CN201736375U

CN201736375U - Mould with parting surface zero offset

Info

Publication number: CN201736375U
Application number: CN2010202717463U
Authority: CN
Inventors: 邹翠云
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-26
Filing date: 2010-07-26
Publication date: 2011-02-09
Anticipated expiration: 2020-07-26

Abstract

The utility model relates to a mould with parting surface zero offset, which comprises a fixed die and a moving die. The fixed die and the moving die at least comprise a parting surface. Under the condition of keeping the integrated joint part of the parting surface of the fixed die and the moving die with a cavity, the fixed die or/and the moving die are segmented into at least two parts near the joint part which cannot be reached by manual or mechanical die polishing, wherein the two parts with the integrated joint part are connected by a positioning mechanism, and the joint part is in zero offset. The mould has the advantages that the manufacturing cost is low, and the joint part is a zero section.

Description

Mould with zero mismatch of parting surface

Technical field

The utility model relates to a kind of mould with zero mismatch of parting surface.

Background technology

Casing class mould (containing the die casting class) is toy particularly, household electrical appliances, and the automotive-type product is to its size, appearance requirement is more and more higher, and size often requires to be controlled at ± 0.1MM, and the requirement of die joint offset (being step) is harsh especially, because offset can influence outward appearance, safety, feel also has follow-up processing.For example: electroplate plastic cement (alloy die cast) product, oil spout etc. can be amplified offset.Therefore, generally requiring parting line is only as seen not have feel.And existing mold processing, mainly be to rely on machining apparatus such as accurate CNC machining center or accurate electrode EDM to process, generally internal mold part glue position size and position of related features can be controlled at ± 0.02MM, but, product surface needs the light face, when perhaps requiring mirror finish, also needs to take manual polishing, the vestige that is produced with cutter or discharge processing back is removed in polishing.In die manufacture, because of the mold base mismachining tolerance, the electrode mismachining tolerance, the internal mold mismachining tolerance, internal mold is inlayed error, and front and back mould die joint applying error or the like accumulative total causes die joint to exist offset inevitable.

Referring to Fig. 4, Fig. 4 is the planar structure schematic diagram of existing mold.Among Fig. 4, cover half 100 and dynamic model 200 closures, at the die joint 300 of cover half 100 and dynamic model 200, and can there be offset 600 in the joint portion between the die cavity 500 400.Solving now the problem of offset, mainly is to rely on high-precision process equipment, and artificial experience, improves the precision of controlling offset through repairing a die repeatedly, its also can only with break and be controlled at ± 0.03MM in.Also accomplish zero mismatch once in a while, but unstable.And high precision equipment, it costs an arm and a leg, and non-general mould factory can realize, adds the personnel that will have wide experience to operate, and polishing, it becomes manufacturing cost to be multiplied.And general small-scale mould factory owing to there is not high-precision process equipment, adopts repeatedly die trial to repair a die mostly and reduces offset.Promptly by repeatedly repair a die, die trial, until customer satisfaction.Repair a die often, the inevitable time is long, the cost height.Therefore, the die joint offset is the technological difficulties of injection moulding or die casting industry.

The utility model content

Use the problems referred to above in order to restrain, the utility model to society provide a kind of can be in the joint portion that manual or mechanical polishing can't arrive, disposable die joint and the complete joint portion of die cavity the mould that is polished to zero mismatch with fixed half and moving half with zero mismatch of parting surface.

The technical solution of the utility model provides a kind of mould with zero mismatch of parting surface; comprise fixed half and moving half; described fixed half and moving half has a die joint at least; near the joint portion that manual or mechanical polishing can't arrive; under the situation of the complete joint portion of die joint that keeps fixed half and moving half and die cavity; with described cover half or/and dynamic model is divided at least two parts; two parts that wherein have complete joint portion connect by detent mechanism, and described joint portion is a zero mismatch.

