CN201143558Y

CN201143558Y - Cast die

Info

Publication number: CN201143558Y
Application number: CNU2007201713035U
Authority: CN
Inventors: 赵晓刚
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2007-11-29
Filing date: 2007-11-29
Publication date: 2008-11-05
Anticipated expiration: 2017-11-29

Abstract

The utility model provides a die casting mould, which comprises an exhausting structure. The exhausting structure consists of an exhausting inlet communicated with a cavity of the die casting mould, a first exhausting segment communicated with the exhausting inlet, a second exhausting segment communicated with the first exhausting segment, and a third exhausting segment communicated with the second exhausting segment, wherein the thicknesses of the first, second and third exhausting segment are decreased; the exhausting structure contains at least two third exhausting segments. As the exhausting structure of the die casting mould of the utility model adopts at least two third exhausting segments, the air in the cavity can be quickly and efficiently discharged out of the mould with the same quantity of the exhausting inlets while without adding the width of the third exhausting segments, thus ensuring the quality of the die cast.

Description

A kind of die casting

Technical field

The utility model relates to the exhaust structure of a kind of die casting, particularly a kind of die casting.

Background technology

Die casting generally comprises cover half on the cover half installing plate that is fixed on die casting machine, is fixed on the dynamic model on the die casting machine dynamic model installing plate, the relative cover half motion of this dynamic model servo-actuated mold mounting plate and finish matched moulds and die sinking.During matched moulds, form a die cavity between cover half and the dynamic model, liquid metals under high pressure is full of this die cavity.During die sinking, dynamic model separates with cover half so that foundry goods is taken out.

Say that in a sense die casting also is a kind of displacement apparatus, promptly liquid metals enters die cavity, displaces the air in the die cavity simultaneously, and the air in the die cavity is discharged to the mould outside by the exhaust structure on the die casting.Exhaust structure is to the outward appearance of foundry goods, and particularly the adjusting range of the quality of foundry goods inside and extrusion process has significant impact.

Figure 1 and Figure 2 is a kind of schematic diagram of syllogic exhaust structure 10 commonly used, for ease of understanding, among the figure this exhaust structure 10 is handled as entity.The inlet 12 of this exhaust structure 10 is communicated with an overflow well 14, it comprises and inlet 12 first exhaust section 16, second exhaust section 17 and the 3rd exhaust sections 18 that are communicated with, these exhaust sections are communicated with in turn and the thickness of these exhaust sections is the degree of depth of each exhaust section on mould, reduce in turn.Wherein, overflow well 14 is mainly used in deslagging; First exhaust section 16 and second exhaust section 17 are thicker to be successfully air to be discharged in order to guarantee, and the 3rd exhaust section 18 thin be in order to prevent material spray.

Yet this structure has following shortcoming:

1. because the thickness of the 3rd exhaust section 18 is too thin and far away from the inlet 12 of exhaust structure 10, cause exhaust effect bad; If increase the thickness of the 3rd exhaust section 18, material spray and influence safety easily again.

2. owing to being restricted, the thickness of the 3rd exhaust section 18 causes the exhaust deficiency, just must on mould, offer more exhaust entrance so that air is in time discharged, this will reduce product yield, simultaneously the stub bar that need remove during the following process die casting is just many more, thereby has increased the follow-up work amount.

3. because the thickness of the 3rd exhaust section 18 is too thin, and in order to guarantee casting forming, the inlet 12 of exhaust structure 10 is done very thickly sometimes, bring difficulty equally also for back segment machined polishing, cause production efficiency to reduce and the cost rising.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of die casting that adopts less exhaust entrance the air in the mold cavity can be discharged fast.

The utility model is to realize like this, a kind of die casting, comprise exhaust structure, described exhaust structure comprises the exhaust entrance that is communicated with the die cavity of described die casting, first exhaust section that is communicated with described exhaust entrance, second exhaust section that is communicated with described first exhaust section and the 3rd exhaust section that is communicated with described second exhaust section, the thickness-tapered of described first exhaust section, second exhaust section and the 3rd exhaust section, described the 3rd exhaust section is at least two.

Compared with prior art, the exhaust structure of die casting of the present utility model adopts at least two the 3rd exhaust sections, so can the exhaust entrance of similar number and do not increase under the situation of the 3rd exhaust section thickness can be apace, efficiently the air in the die cavity is discharged to the mould outside, guarantee the quality of die casting.

