JPH0322807B2 - - Google Patents
Info
- Publication number
- JPH0322807B2 JPH0322807B2 JP60067200A JP6720085A JPH0322807B2 JP H0322807 B2 JPH0322807 B2 JP H0322807B2 JP 60067200 A JP60067200 A JP 60067200A JP 6720085 A JP6720085 A JP 6720085A JP H0322807 B2 JPH0322807 B2 JP H0322807B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- bottom plate
- plate
- side plates
- cavity
- 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 - Lifetime
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は例えばプラスチツクの射出成形等に用
いられる組合せ金型の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a combination mold used, for example, in injection molding of plastics.
従来、プラスチツク等の射出成形用金型の製作
においては、キヤビテイを、切削により抜き勾配
をつけて形成するか、あるいは抜き勾配がついた
キヤビテイが形成されるように複数の型板（型部
材）を組合せ、これら型板の所定の合せ目をろう
付けにより接合固着するかしている。
Conventionally, in the production of molds for injection molding of plastic, etc., cavities are formed by cutting with a draft angle, or multiple template plates (mold members) are used to form a cavity with a draft angle. The predetermined seams of these templates are joined and fixed by brazing.
ところが、上述の金型の切削においては、キヤ
ビテイのコーナー部をシヤープな形状に形成する
ことが困難であり、また上述の型板のろう付けに
より金型のキヤビテイを形成する手段において
は、ろう付け部の接合固着強度が不十分となり易
く、このため広い接合面積を要し、この結果金型
が大型となる欠点があつた。
However, in the above-mentioned cutting of the mold, it is difficult to form the corner part of the cavity into a sharp shape, and in the above-mentioned means of forming the mold cavity by brazing the template, it is difficult to form the cavity in the mold by brazing. The joint fixation strength of the parts tends to be insufficient, and therefore a large joint area is required, resulting in a large mold.
本発明は従来のものがもつ以上のような問題点
を解決した組合せ金型の製造方法を提供すること
を目的とする。 An object of the present invention is to provide a method for manufacturing a combination mold that solves the above-mentioned problems of conventional molds.
本発明は前記目的を達成するために次のような
構成としている。すなわち、金型の底部を構成す
る底板と、金型の側壁を構成する複数の側板とを
組み合わせて金型を製造する方法において、上記
底板及び側板の少なくとも一方を焼結合金より構
成し、上記底板の縁部に側板を突き合わせて仮結
合し、これを加熱して接合面を焼結させて上記底
板と上記側板とを固着させるようにしたものであ
る。
In order to achieve the above object, the present invention has the following configuration. That is, in a method of manufacturing a mold by combining a bottom plate constituting the bottom of the mold and a plurality of side plates constituting the side walls of the mold, at least one of the bottom plate and the side plates is made of a sintered alloy, and the above-mentioned The side plates are butted against the edges of the bottom plate for temporary bonding, and the bonded surfaces are sintered by heating, thereby fixing the bottom plate and the side plates.
以下、本発明の一実施例を第１図乃至第８図に
基づいて説明する。第１図及び第２図中１はキヤ
ビテイ２を有するプラスチツクの射出成形用の金
型であり、第３図及び第４図に示す２枚の側板
（型部材）３，３と、第５図及び第６図に示す２
枚の側板（型部材）４，４と、第７図及び第８図
に示す底板（型部材）５とからなつている。キヤ
ビテイ２は４周面にそれぞれ3゜の抜き勾配を有し
ている。
Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 8. Reference numeral 1 in FIGS. 1 and 2 is a plastic injection mold having a cavity 2, and two side plates (mold members) 3, 3 shown in FIGS. 3 and 4, and FIG. and 2 shown in Figure 6.
It consists of side plates (mold members) 4, 4 and a bottom plate (mold member) 5 shown in FIGS. 7 and 8. The cavity 2 has a draft angle of 3° on each of its four circumferential surfaces.
側板３，４、底板５はいずれもＣ：1.7％、
Cr：13％、Mo：1.5％、Nb：１％、Ｖ：0.5％、
Ｐ：0.5％、Fe及び不可避不純物：残部よりなる
焼結合金製の長方形板である。なお、側板３，４
には第４図、第６図に示すようにキヤビテイ側の
面６，７にそれぞれ所定角度の勾配がつけられて
いる（Ｓ＝3゜）。これら側板３，４底板５の所定
箇所には、これらを箱形に組合せるためのピン穴
８が形成されている。 Side plates 3, 4 and bottom plate 5 are all C: 1.7%,
Cr: 13%, Mo: 1.5%, Nb: 1%, V: 0.5%,
It is a rectangular plate made of sintered alloy consisting of P: 0.5%, Fe and inevitable impurities: the balance. In addition, side plates 3, 4
As shown in FIGS. 4 and 6, the cavity-side surfaces 6 and 7 are each sloped at a predetermined angle (S=3°). Pin holes 8 for assembling these side plates 3 and 4 into a box shape are formed at predetermined locations on the side plates 3 and 4 and the bottom plate 5.
２枚の側板３，４は、それぞれの面６，７を内
側に位置させられ、かつピン穴８に嵌合されたピ
ン（図示せず）により枠形に組合せられ、さらに
底板５上に載置され、ピン穴８に嵌合されたピン
（図示せず）により箱形（型構成体）に組合せら
れている。 The two side plates 3 and 4 are assembled into a frame shape by a pin (not shown) fitted into a pin hole 8 with their respective surfaces 6 and 7 located inside, and further placed on the bottom plate 5. and are combined into a box shape (mold structure) by pins (not shown) fitted into pin holes 8.
