CN86200930U

CN86200930U - Sectional permanent casting mould

Info

Publication number: CN86200930U
Application number: CN 86200930
Authority: CN
Inventors: 向公权; 向劲柏; 向荣藻
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-02-06
Filing date: 1986-02-06
Publication date: 1987-08-19

Abstract

The utility model discloses a sectional permanent casting mould which is used for producing all kinds of metal castings; the casting mould is divided into a plurality of minor segments; the casting mould of each minor segment which is manufactured by the graphite or the metal, and the minor segments are totally connected with an iron frame, and connecting components, such as; a screw, etc. The moulding materials (such as; the molding sand, etc.) can be filled between the casting mould and the iron frame; the point which is easy to be damaged in the casting mould can be additionally inserted with a graphite small block for being favorable to replace. In addition, one casting mould is the mould cavity of the moulding materials (such as the molding sand, etc.) made of the wood mould, and the casting mould is provided with the graphite or the metal mould edge at the parting surface point to act the protective function. The utility model which is easy to be manufactured and maintained has the advantages of simple structure, low cost, and convenient generalization, and the sectional permanent casting mould can not only produce the black metal castings, but also can produce the non-ferrous castings.

Description

Segmentation combination permanent mo(u)ld

Segmentation combination permanent mo(u)ld of the present utility model is ferrous castings such as gray iron casting, nodular iron casting, malleable iron spare, alloy-steel casting spare and the various steel part that is used to produce in enormous quantities or small batch, also can be used for producing non-ferrous casting such as copper-alloy casting, aluminium alloy castings and the Zinc alloy casting of in enormous quantities or small batch.

In the prior art, general popular casting method is that the hand moulding or the advanced mechanization moulding that fall behind all are to adopt the sand mo(u)ld of a mould one casting, and sand casting not only influences casting quality, and complex process, and production efficiency is low.In order to solve the problem that sand casting brings, the cast iron permanent mould at home and abroad occurs in succession.At home and abroad generally cylinder iron the also useful punching block of permanent mould produce non-ferrous casting, but manufacture technology complexity, cost height.Cylinder iron permanent mould is produced the ferrous metal aspect, at home, except that cookers such as skillet are used old method mud mould as the permanent mo(u)ld, also make cylinder iron the permanent mould, also do not make cylinder iron permanent mould produce various ferrous castings in a large number except that produce some tubing foundry goods in fields such as centrifugal casting and continuous pipe-castings.Abroad,, all be in the development stage, do not have a large amount of the operation though existing cylinder iron permanent mould is produced ferrous castings.One piece of article that the assorted Chi of U.S.'s casting " modern casting " delivered in 1984.2 months is pointed out: " the cast iron permanent mould is used for the cast ferrous metal foundry goods and has many advantages that founder author dreams of; ... because the cast iron permanent mould is difficult for making; cost is high and the life-span is not long, so can't promote.

It is low and the life-span is long that the purpose of this utility model designs a kind of cost exactly, not only can produce non-ferrous casting, and can produce ferrous castings, segmentation combination permanent mo(u)ld easy to utilize.

Segmentation of the present utility model combination permanent mo(u)ld is formed by metal or graphite casting mould or with the Modeling Material casting mold (1) of wooden model system, chase (3), connector (2) etc.The principle of repairing according to Yi Zhiyi, casting mold (1) is broken the whole up into parts, be about to casting mold (1) and be divided into many segments, the length of every segment is decided to be easy to make this section metal or graphite casting mould or wooden model, simultaneously according to the shape of foundry goods, and both sides that casting mold (1) is outside or polygonly be furnished with chase (3) mutually, and every section casting mold is fixed on the chase (3) with connector (2), as shown in Figure 5, the connector bottom is with graphite plug or Modeling Material (7) sealing, in case casting of molten metal flows into wherein.Chase (3) is to be welded by several block plates, should planish in its mould assembly face place, and each face of chase (3) is drilled with many holes, and decide on the shape of foundry goods its size and position.

The segmentation casting mold is easily to repair for easy more system, dwindles the volume of casting mold as far as possible, has not only saved material, and has reduced processing capacity.The casting mold that will dwindle is installed on the chase (3) with connecting piece (2), insert between casting mold (1) and the chase (3) with Modeling Material (as molding sand) (4), and it is tight to give Chinese toon.At this moment, casting mold (1) only needs its die cavity of processing and other joining several, and remaining face will not be processed, shown in Fig. 3,4.

For producing hundreds of kilogram or more great foundry goods, if with metal mold or graphite casting mould, even segmentation, the casting mold volume is still very big, so its cost is inevitable expensive, and service life is not long yet, simultaneously, need use lower cooling velocity for some casting mold, to guarantee that foundry goods cools off in proper order, thereby eliminate defects such as shrinkage cavity shrinkage porosity, this moment the available Modeling Material casting mold of making of wooden model, as Fig. 6, shown in Figure 7.Make die cavity with wooden model and Modeling Material (as molding sand) etc., and protected with metal or graphite mo(u)ld limit (8), die cavity (9) is not damaged when die sinking,, also be easy to change even damage at the die joint place.The fixation on mould limit also as shown in Figure 5.

Another characteristics of the present utility model are that when the segmentation casting mold, some is easy to damage part and studs with the graphite fritter again in addition, if fritter sustains damage in the production, can only change the graphite fritter and need not change casting mold, not only reduce the cost of repairs of permanent mo(u)ld, and prolonged its service life.The fixation of graphite fritter also as shown in Figure 5.