Description of drawings

Fig. 1 is the exhaust structure schematic diagram of a kind of die casting of the prior art.

Fig. 2 is the cross-sectional schematic along A-A line among Fig. 1.

Fig. 3 is the schematic diagram of the exhaust structure in the die casting of the utility model one embodiment.

Fig. 4 is the stagewise cutaway view schematic diagram along B-B line among Fig. 3.

Fig. 5 is the cross-sectional schematic along C-C line among Fig. 3.

Fig. 6 is the structural representation of a male model in the die casting of another embodiment of the utility model.

Fig. 7 is the structural representation of a master mold in the die casting of another embodiment of the utility model, and wherein the male model among this master mold and Fig. 6 is used and is used for the die casting phone housing.

The specific embodiment

In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

The schematic diagram of the exhaust structure 100 of Fig. 3 to the die casting that Figure 5 shows that the utility model one embodiment for ease of understanding, is handled this exhaust structure 100 among the figure as entity.

This exhaust structure 100 comprises first exhaust section 120, second exhaust section 140 and three the 3rd exhaust sections 160.The thickness of this first exhaust section 120, second exhaust section 140 and the 3rd exhaust section 160 is that the degree of depth of these exhaust sections on the die casting (not shown) successively decreased gradually, and the thickness of these the 3rd exhaust sections 160 is roughly the same.

One end of this first exhaust section 120 is communicated with an overflow well 170, and this overflow well 170 further is communicated with the die cavity (figure does not show) of die casting by exhaust entrance 180.The other end of this first exhaust section 120 is communicated with second exhaust section 140, and the bearing of trend of this second exhaust section 140 is perpendicular to the bearing of trend of first exhaust section 120.In other words, this second exhaust section 140 is to extend from an end vertical curve of first exhaust section 120 to form.

Above-mentioned three the 3rd exhaust section 160 spaces are provided with, and these the 3rd exhaust sections 160 extend in the same way from second exhaust section 140.The bearing of trend almost parallel of the bearing of trend of these the 3rd exhaust sections 160 and first exhaust section 120.In other words, these the 3rd exhaust sections 160 are three fork structures of second exhaust section 140.Influence safety for avoiding producing material spray, can make the 3rd exhaust section 160 that closes on first exhaust section 120 and first exhaust section 120 certain angle that staggers, so, can avoid the liquid metals in the die cavity to be ejected into the mould outside through first exhaust section 120 and the 3rd exhaust section 160 that closes on this first exhaust section 120.

During use, the air in the mold cavity flows into second exhaust section 140 afterwards through entering first exhaust section 120 after exhaust entrance 180, the overflow well 170, is discharged to the outside of mould then along three the 3rd exhaust sections 160.Compare with existing exhaust structure 10, because the exhaust structure 100 in the die casting of the present utility model adopts three the 3rd exhaust sections 160, so can the exhaust entrance of similar number and do not increase under the situation of the 3rd exhaust section thickness can be apace, efficiently the air in the die cavity is discharged to the mould outside, guarantee the quality of die casting.

Fig. 6 and Fig. 7 are the male model 200 in the die casting of another embodiment of the utility model and the schematic diagram of master mold 300, and wherein this male model 200 and master mold 300 are used and are used for the die casting phone housing.

This male model 200 comprises first shaping area 210 and is distributed in the three groups of slide blocks 220 and the take-up housing 230 of first shaping area, 210 front ends.Wherein, middle one group of slide block 220 and take-up housing 230 are positioned at the top of first shaping area 210 and vertically are provided with, and all the other two groups of slide blocks 220 and take-up housing 230 lay respectively at the left and right sides and the along continuous straight runs setting of first shaping area 210.

On male model 200, also be provided with first exhaust channel 240 and second exhaust channel 250, this first exhaust channel 240 and second exhaust channel 250 be positioned at the top of first shaping area 210 and be positioned in the middle of one group of slide block 220 and the both sides of take-up housing 230.This first exhaust channel 240 comprises first exhaust section 242, second exhaust section 244 that is communicated with first exhaust section 242, two the 3rd exhaust sections 246 that are communicated with second exhaust section 244.The bearing of trend approximate vertical of the bearing of trend of these two the 3rd exhaust sections 246 and second exhaust section 244.The end of each the 3rd exhaust section 246 further is formed with the 4th exhaust section 248.The thickness of this first exhaust section 242, second exhaust section 244, the 3rd exhaust section 246 and the 4th exhaust section 248 reduces in turn.This second exhaust channel 250 is similar to first exhaust channel 240, and difference is that second exhaust channel 250 comprises three the 3rd exhaust sections 256 and three the 4th exhaust sections 258.

