28、木材32を含む鉄板型枠29中に上記セメ
ント材が投入される。上記木材32は、木材28の所定
本数を隔てて設けられ、その後端は平面取付プレート3
0に接地するが、多数の木材28の後端は上記平面取付
プレート30より浮いている。
The wood 28 and the wood 32 are buried at their ends in a strength material 25, and the strength material 25 is thermally hardened in a vertically standing state, thereby maintaining a state perpendicular to the molding layer 23. The cement material is put into the iron plate formwork 29 including the wood 32. The wood 32 is provided at a predetermined number of woods 28, and the rear end of the wood 32 is a flat mounting plate 3.
Although it is grounded to zero, the rear ends of the many pieces of wood 28 are floating above the flat mounting plate 30.

【0020】木材28、木材32は節目が、その長手方
向(垂直方向)に沿って延長する。ここで、線膨張率に
ついて述べると、成形体22、成形層23、接合強度材
24、強度材25は、いずれも熱硬化性の合成樹脂を主
成分とするので、線膨張率は、ほぼ30×10-6程度で
あり、従って成形体22が収縮,膨張しても、成形層2
3,接合強度材24,強度材25は、この成形体22に
同調して収縮,膨張するので成形体22に対し応力があ
まり作用せず、成形体22をクラックさせてしまうこと
はない。
The timbers of the timber 28 and the timber 32 extend in the longitudinal direction (vertical direction). Here, regarding the coefficient of linear expansion, since the molded body 22, the molded layer 23, the bonding strength member 24, and the strength member 25 are each mainly composed of a thermosetting synthetic resin, the coefficient of linear expansion is approximately 30%. × 10 −6, so that even if the molded body 22 contracts or expands,
3. Since the joint strength material 24 and the strength material 25 contract and expand in synchronization with the molded body 22, the stress does not act much on the molded body 22, and the molded body 22 is not cracked.

【0021】一方、強硬度のコンクリート27は、ほぼ
6.8×10-6〜12.7×10-6程度と線膨張率が小
さいので、このコンクリート27が成形体22の収縮,
膨張を阻害する結果として成形体22に応力が加わって
しまい、成形体22にクラックを発生させることがあ
る。
On the other hand, since the concrete 27 having a high hardness has a small linear expansion coefficient of about 6.8 × 10 −6 to 12.7 × 10 −6 , the concrete 27
As a result of inhibiting the expansion, stress is applied to the molded body 22, which may cause cracks in the molded body 22.

【0022】そこで、本実施の形態ではコンクリート2
7中に、木材28を埋設した。この木材28は縦方向
(垂直方向)の線膨張率は3×10-6〜5×10-6程度
と小さいものの、横方向の線膨張率が36×10-6〜6
0×10-6程度と大きいために、この木材28が横方向
に大きく収縮,膨張する結果としてコンクリート27の
全体に対する収縮,膨張を増大させることができ、コン
クリート27全体の収縮,膨張を成形体22の収縮,膨
張に合せる(揃える)ことができる。このために、成形
体22が熱サイクルを受けても成形体22がコンクリー
ト27からのストレスを受けて、クラックしてしまうお
それがなくなる。また、所定間隔で位置される木材32
については、コンクリート27自体を縦走しているの
で、木材28が設けられることにもとづき発生するコン
クリート27自体のクラックを確実に防止できる。
Therefore, in the present embodiment, the concrete 2
In 7, wood 28 was buried. This wood 28 has a small linear expansion coefficient in the vertical direction (vertical direction) of about 3 × 10 −6 to 5 × 10 −6 , but has a horizontal linear expansion coefficient of 36 × 10 −6 to 6 × 6.
Since it is as large as about 0 × 10 −6 , the wood 28 largely shrinks and expands in the lateral direction, so that the shrinkage and expansion of the concrete 27 as a whole can be increased. 22 can be matched (aligned) to contraction and expansion. For this reason, even if the molded body 22 is subjected to a thermal cycle, there is no possibility that the molded body 22 receives stress from the concrete 27 and cracks. Also, the wood 32 located at a predetermined interval
With regard to (5), since the concrete 27 itself runs longitudinally, cracks in the concrete 27 itself, which occur due to the provision of the wood 28, can be reliably prevented.

