CN215824237U

CN215824237U - Improve mould of exhaust effect

Info

Publication number: CN215824237U
Application number: CN202121879569.1U
Authority: CN
Inventors: 陆大伟
Original assignee: Shengwang Auto Parts Kunshan Co ltd
Current assignee: Shengwang Auto Parts Kunshan Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2022-02-15
Anticipated expiration: 2031-08-12

Abstract

The utility model discloses a mould for improving exhaust effect, which comprises: the device comprises an upper die, a lower die and exhaust pins, wherein the upper die is arranged above the lower die, the exhaust pins are vertically arranged on the assembly surface of the upper die and the lower die, and the exhaust pins are distributed in an annular array by taking a gate opening as an axis; the exhaust pin is arranged in a column shape, and exhaust holes penetrating through the upper end and the lower end of the exhaust pin are formed in the exhaust pin. Through the mode, before the mold is locked, air in the mold cavity of the mold can be quickly exhausted through the exhaust pin, and turbulence caused by airflow in the mold cavity is avoided, so that the defect of pores in castings in the mold cavity is effectively reduced, the air leakage rate of the castings is reduced, and the yield of the castings is improved.

Description

Improve mould of exhaust effect

Technical Field

The utility model relates to the field of die casting, in particular to a die for improving an exhaust effect.

Background

Wheel hub is the part that the vehicle is used for connecting tire and axle, and aluminum alloy automobile wheel hub is one of the important part of modern car, the rapid development of modern car, and aluminum alloy automobile wheel hub turns to the aluminum alloy by steel wheel hub and makes wheel hub, and the improvement of wheel hub quality and wheel hub output are proposed and are increased the more important of showing the mould quality, and the design and the processing of automobile wheel hub mould are also more and more paid attention to in China.

The aluminum alloy automobile wheel hub is commonly used low pressure casting die, and the quality of the die casting die is an important factor influencing the product quality. If the airtightness of the die casting of the alloy is poor, when pressure is applied to the die casting, the pressure inside and outside the die casting leaks, and there is a possibility that oil leakage, gas leakage, water leakage, or the like occurs. The die-casting air tightness is one of the most difficult problems to solve in the die-casting defects, and the reason for the aluminum alloy die-casting is probably errors in the combination of cooling conditions, so that various defects of aluminum liquid turbulence are caused.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides the die for improving the exhaust effect.

A mold for improving venting, comprising: the exhaust pin is vertically arranged on the assembly surface of the upper die and the lower die, and the exhaust pins are distributed in an annular array mode by taking a gate opening as an axis; the exhaust pin is arranged in a columnar shape, and exhaust holes penetrating through the upper end and the lower end of the exhaust pin are formed in the exhaust pin.

Preferably, the exhaust pins are provided with at least three groups, and each two groups of exhaust pins are not on the same horizontal plane.

Preferably, be provided with the constant head tank on mould and/or the lower mould, the exhaust round pin sets up in the constant head tank, exhaust round pin and constant head tank interference fit.

Preferably, the exhaust holes on the exhaust pins are distributed in an annular array by taking the central shaft of the exhaust pins as an axis.

Preferably, the diameter of the exhaust hole is 1 mm-5 mm.

Preferably, the device also comprises a guide assembly, the guide assembly is arranged on the assembling surface of the upper die and the lower die, the guide assembly comprises a guide pillar and a guide sleeve, and the guide sleeve is matched with the guide pillar.

Preferably, the guide post is arranged on the upper die, the guide sleeve is arranged on the lower die, and the guide post is inserted into the guide sleeve.

Preferably, the guide post is arranged on the lower die, the guide sleeve is arranged on the upper die, and the guide post is inserted into the guide sleeve.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a improve mould of exhaust effect, the mould is before the mode locking, and the air in the mould cavity has been discharged fast through the exhaust round pin, has avoided the air current to cause the turbulent flow in the mould cavity to effectively reduce the inside hole defect of foundry goods in the cavity, reduce the air leakage rate of foundry goods, improve the yields of foundry goods.

Drawings

Fig. 1 is a schematic structural view of a mold for improving an exhaust effect according to the present invention.

Fig. 2 is a schematic structural view of an upper mold of the mold for improving the venting effect according to the present invention.

Fig. 3 is a schematic structural view of a lower mold of the mold for improving the venting effect according to the present invention.

Fig. 4 is a schematic structural view of an exhaust pin in the mold for improving the exhaust effect according to the present invention.

Description of reference numerals:

1. an upper die; 2. a lower die; 3. an exhaust pin; 31. an exhaust hole; 4. a cavity; 5. a gate opening; 6. a guide assembly; 61. a guide post; 62. and (4) guiding a sleeve.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

Referring to the drawings, a mold for improving exhaust effect comprises: an upper die 1, a lower die 2 and an exhaust pin 3. The upper die 1 is arranged above the lower die 2, and a cavity 4 is arranged between the upper die 1 and the lower die 2. The lower die 2 can be used as a fixed die, the upper die 1 can be used as a movable die, and the gate opening 5 is arranged on the lower die 2.

