CN210188450U - Oxygen-flushing die-casting die - Google Patents
Oxygen-flushing die-casting die Download PDFInfo
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- CN210188450U CN210188450U CN201920788346.0U CN201920788346U CN210188450U CN 210188450 U CN210188450 U CN 210188450U CN 201920788346 U CN201920788346 U CN 201920788346U CN 210188450 U CN210188450 U CN 210188450U
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- oxygen
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- flushing
- ejector rod
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Abstract
The utility model discloses an oxygen-flushing die-casting die, which comprises a die-casting device, a feeding device and an oxygen-flushing device, wherein the die-casting device comprises an upper die body, a lower die body and a mandril, the lower die body is provided with a mandril channel, a first opening of the mandril channel is formed on the surface of the feeding runner, and the mandril is arranged in the mandril channel; the feeding device comprises a feeding flow channel, the feeding flow channel is formed on the inner surface of the lower die body, the feeding flow channel is communicated with the die-casting space, the oxygen flushing device comprises an oxygen flushing channel and an oxygen flushing seam, the oxygen flushing seam is used for providing oxygen into the die-casting space, the oxygen flushing seam is formed between the outer wall of one section of the ejector rod close to the first opening and the inner wall of the ejector rod channel correspondingly, the oxygen flushing seam is communicated with the feeding flow channel on the inner surface of the lower die body, the oxygen is provided into the die-casting space, efficient air replacement is achieved, the surface quality of a die-casting piece is provided, and the problems of flow marks and the like are avoided.
Description
Technical Field
The utility model relates to an aluminum alloy die-casting production field technical field, more specifically say, relate to a towards oxygen die-casting grinding apparatus.
Background
At present, an oxygen-flushing nozzle of an aluminum alloy oxygen-flushing die-casting die is generally arranged in two modes, namely, the oxygen-flushing nozzle is communicated with a feeding pressure chamber and supplies oxygen into the feeding pressure chamber, but the arrangement can cause that air in a die-casting space cannot be sufficiently replaced; another way is to connect the oxygen flushing nozzle with the die-casting space and supply oxygen to the die-casting space, however, this arrangement will result in insufficient replacement of air in the flow passage and the feeding pressure chamber, and will replace oxygen in the feeding process. That is, the conventional oxygen purging systems have a certain technical problem, and cannot efficiently replace the oxygen with the air in the die casting space.
SUMMERY OF THE UTILITY MODEL
To the not enough among the above-mentioned prior art, the utility model aims at providing an towards oxygen die casting die forms towards oxygen seam between ejector pin and ejector pin passageway, realizes the high-efficient replacement of the air in oxygen and the die-casting space, and then improves the surface quality of die-casting component.
In order to realize the purpose, the technical scheme of the utility model is that:
an oxygen punching and die-casting die comprises a die-casting device, a feeding device and an oxygen punching device, wherein the die-casting device comprises an upper die body, a lower die body and an ejector rod, a die-casting space is formed after the upper die body and the lower die body are assembled, an ejector rod channel is arranged on the lower die body, the ejector rod is arranged in the ejector rod channel, and a first opening of the ejector rod channel is formed on the surface of a feeding runner; the feeding device comprises a feeding runner, the feeding runner is formed on the inner surface of the lower die body, the feeding runner is communicated with the die-casting space and used for guiding die-cast metal liquid to enter the die-casting space, the oxygen flushing device comprises an oxygen flushing channel and an oxygen flushing seam, the oxygen flushing channel is communicated with the oxygen flushing seam, the oxygen flushing channel is communicated with an oxygen source and used for transmitting oxygen, the oxygen flushing seam is used for providing oxygen to the die-casting space, and the oxygen flushing device is characterized in that the ejector rod is close to one section of outer wall of the first opening and corresponds to the inner wall of the ejector rod channel, and the oxygen flushing seam is formed between the outer wall of the ejector rod and the inner wall of the ejector rod channel. With towards the feeding runner intercommunication of oxygen seam and lower mould internal surface, provide oxygen to the die-casting space in, can realize that some oxygen gets into in the die-casting space and carries out the replacement with the air, have some oxygen entering feeding in addition and press the room, replace with the air that presses the room in, and then realize efficient air replacement, provide the surface quality of die casting, avoid the appearance of flow mark scheduling problem.
Furthermore, a section of the ejector rod close to the first opening is provided with a notch, and the oxygen flushing seam is formed between the notch and the inner wall of the corresponding ejector rod channel. The notch comprises a first plane and a second plane, wherein the first plane is parallel to the axial direction of the ejector rod, the second plane is perpendicular to the axial direction of the ejector rod, and the first plane is perpendicular to the second plane.
Optionally, a section of the ejector rod close to the first opening has a smaller diameter than that of the ejector rod, and an annular oxygen flushing seam is formed between the section of the ejector rod close to the first opening and the corresponding inner wall of the ejector rod channel. Preferably, the gap of the oxygen flushing seam is 0.02-0.1 mm. The gap of the oxygen flushing gap needs to be selected with proper size, so that the requirement of flushing oxygen can be met, and the aluminum liquid is prevented from flowing back to the oxygen flushing gap.
Further, the ejector rod channel comprises a second opening, the second opening is formed in the outer surface of the lower die body, and a shaft sealing device is formed at the second opening and used for guaranteeing the air tightness and the sealing performance of the die-casting space. Preferably, the shaft sealing device is an O-shaped rubber ring.
Furthermore, the metal liquid for die casting is oxidizable die casting aluminum liquid, so that a die casting component with high hardness and multiple selectable colors can be obtained.