In the utility model, above-mentioned detent mechanism is to be provided with projection on the die joint of cover half, is provided with the recess that matches with convex shape in the die joint and the corresponding position of described projection of dynamic model, when dynamic model and cover half closure, described projection is just in time stretched in recess, with both location.Perhaps, described detent mechanism is to be provided with projection on the die joint of dynamic model, is provided with the recess that matches with convex shape in the die joint and the corresponding position of described projection of cover half, when dynamic model and cover half closure, described projection is just in time stretched in recess, with both location.

Die joint in the utility model is meant the plane that dynamic model and cover half can contact when closing with state.And dynamic model or cover half are convenient as molding because of some reason, and are divided into several mold volumes, and these contact-making surfaces between the mold volume of dynamic model or cover half are referred to as divisional plane.

The utlity model has low cost of manufacture, its joint portion is the advantage of zero section.

Description of drawings

Fig. 1 is the decomposition planar structure schematic diagram of a kind of embodiment of the utility model.

Fig. 2 is the planar structure schematic diagram after Fig. 1 makes up.

Fig. 3 is the planar structure schematic diagram of another kind of embodiment.

Fig. 4 is the planar structure schematic diagram of existing mold.

The specific embodiment

See also Fig. 1 to Fig. 3, a kind of mould that the utility model provides with zero mismatch of parting surface, comprise cover half 2 and dynamic model 3, described cover half 2 and dynamic model 3 have a die joint 1 at least, near the joint portion 4 that manual or mechanical polishing can't arrive, under the situation of the die joint 1 that keeps cover half 2 and dynamic model 3 and the complete joint portion 4 of die cavity 5, with described cover half 2 or/and dynamic model 3 is divided at least two parts, two parts that wherein have complete joint portion 4 connect by detent mechanism 31, and described joint portion 4 is zero mismatch.

In the utility model, above-mentioned detent mechanism 31 is to be provided with projection 23 on the die joint of cover half 2, die joint and described protruding 23 corresponding positions at dynamic model 3 are provided with the recess 32 that matches with protruding 23 shapes, when dynamic model 3 and cover half 2 closures, described protruding 23 just in time stretch in recess 32, with both location.

Above-mentioned detent mechanism (not drawing) can also be designed to, on the die joint of dynamic model, be provided with projection, be provided with the recess that matches with convex shape, when dynamic model and cover half closure in the die joint and the corresponding position of described projection of cover half, described projection is just in time stretched in recess, with both location.

Above-mentioned detent mechanism 31 is not the detent mechanism that is used for limiting among the present invention just for example, and in fact, mode that the detent mechanism 31 among the present invention can also adopt that pressing plate compresses etc. realizes both location.

The above-mentioned mould with zero mismatch of parting surface can be realized with following method, referring to Fig. 1 and Fig. 2, it is in cover half 2 that has a die joint 1 at least and dynamic model 3, near the joint portion 4 that manual or mechanical polishing can't arrive, under the situation of the complete joint portion 4 of die joint that keeps cover half 2 and dynamic model 3 and die cavity 5, with 2 two parts of described cover half, be fraction 21 and most of 22, wherein fraction 21 is locked into one by detent mechanism 31 with dynamic model 3, after removing most of 22, can be very easily to joint portion 4 by hand or mechanical mode carry out polishing, reach zero mismatch until joint portion 4.In the present embodiment, described polishing is the process of the joint portion being polished with mechanical or manual.