Permanent mo(u)ld of the present utility model needs with should being installed on the vertical pouring machine of vertical pouring, when needing down core, should make the hole that the core hook is laid, and makes core have the place to support as shown in Figure 8.Should be contained on the horizontal casting machine during horizontal cast.

Permanent mo(u)ld of the present utility model is compared small investment with the state-of-the-art mechanization sand casting process of prior art in order to produce ferrous castings, can lack 70-90%, last detective, fast approximately 70%-90% approximately, percent defective is low, can hang down 30%-50%, the internal quality of casting is good, organizes finer and closely woven, physical property is much improved, the surface smoothness height of foundry goods, and technology is simple, the production efficiency height.Produce non-ferrous casting with cast iron permanent mould of the prior art or punching block and compare, cost is low, and is low approximately by 50%, and small investment is lacked 30%-50% approximately, and last detective is fast approximately 50%, and easy system is easily repaiied long service life.Therefore the utility model is easy to utilize in ferrous castings and non-ferrous casting and the steel part of producing different shape size, large, medium and small batch.

Description of drawings:

Fig. 1 is the A-A cutaway view at die joint place among Fig. 2, expression 165F nodular graphite cast iron crankshaft of diesel engine segmentation casting mold schematic diagram.Among the figure casting mold (1) is divided into seven sections, the I section is a cast gate, and II-VII section is whole bent axle die cavity, and the sealing block on VII pars infrasegmentalis and the casting machine links.Every section casting mold connects with chase (3) with bolt (2).Otherwise the die cavity that processes whole bent axle on block of metal or graphite is difficult.

Fig. 3, Fig. 4 are the schematic diagram that is installed on after the casting mold among Fig. 1, Fig. 2 dwindles on the chase.Fig. 3 is the A-A section of Fig. 4, with the casting mold among Fig. 1 (1) volume-diminished, fill out, and it is tight to give Chinese toon with Modeling Material (4), thus fixing casting mold (1).

Fig. 5 is the B-B profile among Fig. 3, the expression casting mold (1) and the schematic diagram that connects of chase (3).With screw (2) casting mold (1) is connected with chase (3), pad is with thick washer or pad (6) between casting mold (1) and chase (3), and fastening with nut (5), graphite plug or Modeling Material (7) are housed with the screw hole sealing, in case casting of metals liquid flows at the afterbody of screw (2).

Fig. 6, Fig. 7 represent the casting mold schematic diagram made of wooden model and Modeling Material (4).Fig. 6 is the A-A section of Fig. 7.(9) die cavity for making of wooden model and Modeling Material (4) is equipped with metal or graphite mo(u)ld limit (8) at the die cavity edge of splitting plane, and mould limit (8) and die cavity (9) part that contacts is approximately the 2-5 millimeter, thereby protects die cavity not to be damaged when die sinking.

When Fig. 8 is vertical pouring, the placement schematic diagram of buckle core in casting mold.(11) buckle core, (1A) left casting mold, (12) die joint, (1B) right casting mold, (3B) right chase, (4) Modeling Material, (9) die cavity, (10) venthole, (3A) left chase.

Embodiment 1

With casting 165F nodular graphite cast iron crankshaft of diesel engine is example.Casting mold is divided into seven sections, the I section is a cast gate, II-VII section is the bent axle die cavity, the VII pars infrasegmentalis links to each other with sealing plate on the casting machine, and each section casting mold is made with graphite block, and fixes with screw and chase, pad is with thick washer or pad between casting mold and chase, insert Modeling Material (as molding sand), and it is tight to give Chinese toon, the afterbody of screw is with graphite plug or Modeling Material sealing.Be coated with universal lacquer in die cavity inside then, dry, can go into operation.

Embodiment 2:

Make the method for die cavity with wooden model and Modeling Material: make two graphite mo(u)ld limits or metal pattern limit by the shape of wooden model die joint earlier, the fixation on mould limit is identical with the casting mold fixation of last example, after the mould limit fixes, is about to wooden model and is stuck in wherein, insert Modeling Material (as molding sand etc.), and it is tight to give Chinese toon.Take out wooden model then, be coated with on die cavity with universal lacquer, oven dry can be gone into operation.

Claims

1, is used to produce the segmentation combination permanent mo(u)ld of various metal castings, it consists of metal or graphite casting mould or with Modeling Material casting mold (1), chase (3), the connector (2) of wooden model system, it is characterized in that casting mold (1) is split into some segments, every segment is connected with casting mold both sides or the polygon chase that matches (3) by connector (2), chase has some holes on (3), and connector (2) bottom is by graphite plug or Modeling Material (7) sealing.

2,, it is characterized in that between casting mold (1) and chase (3), being filled with Modeling Material (4) according to the permanent mo(u)ld of claim 1.

3,, it is characterized in that graphite mo(u)ld limit or metal pattern limit (8) being housed with the die joint place of the Modeling Material casting mold (1) of wooden model system according to the permanent mo(u)ld of claim 1.

4,, it is characterized in that being easy to damage part at casting mold (1) studs with the graphite fritter in addition according to the permanent mo(u)ld of claim 1 or 2 or 3.

5,, it is characterized in that casting mold (1) has the hole of placing core hook (11) according to the permanent mo(u)ld of claim 4.