CN208035248U - exhaust structure - Google Patents

Abstract

The utility model discloses a kind of exhaust structures, including preceding mould and rear mold, gap between the preceding mould and rear mold is for placing processed product, air discharge duct is equipped in the rear mold, the air discharge duct is embedded with exhaust pedestal, exhaust piece is fixed on the exhaust pedestal, the exhaust base top is equipped with T-shaped boss, and the bottom of the exhaust piece is equipped with the groove being adapted to the boss.The utility model solve it is existing in the prior art, in carrying out injection molding process, the slow technical problem of gas removal rate in cavity.

Description

Exhaust structure

Technical field

The utility model belongs to product mold technical field more particularly to a kind of exhaust structure.

Background technology

Currently, be to have exhaust chip architecture to be excluded for type intracavity gas on existing most of molds, i.e. mesh Be reach the quality for improving produced product, wherein most of exhaust chip architectures be rear mold directly design exhaust piece edge Part draws gas using the fit clearance between exhaust piece.With specific reference to attached drawing 1, exhaust piece has fit clearance in rear mold, is arranging Gas on piece begin to rehearse air drain draw gas.Exhaust piece is directly done in rear mold, because exhaust piece is higher, the thickness phase when design is vented piece To wider so that by for fear of exhaust duct negligible amounts when being vented in injection molding process, therefore cannot be effectively all gas Discharge, i.e., exhaust velocity cannot be guaranteed, and production product surface quality is influenced.

Therefore, the prior art is to be improved.

Utility model content

The main purpose of the utility model is that proposing a kind of exhaust structure, it is intended to solve it is existing in the prior art, It carries out in injection molding process, the slow technical problem of gas removal rate in cavity.

In order to solve the above-mentioned technical problem, the exhaust structure of the utility model, including preceding mould and rear mold, the preceding mould is with after Gap between mould is for placing processed product, and the rear mold is interior to be equipped with air discharge duct, and the air discharge duct is embedded with exhaust pedestal, Exhaust piece is fixed on the exhaust pedestal, the exhaust base top is equipped with T-shaped boss, and the bottom of the exhaust piece is set There is the groove being adapted to the boss.

Preferably, the two bottom sides of the exhaust pedestal are respectively equipped with the first protrusion and the second protrusion, first protrusion It is respectively embedded into the first bayonet and the second bayonet of the air discharge duct with the second protrusion.

The utility model has the advantages that：

1, it is based on exhaust pedestal setting, reduces the height of exhaust piece, allows exhaust piece quantity to increase, to greatest extent Gas is discharged, surface defects of products caused by when solving injection molding.

2, the matching relationship based on T-shaped boss and groove, increases and is formed by exhaust passage quantity, to ensure Gas exhaust is more smooth, to prevent product trapped gas, improves the production yield of product.

Description of the drawings

Fig. 1 is the existing exhaust structure structural schematic diagram described in background technology；

Fig. 2 is the sectional view of the existing exhaust structure described in background technology；

Fig. 3 is the structural schematic diagram in the utility model embodiment；

Fig. 4 is the sectional view in the utility model embodiment.

The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.

Specific implementation mode

It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this Utility model.

With reference to figure 1 and Fig. 2, Fig. 1 is the existing exhaust structure structural schematic diagram described in background technology, and Fig. 2 is background The sectional view of existing exhaust structure described in technology.

As depicted in figs. 1 and 2, exhaust piece 11 have fit clearance in rear mold, exhaust on piece begin to rehearse air drain draw gas.? Rear mold directly does exhaust piece, and because exhaust piece is higher, when design is vented piece, thickness is relatively wide so that in injection molding process By for fear of exhaust duct negligible amounts when middle exhaust, therefore effectively all gas cannot be discharged, i.e., exhaust velocity cannot be guaranteed, Production product surface quality is influenced.

It is the structural schematic diagram in the utility model embodiment with reference to figure 3 and Fig. 4, Fig. 3, Fig. 4 is implemented for the utility model Sectional view in example.

As shown in Figure 3 and Figure 4, the exhaust structure of the utility model, including preceding mould（It is not drawn into）With rear mold 23, the preceding mould Gap between rear mold 23 is equipped with air discharge duct, the air discharge duct is embedded with for placing processed product in the rear mold 23 It is vented pedestal 22, exhaust piece 21 is fixed on the exhaust pedestal 22,22 top of the exhaust pedestal is equipped with T-shaped boss 24, the bottom of the exhaust piece 21 is equipped with the groove being adapted to the boss.Exhaust structure in the present embodiment is to be applied to note It is moulded into during type, plays the role of the type intracavity gas that mould and rear mold are formed by before excluding；In the present embodiment, the row of being based on Gas pedestal is arranged, and reduces the height of exhaust piece, and exhaust piece quantity is allowed to increase, to which gas is discharged to greatest extent, with solution Certainly when injection molding caused by surface defects of products.Based on the matching relationship of T-shaped boss and groove, increases and be formed by Exhaust passage quantity, to prevent product trapped gas, improves the production yield of product to ensure that gas exhaust is more smooth.As The present embodiment it is preferred, the two bottom sides of the exhaust pedestal 22 are respectively equipped with the first protrusion 51 and second protrusion 52, described the One protrusion 51 and the second protrusion 52 are respectively embedded into the first bayonet and the second bayonet of the air discharge duct；Based on the first protrusion, the Snap-in cooperation between two protrusions, the first bayonet and the second bayonet, greatly reduces choking phenomenon in exhaust process.

It these are only the preferred embodiment of the utility model, it does not limit the scope of the patent of the present invention, every Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in Other related technical areas are equally included in the patent within the scope of the utility model.

Claims (2)

1. a kind of exhaust structure, which is characterized in that including preceding mould and rear mold, the gap between the preceding mould and rear mold is for placing Processed product, the rear mold is interior to be equipped with air discharge duct, and the air discharge duct is embedded with exhaust pedestal, is fixed on the exhaust pedestal It is vented piece, the exhaust base top is equipped with T-shaped boss, and the bottom of the exhaust piece is recessed equipped with being adapted to the boss Slot.

2. exhaust structure as described in claim 1, which is characterized in that it is convex that the two bottom sides of the exhaust pedestal are respectively equipped with first It rises and the second protrusion, first protrusion and the second protrusion is respectively embedded into the first bayonet and the second bayonet of the air discharge duct.