【0023】雌型Aが完成すると、図2に示すようにこ
の雌型Aを上向きにして、マスター型として使用する。
すなわち、雌型Aの成形面側に成形肉厚出用のシートワ
ックス34を敷いて、今度はこのシートワックス34の
裏面をマスタ成形表面34aとして用い、このマスタ成
形面34aの上に、雌型Aの成形のときと同様に順次成
形体42,成形層43,接合強度材44,強度材45,
コンクリート47を積層して行く。この場合も、木材4
8がコンクリート47中に埋設されているので、成形体
42の収縮,膨張を吸収できて、成形体42に発生する
クラックを防止できる。
When the female mold A is completed, the female mold A is turned upward as shown in FIG. 2 and used as a master mold.
That is, a sheet wax 34 for thickening the molding is laid on the molding surface side of the female mold A, and the back surface of the sheet wax 34 is used as a master molding surface 34a. As in the case of the molding of A, the molded body 42, the molded layer 43, the joining strength material 44, the strength material 45,
Laminate concrete 47. Also in this case, wood 4
Since the concrete 8 is buried in the concrete 47, the contraction and expansion of the molded body 42 can be absorbed, and cracks generated in the molded body 42 can be prevented.

【0024】しかも、木材48がコンクリート47を縦
走しているので、コンクリート47自体に発生するクラ
ックを防止できる。また、木材28,48、木材32,
52は縦方向にはほとんど収縮,膨張はしないので、コ
ンクリート27,47の本来の機能である成形体の保持
力に影響を与えることがない。
Moreover, since the wood 48 runs vertically on the concrete 47, cracks generated in the concrete 47 itself can be prevented. Also, wood 28, 48, wood 32,
52 hardly shrinks or expands in the vertical direction, so that the original function of the concretes 27 and 47 is not affected.

【0025】以上のようにして雌型Aと雄型Bとを成形
後、実際の使用に際しては被成形製品に相当する成品肉
厚出シートワックス34を除外した状態で、雌型Aと雄
型Bとを射出成形機の図示のラムにセットし、両者を図
2に示すように合せ、両者間で得られる成形空間(成品
肉厚出シートワックス34の在った所)に熱硬化又は冷
却硬化の液状化樹脂を図外のゲートを介してインジェク
ションする。この場合、液状化樹脂が熱硬化性のもので
あるときは、熱伝導体26,46を加熱することにより
成形体22,42が加熱されるので、成品を熱硬化した
後に、製品として取出すことができる。液状化樹脂が冷
却硬化性のものであるときは、熱伝導体26,46を冷
媒で冷却することにより成形体22,42が冷却される
ので、冷却硬化した後に製品として取出せる。
After the female mold A and the male mold B have been formed as described above, the female mold A and the male mold B are removed in actual use with the product thickened sheet wax 34 corresponding to the product to be molded removed. B is set on the illustrated ram of the injection molding machine, and the two are fitted as shown in FIG. 2, and a thermosetting or cooling is performed in a molding space obtained between the two (where the product thickened sheet wax 34 exists). The cured liquefied resin is injected through a gate (not shown). In this case, when the liquefied resin is a thermosetting resin, the molded bodies 22, 42 are heated by heating the heat conductors 26, 46. Can be. When the liquefied resin is a thermosetting resin, the molded bodies 22, 42 are cooled by cooling the heat conductors 26, 46 with a refrigerant, so that they can be taken out as a product after being cooled and hardened.

