CN204585765U - A kind of inside has the mould in conformal water route - Google Patents

Abstract

The utility model discloses the mould that a kind of inside has conformal water route, comprise die and die cavity, it is inner that described conformal water route is positioned at described die, comprise main water route and auxiliary water route, it is peripheral that described main water route is uniformly distributed in described die cavity, and the vertical range to the inwall of described die cavity is consistent, for absorbing the heat from described die cavity; Described auxiliary water route is distributed in the periphery in described main water route, for the heat from described main water route being delivered to the space of mould periphery; The water inlet in described conformal water route and delivery port lay respectively at the port in the described auxiliary water route being distributed in described die cavity both sides.

Description

A kind of inside has the mould in conformal water route

Technical field

The utility model relates to mould and manufacture craft field thereof, particularly relates to the mould that a kind of inside has conformal water route.

Background technology

Usually, need on mould, to make water route for heating mould or cooling, and keep the constant of mold temperature, but due to the limitation of traditional manufacturing technique, got through the water route of formation by boring, its track can only be generally straight line or plane, and curved surface or other complicated shape then cannot be processed.Along with the homogeneity day by day of 3C electronic product, increasing producer is in order to realize the differentiation of product, make the shape/manufacture craft of product day by day complicated, product constantly to lightening, curving development, thus it is also proposed higher requirement to mould and moulding process.

The cooling of existing water route, when the product such as thin-walled, large curved surface, because cooling water channel is all in the same plane, water route is not quite similar to the distance of curved surface and causes inhomogeneous cooling, there is internal stress and cause product warpage/distortion, especially thin-wall product, the defect of distortion and warpage is then more obvious, produces bring larger difficulty to the making of product.For these problems, traditional solution has two kinds:

Method 1: adjustment moulding process, equipment, such as, use high speed injection motding equipment, utilize high speed and high pressure by melt Fast Filling time shaping;

Method 2: utilize special method to make conformal water route, as Selective Laser Sintering.

But these two kinds of methods all have some limitations.Method 1 adopts high speed injection motding equipment, and needing increases investment and production cost, and also has that interiors of products residual stress is large, the problem of the easy buckling deformation of product; And method 2 cost of manufacture is very high, and technology is mostly and abroad monopolizes.

Utility model content

Main purpose of the present utility model is to propose the mould that a kind of inside has conformal water route, cannot flexible adaptation shape of product with the cooling water channel structure solving existing mold, water route cannot carry out Homogeneous cooling to product and cause product buckling deformation, residual stress is large, cool time is long and short problem of penetrating.

A kind of inside has the mould in conformal water route, comprise die and die cavity, it is inner that described conformal water route is positioned at described die, comprise main water route and auxiliary water route, it is peripheral that described main water route is uniformly distributed in described die cavity, and the vertical range to the inwall of described die cavity is consistent, for absorbing the heat from described die cavity; Described auxiliary water route is distributed in the periphery in described main water route, for the heat from described main water route being delivered to the space of mould periphery; The water inlet in described conformal water route and delivery port lay respectively at the port in the described auxiliary water route being distributed in described die cavity both sides.The inside that this programme provides has the mould in conformal water route, when and the product of thin-walled comparatively complicated for forming shape structure, different conformal water routes can be designed according to the change in shape of die cavity, with ensure water route everywhere distance die cavity vertical range be all equal, avoid cooling velocity that is that cause the is fast or partially slow problem because some curved portion distance cooling water channel is partially near or remote, thus ensure that product each position cooling velocity is consistent, cooling evenly, forms good outward appearance.

Accompanying drawing explanation

Fig. 1 is the sectional view that inside has the die in conformal water route;

Fig. 2 is the schematic diagram of upper cores;

Fig. 3 is the schematic diagram of lower die;

Fig. 4 is the schematic diagram of lower die assistant formation tool;

Fig. 5 is the schematic diagram of conformal water route model;

Fig. 6 is the schematic diagram of the lower die model that placed conformal water route model;

Fig. 7 be compressing after inside there is the exploded perspective view of the die model of conformal water route model;

Fig. 8 is a kind of sectional view of die of the mould for making large curved surface thin-wall product.