In the utility model, described detent mechanism 31 is to be provided with projection 23 on the die joint of the fraction 21 of cover half 2, die joint and described protruding 23 corresponding positions at dynamic model 3 are provided with the recess 32 that matches with protruding 23 shapes, projection 23 in the present embodiment be shaped as truncated rectangular pyramids, obviously, described protruding 23 also can be other shape, as garden platform shape, column shape etc., so long as with after projection 23 and recess 32 cooperations, can play can with fraction 21 and dynamic model 3 positioning instants; When dynamic model 3 and cover half 2 closures, described protruding 23 just in time stretch in recess 32, with both location, with screw rod 6 cover half 2 and dynamic model 3 are locked again.Perhaps, described detent mechanism 31 also can be designed to, on the die joint of dynamic model 3, be provided with projection, die joint and the corresponding position of described projection at cover half 2 are provided with the recess that matches with convex shape, when dynamic model and cover half closure, described projection is just in time stretched in recess, with both location, with screw rod fixed half and moving half is locked again.After 2 lockings of dynamic model 3 and cover half, 4 carry out polishing in the joint portion again, because dynamic model 3 and cover half 2 relative fixed just can realize that its joint portion 4 is polished to zero mismatch.And, because cover half 2 has only fraction 21 and dynamic model 3 relative fixed when polishing, like this, help people with the naked eye or feel detect the offset situation of joint portion 4.Save the tired brain that original repeatedly die trial repairs a die, greatly reduce the molding cost.

Obviously, in the utility model, also can be that dynamic model 3 is divided into two parts, one of them part is locked mutually with cover half, can also be simultaneously dynamic model and cover half to be divided into two respectively, with the part of its cover half and the part locking of dynamic model.That is to say, core of the present utility model is near the joint portion 4 that will can't arrive in manual or mechanical polishing, under the situation of the complete joint portion 4 of die joint that keeps cover half 2 and dynamic model 3 and die cavity 5, with cover half 2 or/and dynamic model 3 is divided at least two parts, with wherein having the part locking of common joint portion, in order to polishing.Therefore, though in the present embodiment, just cover half has been divided into two parts as required, but, in fact, no matter be cover half, still dynamic model all can be divided into greater than two parts, mainly decides on the structure of mould, so long as be convenient for people to polishing and check that mould offset situation is just passable.

See also Fig. 3, embodiment illustrated in fig. 3 and embodiment illustrated in fig. 2 comparing, roughly situation is identical for it, different is makes things convenient for polishing for another joint portion 7 at die cavity 5 rear portions, also dynamic model 3 has been told a fraction in the present embodiment, be cover half fraction 33, cover half fraction 33 and dynamic model 3 are locked by another screw rod 8.After removing cover half major part 22, just can be easily to another joint portion 7 polishings.

Mandatory declaration be: fixed half and moving half must just can normally use screw rod 6 and screw rod 8 removals in use, with both locking, only limits in polishing and uses when checking mould.

The utility model adopts after dynamic model and cover half closure; near the joint portion that manual or mechanical polishing can't arrive; under the situation of the complete joint portion of die joint that keeps fixed half and moving half and die cavity; with described cover half or/and dynamic model is divided at least two parts; two parts that will wherein have complete joint portion again are to connect by detent mechanism; carry out the method for polishing again; so just can not need repeatedly die trial; repair a die and just can reach the purpose that offset closes the symbol requirement; in addition; this method can also make things convenient for the direct naked eyes of mould offset to detect, and perhaps feel detects.

Claims

1. mould with zero mismatch of parting surface; comprise fixed half and moving half; it is characterized in that: described fixed half and moving half has a die joint at least; near the joint portion that manual or mechanical polishing can't arrive; under the situation of the complete joint portion of die joint that keeps fixed half and moving half and die cavity; or/and dynamic model is divided at least two parts, two parts that wherein have complete joint portion connect by detent mechanism with described cover half, and described joint portion is a zero mismatch.

2. according to the described mould of claim 1 with zero mismatch of parting surface, it is characterized in that: described detent mechanism is to be provided with projection on the die joint of cover half, die joint and the corresponding position of described projection at dynamic model are provided with the recess that matches with convex shape, when dynamic model and cover half closure, described projection is just in time stretched in recess, with both location.

3. according to the described mould of claim 1 with zero mismatch of parting surface, it is characterized in that: described detent mechanism is to be provided with projection on the die joint of dynamic model, die joint and the corresponding position of described projection at cover half are provided with the recess that matches with convex shape, when dynamic model and cover half closure, described projection is just in time stretched in recess, with both location.