【0026】本実施の形態では成形体22,42にはア
ルミニウム粉体が混入されているので、成形体22,4
2自体の熱伝導率が良く、熱伝導体26,46の冷熱,
温熱を成形体22,42に良好に伝えることができる。
In the present embodiment, since aluminum powder is mixed in the molded bodies 22 and 42, the molded bodies 22 and 42 are mixed.
2 itself has good thermal conductivity, the heat of the heat conductors 26 and 46,
Warm heat can be transmitted well to the molded bodies 22 and 42.

【0027】また、コンクリート27,47には軽量な
木材28,48、木材32,52が埋設されているの
で、成形型自体の軽量化も図ることができる。
Further, since the lightweight woods 28, 48 and the woods 32, 52 are buried in the concretes 27, 47, the weight of the mold itself can be reduced.

【0028】なお、本実施の形態では、被成形品が電子
部品等の小形の製品で、成形型自体が小形の場合には、
保持材としてコンクリート27,47及び木材28,5
2を省略した簡単なもので構成してもよい。
In this embodiment, when the molded article is a small product such as an electronic component and the molding die itself is small,
Concrete 27, 47 and wood 28, 5 as holding materials
It may be constituted by a simple one in which 2 is omitted.

【0029】これによっても、成形体22,42の線膨
張率に対し、接合強度材24,44、強度材25,45
の線膨張率がほぼ等しく設定され(揃えられ)ているの
で、成形体22,42のクラックを防止できる。
In this manner, the joining strength members 24 and 44 and the strength members 25 and 45 are also reduced with respect to the coefficient of linear expansion of the molded bodies 22 and 42.
Since the linear expansion coefficients are set to be substantially equal (aligned), cracks of the molded bodies 22 and 42 can be prevented.

【0030】[0030]

【発明の効果】以上説明したように、本発明によれば、
保持材の成形体の幅方向の線膨張率を、上記成形体の線
膨張率に揃えるようにしたので、成形体の収縮,膨張が
保持材の収縮,膨張に同調するので、成形体に作用する
応力を小さくでき、成形体のクラックを防止できる。
As described above, according to the present invention,
The linear expansion coefficient of the holding material in the width direction is made equal to the linear expansion coefficient of the molding, so that the contraction and expansion of the molding synchronize with the contraction and expansion of the holding material. Stress can be reduced, and cracks in the molded body can be prevented.

【0031】また、第2の発明によれば、保持材は2液
混合の熱硬化性の合成樹脂より成る強度材から成るの
で、保持材と強度材との線膨張率を的確に揃えることが
できる。
According to the second aspect of the present invention, since the holding material is made of a strength material made of a two-liquid mixed thermosetting synthetic resin, the linear expansion coefficients of the holding material and the strength material can be precisely adjusted. it can.

【0032】また第3の発明によれば、保持材は、コン
クリートから成るので、成形型自体の低コスト化が図れ
る。
According to the third aspect of the present invention, since the holding member is made of concrete, the cost of the mold itself can be reduced.

【0033】また、第4の発明によれば、コンクリート
中に、上記成形体に対し直角方向に延長するとともに、
上記コンクリートの線膨張率よりも大きい線膨張率を有
する棒体を埋設したので、コンクリートの線膨張率を成
形体の線膨張率に合せることができ、成形体のクラック
を簡単な構成で防止できる。
[0033] According to the fourth aspect of the present invention, while extending in a direction perpendicular to the molded body in concrete,
Since the rod having a coefficient of linear expansion greater than the coefficient of linear expansion of the concrete is buried, the coefficient of linear expansion of the concrete can be matched to the coefficient of linear expansion of the molded body, and cracks in the molded body can be prevented with a simple configuration. .

【0034】第5の発明によれば、保持材は、成形体の
裏側に、冷熱又は温熱を伝導する熱伝導体を有するの
で、被成形品を熱硬化又は冷却硬化できる。
According to the fifth aspect of the present invention, since the holding member has a heat conductor that conducts cold or warm heat on the back side of the molded body, the molded article can be thermally cured or cooled and cured.