The exhaust pin 3 is vertically arranged on the assembling surface of the upper die 1 and the lower die 2, namely the exhaust pin 3 is arranged on one surface of the upper die 1 and/or the lower die 2 facing the cavity 4, and the exhaust pin 3 is vertically arranged, so that gas is conveniently discharged upwards. In order to facilitate the fixing of the vent pin 3, the upper die 1 and/or the lower die 2 are/is provided with a positioning groove, the vent pin 3 is arranged in the positioning groove, and the vent pin 3 is in interference fit with the positioning groove, so that the installation stability of the vent pin 3 is improved.

The exhaust pins 3 are distributed in a circumferential array by taking the pouring gate 5 as an axis, and 6, 8 or 10 exhaust pins 3 on the same horizontal plane can be arranged according to the size of the cavity 4. For the exhaust effect of better improvement mould, exhaust round pin 3 is provided with three groups at least, and every two sets of exhaust round pin 3 all are not on same horizontal plane, and every exhaust round pin 3 of group sets up on the co-altitude not promptly for exhaust round pin 3 can be to the part of co-altitude not in the die cavity 4 exhaust, thereby improves exhaust effect.

The exhaust pin 3 is provided in a columnar shape, and the exhaust pin 3 is provided therein with exhaust holes 31 penetrating through the upper and lower ends of the exhaust pin 3, and the exhaust holes 31 may be formed by laser drilling on the exhaust pin 3. Specifically, the exhaust holes 31 on the exhaust pin 3 are distributed in an annular array by taking the central axis of the exhaust pin 3 as an axis, and the diameter of the exhaust holes 31 is 1 mm-5 mm.

In order to better match the upper die 1 with the lower die 2, the die for improving the exhaust effect further comprises a guide assembly 6. The guide assembly 6 is arranged on the assembling surface of the upper die 1 and the lower die 2, and when the upper die 1 and the lower die 2 are assembled, the guide assembly 6 plays a role in positioning. The guide assembly 6 comprises a guide post 61 and a guide sleeve 62, and the guide sleeve 62 is matched with the guide post 61. The guide post 61 can be arranged on the upper die 1, the guide sleeve 62 is arranged on the lower die 2, and the guide post 61 is inserted into the guide sleeve 62; it is also possible to arrange the guide post 61 on the lower die 2 and the guide bush 62 on the upper die 1, the guide post 61 being inserted into the guide bush 62. The guide post 61 and the guide sleeve 62 are both mounted on the die by bolts.

In the in-service use process, holding furnace aluminium hot water gets into mould cavity 4 through runner mouth 5 in, carries out the drainage water conservancy diversion to the aluminium hot water that gets into in the cavity 4 through exhaust round pin 3, plays carminative effect, lets mould cavity 4 can not lead to the fact the condition that has the air current turbulent flow.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A mold for improving venting, comprising: the exhaust pin is vertically arranged on the assembly surface of the upper die and the lower die, and the exhaust pins are distributed in an annular array mode by taking a gate opening as an axis; the exhaust pin is arranged in a columnar shape, and exhaust holes penetrating through the upper end and the lower end of the exhaust pin are formed in the exhaust pin.

2. The mold for improving exhaust effect according to claim 1, wherein: the exhaust pin is provided with three groups at least, and every two groups of exhaust pins are not on the same horizontal plane.

3. The mold for improving exhaust effect according to claim 1, wherein: the upper die and/or the lower die are/is provided with a positioning groove, the exhaust pin is arranged in the positioning groove, and the exhaust pin is in interference fit with the positioning groove.

4. The mold for improving exhaust effect according to claim 1, wherein: the exhaust holes on the exhaust pin are distributed in an annular array mode by taking the central shaft of the exhaust pin as an axis.

5. The mold for improving exhaust effect according to claim 1, wherein: the diameter of the exhaust hole is 1 mm-5 mm.

6. The mold for improving exhaust effect according to claim 1, wherein: the guide assembly is arranged on the assembling surface of the upper die and the lower die and comprises a guide pillar and a guide sleeve, and the guide sleeve is matched with the guide pillar.

7. The mold for improving air exhaust effect as claimed in claim 6, wherein: the guide post is arranged on the upper die, the guide sleeve is arranged on the lower die, and the guide post is inserted into the guide sleeve.

8. The mold for improving air exhaust effect as claimed in claim 6, wherein: the guide post is arranged on the lower die, the guide sleeve is arranged on the upper die, and the guide post is inserted into the guide sleeve.