This master mold 300 be provided with male model 200 on the second corresponding shaping area 310 of first shaping area 210, be located at two first exhaust sections 320 of second shaping area, 310 tops with the compartment of terrain, these two first exhaust sections 320 respectively with male model 200 on first exhaust channel 240, first exhaust section, the 242 corresponding settings of second exhaust channel 250.Each first exhaust section 320 is communicated with second shaping area 310 by an overflow well 340 and an exhaust entrance 350 respectively.

Also be provided with an exhaust structure 360 on this master mold 300, this exhaust structure 360 comprises roughly first exhaust section 362 that is " L " type, second exhaust section 364 that is communicated with first exhaust section 362 and two the 3rd exhaust sections 366 that are communicated with second exhaust section 364.This first exhaust section 362 further is communicated with second shaping area 310 by an overflow well 370 and an exhaust entrance 380.

When with male model 200 and master mold 300 matched moulds, first shaping area 210 and second shaping area 310 are formed the die cavity identical with the phone housing shape; Simultaneously, first exhaust section 242 of first exhaust channel 240 on the male model 200 is connected with one of them first exhaust section 320 on the master mold 300 and forms the first combination exhaust structure; Meanwhile, first exhaust section of second exhaust channel 250 is connected with another first exhaust section 320 on the master mold 300 and forms the second combination exhaust structure.So, promptly there are three exhaust structures to be communicated with die cavity.So, the air in the die cavity is discharged to the outside of mould by three exhaust structures.Because these exhaust structures all have the 3rd more exhaust section, so can by fewer purpose exhaust entrance and do not increase under the situation of the 3rd exhaust section thickness can be apace, efficiently the air in the die cavity is discharged to the mould outside, guarantee the quality of die casting.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1, a kind of die casting, comprise exhaust structure, described exhaust structure comprises the exhaust entrance that is communicated with the die cavity of described die casting, first exhaust section that is communicated with described exhaust entrance, second exhaust section that is communicated with described first exhaust section and the 3rd exhaust section that is communicated with described second exhaust section, the thickness-tapered of described first exhaust section, second exhaust section and the 3rd exhaust section is characterized in that: described the 3rd exhaust section is at least two.

2, die casting as claimed in claim 1 is characterized in that, the end of each the 3rd exhaust section further is formed with the 4th exhaust section.

3, die casting as claimed in claim 1 is characterized in that, the thickness of described the 3rd exhaust section is identical.

4, die casting as claimed in claim 1 is characterized in that, an end of described first exhaust section is communicated with described exhaust entrance by an overflow well.

5, as any one described die casting in the claim 1 to 4, it is characterized in that the bearing of trend of described second exhaust section is perpendicular to the bearing of trend of described first exhaust section; The bearing of trend of described the 3rd exhaust section is parallel with the bearing of trend of described first exhaust section.

6, die casting modeling tool as claimed in claim 5 is characterized in that: the 3rd exhaust section that closes on described first exhaust section staggers mutually with first exhaust section.

7, die casting as claimed in claim 1 is characterized in that, described die casting comprises male model and master mold; Described male model has first shaping area, and described master mold is provided with and the second corresponding shaping area of first shaping area on the described male model; Described exhaust structure is arranged on the described master mold.

8, die casting as claimed in claim 7 is characterized in that, described first exhaust section is " L " type.

9, die casting as claimed in claim 7 is characterized in that, described die casting also comprises another exhaust structure; Described another exhaust structure comprises first exhaust section that is arranged on the described male model, second exhaust section that is communicated with first exhaust section on the described male model, at least two the 3rd exhaust sections that are communicated with second exhaust section on the described male model, and is arranged on the described master mold and first exhaust section that described second shaping area can be communicated with first exhaust section on the described male model.

10, die casting as claimed in claim 1 is characterized in that, this die casting comprises male model and master mold; Described male model comprises first shaping area, and described master mold is provided with and the second corresponding shaping area of first shaping area on the described male model; Second exhaust section of described exhaust structure, the 3rd exhaust section are arranged on the described male model, and described first exhaust section comprise be arranged on a section on the described male model and be provided with on the described master mold and described first exhaust section can be positioned at one section on the described male model be communicated with described second shaping area another section.