【0035】第6の発明によれば、強度材の裏側に、コ
ンクリートを一体化して成るので、より低コストの大型
の成形型を得ることができる。
According to the sixth aspect of the present invention, since the concrete is integrally formed on the back side of the strength member, a large-sized mold having lower cost can be obtained.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 この発明の一実施の形態を示す断面図。FIG. 1 is a sectional view showing one embodiment of the present invention.

【図2】 この発明の一実施の形態を示す断面図。FIG. 2 is a sectional view showing an embodiment of the present invention.

【図3】 この発明の他の実施の形態を示す断面図。FIG. 3 is a cross-sectional view showing another embodiment of the present invention.

【図4】 この発明の他の実施の形態を示す断面図。FIG. 4 is a cross-sectional view showing another embodiment of the present invention.

【図5】 従来例の一例を示す断面図。FIG. 5 is a sectional view showing an example of a conventional example.

【符号の説明】[Explanation of symbols]

22,42 成形体 23,43 成形層 23a 成形空間 24,44 接合強度材 26,46 熱伝導体 27,47 強硬度コンクリート 28,32 木材 22, 42 molded body 23, 43 molded layer 23a molding space 24, 44 joining strength material 26, 46 heat conductor 27, 47 hard concrete 28, 32 wood

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 2液混合の熱硬化性の合成樹脂を含む成
形体と、この成形体が成形面側に被着,硬化された保持
材とより成る成形型であって、上記保持材の線膨張率
を、上記成形体の線膨張率に揃えるようにしたことを特
徴とする成形型。
1. A molding die comprising: a molded body containing a two-liquid mixed thermosetting synthetic resin; and a holding material having the molded body adhered to a molding surface and cured. A molding die characterized in that the coefficient of linear expansion is made equal to the coefficient of linear expansion of the molded article.
【請求項2】 保持材は、2液混合の熱硬化性の合成樹
脂より成る強度材から成ることを特徴とする請求項1記
載の成形型。
2. The molding die according to claim 1, wherein the holding member is made of a strength material made of a two-liquid mixed thermosetting synthetic resin.
【請求項3】 保持材は、コンクリートから成ることを
特徴とする請求項1記載の成形型。
3. The molding die according to claim 1, wherein the holding material is made of concrete.
【請求項4】 コンクリート中に、上記成形体に対し直
角方向に延長するとともに、上記コンクリートの線膨張
率よりも大きい線膨張率を有する棒体を埋設したことを
特徴とする請求項3記載の成形型。
4. The rod according to claim 3, wherein a rod extending in a direction perpendicular to the molded body and having a linear expansion coefficient larger than the linear expansion coefficient of the concrete is embedded in the concrete. Mold.
【請求項5】 保持材は、成形体の裏側に、冷熱又は温
熱を伝導する熱伝導体を有することを特徴とする請求項
1記載の成形型。
5. The molding die according to claim 1, wherein the holding member has a heat conductor that conducts cold or warm heat on the back side of the molded body.
【請求項6】 請求項2の強度材の裏側に、請求項3の
コンクリートを一体化して成る請求項1記載の成形型。
6. The molding die according to claim 1, wherein the concrete according to claim 3 is integrated with the back side of the strength member according to claim 2.
JP1699797A 1997-01-30 1997-01-30 Mold Pending JPH10211621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1699797A JPH10211621A (en) 1997-01-30 1997-01-30 Mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1699797A JPH10211621A (en) 1997-01-30 1997-01-30 Mold

Publications (1)

Publication Number Publication Date
JPH10211621A true JPH10211621A (en) 1998-08-11

Family

ID=11931662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1699797A Pending JPH10211621A (en) 1997-01-30 1997-01-30 Mold

Country Status (1)

Country Link
JP (1) JPH10211621A (en)

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