CN1095653A

CN1095653A - Die cast assembly with breather valve

Info

Publication number: CN1095653A
Application number: CN 93106453
Authority: CN
Inventors: F·霍德勒
Original assignee: F Hodler & Co Ltd
Current assignee: F Hodler & Co Ltd; Fondarex F Hodler and Cie SA
Priority date: 1993-05-24
Filing date: 1993-05-24
Publication date: 1994-11-30

Abstract

A kind of die cast assembly, it comprises: two half modules that can move along die joint, but and breather valve of forming by two separate sections, but these two separate sections are contained in respectively on the corresponding half module, can cooperate along die joint, so that define a blow vent, this blow vent is communicated with die cavity and extends along die joint, wherein be provided with a device, when these two halves modules combine, can be flexibly these two parts of this breather valve be pressed against mutually together, the power that acts on the power between these breather valve two separate sections and act between these two half modules can not influenced each other.

Description

Die cast assembly with breather valve

The relevant a kind of die cast assembly of the present invention, particularly a kind of die cast assembly with breather valve.

Therefore die cast assembly must be able to be ventilated, and is provided with breather valve, this breather valve or be contained in the cast mold half, or be screwed onto on the cast mold half and concordant with its end face.The end face of breather valve must align really with the die joint of die piece, thereby after the mold closure, the end face of breather valve is accepted the mating surface of another half module fully, to prevent to cast back molten metal ejection.As long as this condition can accomplish that casting manipulations just can be kept fault-free always.

Yet in many casting manipulationses, particularly use when big die piece, the temperature difference of die piece between everywhere usually causes one of them half module distortion, thereby can't guarantee that two half modules are closed reliably on whole die joint.This just causes motlten metal to spray between the mating surface of breather valve end face and die piece, and the result damages breather valve, perhaps since metal attached to causing operation interruption frequent and costliness on the end face around the valve port.

Therefore, purpose of the present invention promptly is to alleviate this shortcoming, and a kind of die cast assembly with breather valve is provided, it can improve module have when distortion the breather valve end face with the closed situation between another half module mating surface accordingly.

Die cast assembly provided by the invention comprises: two half modules that can cooperate and define a die cavity along die joint, and breather valve of forming by two separate sections, they are contained in respectively on the corresponding half module, can cooperate to define a blow vent along this die joint, this blow vent is communicated with this die cavity and extends along die joint, wherein be provided with a device, when two die piece combine, can be flexibly these two parts of breather valve be pressed against mutually together, make the power between two separate sections that act on this breather valve and the power that acts between these two half modules can not influence each other.

Therefore, the present invention's device has embodied a compensator, and this compensator can prevent to result from the variations in temperature of die cast assembly and adverse effects such as distortion are applied on the breather valve of die cast assembly.This device prevents that reliably motlten metal is sprayed on the breather valve zone, reduces the danger of generation accident greatly, has improved production efficiency simultaneously.

Below as follows to one embodiment of the present of invention as an example with reference to description of drawings.

Description of drawings

Fig. 1 ties up to the profile of the die piece of open state, and wherein this die piece has known breather valve;

Fig. 2 is the profile of the preferred embodiment of die piece of the present invention, and wherein this die piece ties up to the enable possition;

Fig. 3 is the profile that the die piece of Fig. 2 is in closure state;

Fig. 4 is the plane of the die piece of Fig. 3; And

The profile that Fig. 5 system cuts open along the A-A hatching of Fig. 4.

Fig. 1 is the profile of known casting machine, and label 1 is represented fixed form; Label 2 is represented a template movably; The fixing half module of label 3 representatives; Label 4 is represented movably half module; Label 5 is represented die cavity; Label 6 is represented breather valve, and this breather valve 6 can be screwed onto on the half module 3; Label 6a represents the end face of this breather valve 6; Label 7 is represented blow vent; Label 8 representative ventilation guide grooves, this ventilation guide groove 8 extends to the blow vent 7 of breather valve from die cavity 5; Label 9 is represented exhaust outlet.

Fig. 2 shows an embodiment of die cast assembly of the present invention, and label wherein is corresponding with Fig. 1.Can do slightly that the counterpart 15 that moves is installed on the removable half module 4 by screw 16 and relative with breather valve 6 on the fixed mold 3 perpendicular to die joint among the figure, this screw 16 is guided in the slotted eye 15b by spring pad Figure 17.Counterpart 15 is had the spring system of foundry goods 10, piston 11 and spring buttress 12 and is pushed to the right, thereby when die piece was opened, the surperficial 15a that counterpart 15 cooperates with the end face 6a of vent valve member 6 can cross end face 6a one segment distance 13 of half module 4 on die joint.For simplicity, distance 13 approximately is 1 millimeter.The motion backward of (as shown in Figure 3) counterpart 15 is compressed spring 12 and produces an elastic force when die piece is closed, thereby the end face 6a of the mating surface 15a of counterpart 15 and breather valve 6 closely closing mutually always reaches 0.3 millimeter and also can keep tight closing even half module 3 or 4 is out of shape because of temperature or other various reasons.

Also can promote breather valve 6 to replace counterpart 15 with spring.

Fig. 4 is in the top view of closure state for Fig. 3 die cast assembly.

Fig. 5 system is along the view of the A-A line of Fig. 4, and wherein shade rings the part that motlten metal that the part representative very easily leaked according to the known structure of Fig. 1 influences.

Claims

1, a kind of die cast assembly, it comprises: two half modules that can move and define a die cavity along die joint, but and breather valve of forming by two separate sections, but these two separate sections are contained in respectively on the corresponding half module, can cooperate so that define a blow vent along this die joint, this blow vent is communicated with die cavity and extends along die joint, wherein be provided with a device, when this two halves module combines, can be flexibly these two parts of this breather valve be pressed against mutually together, the power that acts on the power between these breather valve two separate sections and act between these two half modules can not influenced each other.

2, die cast assembly according to claim 1, it is characterized in that, wherein the part of this breather valve is a counterpart, this counterpart is configured in wherein on the half module, thereby can move perpendicular to die joint, this counterpart is subjected to spring action, thereby when this die cast assembly separates, make this counterpart cross the end face of this half module, when this die cast assembly is closed, pushed back die joint then by this spring.

3, die cast assembly according to claim 1, it is characterized in that the vent valve member that wherein has an exhaust outlet is mounted to and can moves perpendicular to die joint, it is pushed by spring, when opening, die cast assembly surpasses die joint, and this die joint of when this die cast assembly is closed, withdrawing.

4, as the die cast assembly as described in claim 2 or 3, it is characterized in that, be provided with a screw fastening device, be used for removable vent valve member is installed on corresponding half die piece lightly and flexibly, on this removable vent valve member, be provided with slotted eye, so that under the assistance of spring washer, guide this screw fastening device.

5, die cast assembly according to claim 1 is characterized in that, is provided with a spring system and is used for promoting this removable vent valve member, and this spring system comprises a foundry goods with a buttress spring, and this buttress spring is supported in this foundry goods, is guided by a piston simultaneously.