Detailed description of the invention

Below in conjunction with accompanying drawing with preferred embodiment the utility model is described in further detail.

Detailed description of the invention of the present utility model provides a kind of inside to have the mould in conformal water route, comprise die and die cavity, as illustrated in figures 1 and 8, it is inner that described conformal water route 10 is positioned at described die, comprise main water route and auxiliary water route, with reference to figure 8, it is peripheral that described main water route 11 is uniformly distributed in die cavity 40, and the vertical range to the inwall of die cavity 40 is consistent, be mainly used in absorbing the heat from die cavity 40; Described auxiliary water route 12 is distributed in the periphery in main water route 11, and the heat in the future autonomous water route 11 is delivered to the space of mould periphery; The water inlet in conformal water route 10 and delivery port lay respectively at the port in the auxiliary water route being distributed in die cavity 40 both sides.As shown in Figure 8, one preferred embodiment in, auxiliary water route 12 is distributed in the both sides of die cavity 40 symmetrically.Water inlet and water outlet are screw thread, are connected with outer water tube by screw thread.

The above-mentioned mould that the utility model detailed description of the invention provides, its die can make by the following method: according to computer 3D model, with conformal water route 10, for boundary, (in Fig. 1 and Fig. 8, namely dotted line represents boundary, the not gap of the inner necessary being of die) die is divided into the lower die 30 shown in the upper cores 20 shown in Fig. 2 and Fig. 3, as shown in figures 1 and 3, lower die 30 has the water route track 31 mated with conformal water route 10, also can have the water route track 21 mated with the first half in conformal water route 10 and the latter half respectively in upper cores 20 and lower die 30 simultaneously, 31.After division completes, according to computer 3D model, separately make upper cores model, lower die model and conformal water route model, comprise the following steps:

S1, the lower die assistant formation tool of making; Make the conformal water route model of resin material.In a kind of specific embodiment, lower die assistant formation tool adopts flexible metal by CNC (Digit Control Machine Tool), be made according to the shape of upper cores and the shape in conformal water route, flexible metal herein can be such as aluminum metal, aluminium alloy or kirsite etc., as shown in Figure 4, described lower die assistant formation tool 50 comprises first pressing component 51 with the first shape and second pressing component 52 with the second shape, wherein the first shape is consistent with upper cores 20 shape, and the second shape is consistent with conformal water route 10 shape.In a kind of specific embodiment, conformal water route model can make in the following way: resin hollow pipe or the solid pole of resin are heated to above resin softening point 5 ~ 25 DEG C, then according to the computer 3D model in conformal water route, auxiliary fixture is adopted to bend out the required form meeting size, then to lower the temperature sizing, thus the conformal water route model 60 formed as shown in Figure 5, wherein, resin can adopt PP, PE, PA and/or acrylic.

S2, the powder for molding getting the first consumption to be poured in forming tank and are pressed with described lower die assistant formation tool 50, and to suppress lower die model, and described lower die model has described water route track 31, wherein, described powder for molding comprises metal dust.Utilize metal dust compact technique, the metal dust for die under making is filled in forming tank, its consumption should be the lower die that just can be pressed into required size and shape, volume can be read according to the computer 3D model of lower die 30, then the quality (i.e. described first consumption) of required metal dust of filling can be calculated by the density that volume is multiplied by metal dust; Then press powder a period of time with lower die assistant formation tool 50, suppress lower die model (can reference diagram 3).In the mode be more preferably, in order to viscosity time compressing between metal dust better, more easily shaping, appropriate adhesive powder (mass percent accounting for total powder consumption is 0 ~ 10%) can be added.Binding agent is the organic binder bond that forming field is commonly used.Metal dust used herein can be such as the mixed-powder of one or more in powder of stainless steel, titanium alloy powder and Al alloy powder.

