CN203184648U - Ejecting mechanism by using air valve for compact powder metallurgy injection moulding machine - Google Patents
Ejecting mechanism by using air valve for compact powder metallurgy injection moulding machine Download PDFInfo
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- CN203184648U CN203184648U CN 201320230490 CN201320230490U CN203184648U CN 203184648 U CN203184648 U CN 203184648U CN 201320230490 CN201320230490 CN 201320230490 CN 201320230490 U CN201320230490 U CN 201320230490U CN 203184648 U CN203184648 U CN 203184648U
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- China
- Prior art keywords
- thimble
- ejecting mechanism
- ejection pin
- air valve
- base
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Abstract
The utility model discloses an ejecting mechanism by using an air valve for a compact powder metallurgy injection moulding machine. The ejecting mechanism comprises a male die and an ejecting mechanism body; the ejecting mechanism body comprises an air circuit and an ejection pin mechanism; a channel for accommodating the air circuit and a cavity for accommodating the ejection pin mechanism are formed in the male die; the air inlet end of the air circuit extends out of the male die, and the air outlet end of the air circuit is communicated with the cavity for accommodating the ejection pin mechanism; the ejection pin mechanism comprises an ejection pin, a base positioned at the bottom of the ejection pin and a spring; the cavity for accommodating the ejection pin mechanism comprises a base movable cavity and an ejection pin movable channel; the connected part of the base movable cavity and the ejection pin movable channel is provided with a spacer; the spring is sleeved on the lower end of the ejection pin; one end of the spring is fixed on the base; the other end of the spring is fixed on the spacer; and the opening of the ejection pin movable channel is positioned on the top of the male die and is communicated with the outside. According to the ejecting mechanism, the air valve is used for ejecting a workpiece to be demoulded, and the damage to the workpiece is reduced.
Description
Technical field
The utility model relates to powder metallurgy injection (mo(u)lding) machine field, is specifically related to the metallurgical injection (mo(u)lding) machine air valve of a kind of dense powder ejecting mechanism.
Background technology
Metal powder injection molding (Metal Powder Injection Molding is called for short MIM) is the metallurgical nearly clean shape technology that forms of a novel powder that modern plastics injection molding technology introducing field of powder metallurgy is formed.It is at first evenly mixing with pressed powder and organic binder bond, (～150 ℃) inject solidified forming in the die cavity with injection machine under the heating plasticizing state after granulating, method with chemistry or thermal decomposition removes the binding agent in the shaping base then, obtains final products finally by sintering densification.Metal powder injection molding is compared with traditional handicraft, have precision height, even tissue, excellent performance, characteristics such as production cost is low, its product are widely used in industrial circles such as Electronics and Information Engineering, biologic medical apparatus, office equipment, automobile, machinery, five metals, sports apparatus, timepiece industry, weapons and Aero-Space.
The processing step of metal powder injection molding comprises bonding → mixing → injection moulding → degreasing → sintering → post processing several steps, wherein after injection moulding, need the workpiece of moulding is removed from mould, mostly be to adopt ejecting mechanism at present, thimble by ejecting mechanism directly ejects the workpiece of moulding, in the process of ejecting, because thimble is permanently connected to, and the contact area of thimble top and workpiece is very little, causes workpiece to be damaged in knockout course easily.
The utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide the metallurgical injection (mo(u)lding) machine air valve of a kind of dense powder ejecting mechanism, promotes the workpiece demoulding by air valve.
For addressing the above problem, the technical scheme that the utility model adopts is as follows:
The metallurgical injection (mo(u)lding) machine air valve of a kind of dense powder ejecting mechanism, comprise male model and ejecting mechanism, described ejecting mechanism comprises gas circuit and ejector pin mechanism, described male model inside is provided with passage and the ejector pin mechanism container cavity that holds described gas circuit, the inlet end of described gas circuit stretches out male model, the outlet side of gas circuit communicates with the ejector pin mechanism container cavity, described ejector pin mechanism comprises thimble, be positioned at base and the spring of thimble bottom, described ejector pin mechanism container cavity comprises the movable chamber of base and thimble active tunnel, the movable chamber of base and thimble passage alive joint are provided with partition, described spring housing is in the lower end of thimble, the one end is fixed on the base, the other end is fixed on the partition, and the opening of described thimble active tunnel is positioned at the top of male model and communicates with the external world.
The utility model can be realized by following scheme:
As a kind of embodiment of the present utility model, described thimble top is provided with an ejection part, and the axial cross section area of described ejection part is up increased gradually by the bottom, and described thimble active tunnel is provided with the opening that is complementary with described ejection part.
As a kind of embodiment of the present utility model, the metallurgical injection (mo(u)lding) machine air valve of dense powder described in the utility model ejecting mechanism also comprises an air compression plant, and the outlet side of described air compression plant connects the inlet end of gas circuit.