この後、この箱形に組合せられた金型は
0.1torrの真空中1150℃に高温加熱され、これに
より前記側板３，４、底板５の合せ目（互いの接
触面）が接合固着される。この接合固着は、焼結
合金の粒子間に十分な原子的結合が生じるので強
固なものとなる。このように合せ目が接合固着さ
れた金型は、仕上げ加工され、射出成形用金型と
して提供される。なお、この高温加熱された金型
はその冷却過程において同時に焼入れ等の熱処理
ができる。 After this, the molds combined into this box shape are
It is heated to a high temperature of 1150° C. in a vacuum of 0.1 torr, thereby bonding and fixing the seams (the contact surfaces between them) of the side plates 3, 4 and the bottom plate 5. This bonding is strong because sufficient atomic bonds are formed between the particles of the sintered alloy. The mold in which the seams are bonded and fixed in this way is finished and provided as an injection mold. Note that this mold heated to a high temperature can be subjected to heat treatment such as hardening at the same time during the cooling process.
以上のようにして製作された金型の接合固着部
は、超音波探傷法によつて調べたところ、隙間等
の欠陥は認められず、この金型の接合部の接合強
度は十分であり、寸法精度も満足し得、製造コス
トは従来の切削による製造コストの約1/2に減少
した。 When the bonded and fixed portion of the mold manufactured as described above was examined by ultrasonic flaw detection, no defects such as gaps were found, and the bonding strength of the bonded portion of this mold was sufficient. The dimensional accuracy was also satisfactory, and the manufacturing cost was reduced to approximately 1/2 of the manufacturing cost using conventional cutting.
なお、前記実施例においては、側板３，４、底
板５を焼結合金からなるものとしたが、これに限
られることなく、側板３，４と底板５の少なくと
も一方が焼結合金であれば、加熱により接合面が
再焼結状態となり、底板５と側板３，４が固着さ
れる。 In the above embodiment, the side plates 3, 4 and the bottom plate 5 are made of a sintered alloy, but the invention is not limited to this, and as long as at least one of the side plates 3, 4 and the bottom plate 5 is made of a sintered alloy. By heating, the joint surfaces become re-sintered, and the bottom plate 5 and the side plates 3 and 4 are fixed.
本発明によれば、少なくとも一方が焼結合金よ
りなる底板及び側板を突き合わせて仮結合し、こ
れを加熱して接合面を焼結させて上記底板と上記
側板とを固着させるようにしたので、製造工程が
簡単になるとともに、キヤビテイのコーナー部を
シヤープな形状に形成することが可能となり、し
かも型部材の接合箇所を特に広い面積を要さず強
固に接合固着することができ、その強度が十分と
なり、金型が大形化するのを防止することができ
る。
According to the present invention, the bottom plate and the side plate, at least one of which is made of a sintered alloy, are butted against each other and temporarily bonded, and the bottom plate and the side plate are fixed by heating and sintering the bonded surfaces. In addition to simplifying the manufacturing process, it is now possible to form the corners of the cavity into a sharp shape, and the joints of mold members can be firmly joined and fixed without requiring a particularly large area, and their strength is increased. This makes it possible to prevent the mold from increasing in size.
第１図乃至第８図は本発明の一実施例を示すも
ので、第１図は金型構成体の平面図、第２図は金
型構成体の正面図、第３図は一方の側板の正面
図、第４図は一方の側板の側面図、第５図は他方
の側板の正面図、第６図は他方の側板の側面図、
第７図は底板の正面図、第８図は底板の側面図で
ある。
１……金型、２……キヤビテイ、３，４……側
板（型部材）、５……底板（型部材）。
Figures 1 to 8 show one embodiment of the present invention, in which Figure 1 is a plan view of the mold assembly, Figure 2 is a front view of the mold assembly, and Figure 3 is one side plate. 4 is a side view of one side plate, FIG. 5 is a front view of the other side plate, FIG. 6 is a side view of the other side plate,
FIG. 7 is a front view of the bottom plate, and FIG. 8 is a side view of the bottom plate. 1... Mold, 2... Cavity, 3, 4... Side plate (mold member), 5... Bottom plate (mold member).
Claims (1)
構成する複数の側板とを組み合わせて金型を製造
する方法において、上記底板及び側板の少なくと
も一方を焼結合金より構成し、上記底板の縁部に
側板を突き合わせて仮結合し、これを加熱して接
合面を焼結させて上記底板と上記側板とを固着さ
せることを特徴とする組合せ金型の製造方法。1. A method for manufacturing a mold by combining a bottom plate constituting the bottom of the mold and a plurality of side plates constituting the side walls of the mold, wherein at least one of the bottom plate and the side plates is made of a sintered alloy, and the bottom plate A method for manufacturing a combination mold, characterized in that the bottom plate and the side plate are fixed together by abutting a side plate against an edge of the base plate and temporarily bonding the base plate and heating the side plate to sinter the joint surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6720085A JPS61227005A (en) | 1985-03-30 | 1985-03-30 | Sectional mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6720085A JPS61227005A (en) | 1985-03-30 | 1985-03-30 | Sectional mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61227005A JPS61227005A (en) | 1986-10-09 |
| JPH0322807B2 true JPH0322807B2 (en) | 1991-03-27 |
Family
ID=13338023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6720085A Granted JPS61227005A (en) | 1985-03-30 | 1985-03-30 | Sectional mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61227005A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110900020A (en) * | 2019-11-26 | 2020-03-24 | 宝鸡中车时代工程机械有限公司 | Anti-deformation welding process for large-length box-shaped structural member |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5145626A (en) * | 1974-10-18 | 1976-04-19 | Nippon Electro Plating | CHOJAKUZAINORENZOKUBUBUNMETSUKIHOHOTO SONOSOCHI |
-
1985
- 1985-03-30 JP JP6720085A patent/JPS61227005A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61227005A (en) | 1986-10-09 |
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