S3, the conformal water route model 60 made in advance is placed on the water route track 31 of the lower die model suppressed, forms the state shown in Fig. 6.

S4, continuation pour the described powder for molding of the second consumption into cover described lower die model and described conformal water route model 60 in described forming tank, and press described powder for molding, to suppress upper cores model, thus, the inner die model with described conformal water route model 60 is formed in described forming tank, see the exploded perspective view that Fig. 7, Fig. 7 are this die model.

S5, to step S4 formed described die model carry out sintering degreasing, be integrated to make described lower die model and described upper cores models coupling, remove described conformal water route model 60 simultaneously, form the inner die with described conformal water route, this die makes upper and lower die one-body molded, the conformal water route model of resin is sintered after degreasing removes, and die inside just forms required conformal water route.

In the embodiment be more preferably, on the basis of the die formed after sintering degreasing through step S5, carry out roughing, surface enhanced process, fine finishining successively, to obtain the accurate die of size and dimension: such as by modes such as polishing, cleaning, CNC processing, make die size more close to designing requirement; Due in some embodiments, organic binder bond powder is added in the powder for molding of step S2 and S4, after step S5 sinters degreasing, the organic binder bond composition in die is removed, and leaves micropore, therefore effects on surface is needed to carry out nitriding, Carburization Treatment, to strengthen intensity and hardness, meanwhile, leave surplus also to follow-up fine finishining, fine finishining can adopt High Precision CNC to process, and bores the screwed hole of water route standard afterwards again.

By the die that aforesaid method is produced, the conformal water route of its inside can be designed according to product, the shape in water route can design with the shape of die cavity, such as when die cavity is spherical, then can produce the conformal water route being uniformly distributed in spherical die cavity periphery, and the track in water route is spherical in shape, and vertical range between water route and die cavity inner surface is almost isometric, ensure that cooling uniformity.And for example, when product is the thin-wall product with edge cambered surface, it is such as the product of little curved surface, can reference diagram 1, its conformal water route 10 is evenly distributed in die cavity periphery according to the shape of die cavity 40, track presents the curved surface consistent with die cavity, if the product of large curved surface, can reference diagram 8, conformal water route 10 comprises main water route 11 and auxiliary water route 12, it is peripheral that main water route 11 is uniformly distributed in described die cavity 40, and be consistent to the vertical range of the inwall of described die cavity 40, for absorbing the heat from described die cavity; Described auxiliary water route 12 is uniformly distributed in the periphery in described main water route 11, is mainly used in the space heat from described main water route being delivered to mould periphery, reaches the effect of cooling, keeps the constant of mold temperature.

Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of ordinary skill in the field; without departing from the concept of the premise utility; some equivalent to substitute or obvious modification can also be made, and performance or purposes identical, all should be considered as belonging to protection domain of the present utility model.

Claims (3)

1. an inside has the mould in conformal water route, comprise die and die cavity, it is characterized in that: it is inner that described conformal water route is positioned at described die, comprise main water route and auxiliary water route, it is peripheral that described main water route is uniformly distributed in described die cavity, and the vertical range to the inwall of described die cavity is consistent, for absorbing the heat from described die cavity; Described auxiliary water route is distributed in the periphery in described main water route, for the heat from described main water route being delivered to the space of mould periphery; The water inlet in described conformal water route and delivery port lay respectively at the port in the described auxiliary water route being distributed in described die cavity both sides.

2. mould as claimed in claim 1, is characterized in that: described auxiliary water route is distributed in the both sides of described die cavity symmetrically.

3. mould as claimed in claim 1, is characterized in that: water inlet and the water outlet in described conformal water route are screw thread, are connected with outer water tube by screw thread.