Compared to existing technology, the beneficial effects of the utility model are:
1. the metallurgical injection (mo(u)lding) machine air valve of dense powder described in the utility model ejecting mechanism promotes the demoulding by air valve, avoids thimble length whole process in knockout course to contact with workpiece, prevents that workpiece is damaged;
2. the metallurgical injection (mo(u)lding) machine air valve of dense powder described in the utility model ejecting mechanism is provided with ejection part on the thimble top, has increased the contact area of thimble and workpiece, further reduces the impaired possibility of workpiece.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Fig. 1 is the metallurgical injection (mo(u)lding) machine air valve of dense powder described in the utility model ejecting mechanism structural representation;
Fig. 2 is the metallurgical injection (mo(u)lding) machine air valve of dense powder described in the utility model ejecting mechanism knockout course schematic diagram.
The specific embodiment
As Fig. 1, Fig. 2, shown in, the metallurgical injection (mo(u)lding) machine air valve of dense powder described in the utility model ejecting mechanism, comprise male model 1 and ejecting mechanism, described ejecting mechanism comprises gas circuit 2 and ejector pin mechanism, described male model 1 inside is provided with passage and the ejector pin mechanism container cavity that holds described gas circuit, the inlet end 10 of described gas circuit 2 stretches out male model 1, the outlet side of gas circuit 2 communicates with the ejector pin mechanism container cavity, described ejector pin mechanism comprises thimble 5, be positioned at base 3 and the spring 4 of thimble 5 bottoms, described ejector pin mechanism container cavity comprises the movable chamber 9 of base and thimble active tunnel 8, the movable chamber 9 of base is provided with the partition (not shown) with thimble passage alive 8 joints, described spring 4 is enclosed within the lower end of thimble 5, the one end is fixed on the base 3, the other end is fixed on the partition, and the opening of described thimble active tunnel 8 is positioned at the top of male model 1 and communicates with the external world.
As shown in Figure 2, as a kind of embodiment of the present utility model, described thimble 5 tops are provided with an ejection part 6, and the axial cross section area of described ejection part 6 is up increased gradually by the bottom, and described thimble active tunnel 8 is provided with the opening that is complementary with described ejection part 6.Wherein ejection part has increased the contact area of thimble 6 and workpiece 7, further reduces the impaired possibility of workpiece 7.
As a kind of embodiment of the present utility model, the metallurgical injection (mo(u)lding) machine air valve of dense powder described in the utility model ejecting mechanism also comprises an air compression plant (not shown), and the outlet side of described air compression plant connects the inlet end 10 of gas circuit.
Above-mentioned embodiment only is preferred embodiment of the present utility model; can not limit the scope of the utility model protection with this, the variation of any unsubstantiality that those skilled in the art does on basis of the present utility model and replacement all belong to the utility model scope required for protection.
Claims (3)
1. the metallurgical injection (mo(u)lding) machine air valve of dense powder ejecting mechanism, comprise male model and ejecting mechanism, it is characterized in that: described ejecting mechanism comprises gas circuit and ejector pin mechanism, described male model inside is provided with passage and the ejector pin mechanism container cavity that holds described gas circuit, the inlet end of described gas circuit stretches out male model, the outlet side of gas circuit communicates with the ejector pin mechanism container cavity, described ejector pin mechanism comprises thimble, be positioned at base and the spring of thimble bottom, described ejector pin mechanism container cavity comprises the movable chamber of base and thimble active tunnel, the movable chamber of base and thimble passage alive joint are provided with partition, described spring housing is in the lower end of thimble, the one end is fixed on the base, the other end is fixed on the partition, and the opening of described thimble active tunnel is positioned at the top of male model and communicates with the external world.
2. the metallurgical injection (mo(u)lding) machine air valve of dense powder according to claim 1 ejecting mechanism, it is characterized in that: described thimble top is provided with an ejection part, the axial cross section area of described ejection part is up increased gradually by the bottom, and described thimble active tunnel is provided with the opening that is complementary with described ejection part.
3. the metallurgical injection (mo(u)lding) machine air valve of dense powder according to claim 1 ejecting mechanism, it is characterized in that: it also comprises an air compression plant, the outlet side of described air compression plant connects the inlet end of gas circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320230490 CN203184648U (en) | 2013-04-28 | 2013-04-28 | Ejecting mechanism by using air valve for compact powder metallurgy injection moulding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320230490 CN203184648U (en) | 2013-04-28 | 2013-04-28 | Ejecting mechanism by using air valve for compact powder metallurgy injection moulding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203184648U true CN203184648U (en) | 2013-09-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320230490 Expired - Lifetime CN203184648U (en) | 2013-04-28 | 2013-04-28 | Ejecting mechanism by using air valve for compact powder metallurgy injection moulding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203184648U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844639A (en) * | 2020-07-17 | 2020-10-30 | 许兼 | High-precision injection mold |
-
2013
- 2013-04-28 CN CN 201320230490 patent/CN203184648U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844639A (en) * | 2020-07-17 | 2020-10-30 | 许兼 | High-precision injection mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130911 |