Borrow by above-mentioned technical scheme, the utility model discloses at least, have following advantage: the oxygen flushing seam is communicated with a feeding flow channel on the inner surface of the lower die body, oxygen is provided into the die-casting space, a part of oxygen can enter the die-casting space to be replaced with air, and a part of oxygen can enter the feeding pressure chamber to be replaced with air in the pressure chamber, so that efficient air replacement is realized, the surface quality of a die-casting piece is provided, and the problems of flow marks and the like are avoided; the gap of the oxygen flushing seam needs to be selected with a proper size, so that the requirement of flushing oxygen can be met, and the situation that the die-casting metal liquid flows back to the oxygen flushing seam is avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a lower die body of an oxygen-filled die-casting die according to an embodiment of the present invention.
Fig. 2 is a side view of a die oxygen-filled and die-cast mold according to an embodiment of the present invention.
Fig. 3 is a partially enlarged view of fig. 2.
Fig. 4 is a schematic structural diagram of an oxygen-filled die-casting mold according to an embodiment of the present invention.
Reference numerals:
a die casting device 10; a lower die body 11; the top rod 12, the first plane 121 and the second plane 122; a ram channel 13, a first opening 131, a second opening 132; an O-shaped rubber ring 14; an upper mold body 15;
a feeding device 20; a feed flow channel 21; a tap cone 22; a flow distribution sleeve 23; a diversion gap 24;
an oxygen flushing device 30; an oxygen purge channel 31; and an oxygen flushing seam 32.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The oxygen-charging die-casting mold according to the embodiment of the invention is described in detail below with reference to fig. 1 to 4. An oxygen-flushing die-casting die comprises: die casting device 10, feed device 20 and towards oxygen device 30.
The die-casting die 10 comprises an upper die body 15 and a lower die body 11, and a die-casting space is formed after the upper die body 15 and the lower die body 11 are assembled, so that molten metal is cooled and formed in the die-casting space to obtain the required die-casting component.
The feeding device 20 comprises a flow dividing nozzle and a feeding runner 21, one port of the flow dividing nozzle is communicated with a feeding pressure chamber for providing die-cast molten metal into the die-casting space, the feeding pressure chamber adopts a common structure in the field, and is not described in detail here, and generally comprises an injection cavity, an injection piston/punch and a liquid injection port/sprue, and the other port of the flow dividing nozzle is communicated with the feeding runner 21.
The flow distribution nozzle is composed of a flow distribution cone 22 and a flow distribution sleeve 23, the flow distribution cone 22 is arranged on the lower die body 11, a flow distribution cone notch 24 is arranged on the flow distribution cone 22 and communicated with the feeding runner 21, the flow distribution sleeve 23 is arranged on the upper die body 15, and the flow distribution sleeve 23 is sleeved on the flow distribution cone 22 after die assembly to form the flow distribution nozzle.
The feeding runner 21 is formed on the inner surface of the lower die body 11 and is used for guiding the metal liquid for die casting to flow into the die casting space, and the metal liquid passes through the flow dividing nozzle and then enters the die casting space after passing through the feeding runner 21.
Further, the die-cast molten metal is preferably an oxidizable die-cast aluminum liquid, which can make the aluminum alloy more resistant to replication, increase hardness, and enable coloring, such as black, gold, etc., of the aluminum alloy part.
The die casting mold 10 further includes a knockout 12 for demolding the die cast member. Specifically, a ram channel 13 is provided on the lower die body 11, the ram 12 is disposed in the ram channel 13, a first opening 133 of the ram channel 13 is formed on the surface of the feeding flow channel 21, a second opening 132 of the ram channel 13 is formed on the outer surface of the lower die body 11, one end of the ram 12 extends into the die-casting space, and the other end is connected to a power mechanism. Normally, the jack 12 is provided in the jack passage 13 movably up and down, and the jack 12 is tightly fitted to the jack passage 13 to prevent the die-cast aluminum liquid oxidizable from flowing into the jack passage 13.
In order to ensure the airtightness and sealing performance of the cavity, a shaft sealing means is formed at the second opening 132 of the lift pin passage 13 of the lift pin 12 and the lower mold body 11. Specifically, the shaft sealing device is an O-ring 14.
The oxygen flushing device comprises an oxygen flushing channel 31 and an oxygen flushing nozzle, wherein the oxygen flushing channel 31 is communicated with an oxygen source and used for transmitting oxygen, the oxygen flushing nozzle is used for providing oxygen for the pressure casting space, further, the oxygen flushing nozzle is an oxygen flushing gap 32, the gap width of the oxygen flushing gap 32 is 0.02-0.1mm, and oxidizable pressure casting aluminum liquid can flow back into the ejector rod channel 13 due to the fact that the gap width is too large. The arrows in fig. 2 run in the direction of the oxygen supply to the diecasting space.
Specifically, a section of the ejector rod 12 near the first opening 131 is formed with a notch, and an oxygen flushing slit 32 is formed between the notch and the inner wall of the corresponding ejector rod channel 13. The notch comprises a first plane 121 and a second plane 122, wherein the first plane 121 is parallel to the axial direction of the top bar 12, the second plane 122 is perpendicular to the axial direction of the top bar 12, and the first plane 121 and the second plane 122 are perpendicular to each other.
Alternatively, the oxygen flushing slit 32 may be formed such that a section of the lift pin 12 near the first opening 131 has a smaller diameter than the diameter of the lift pin 12, and the annular oxygen flushing slit 32 is formed between the section of the lift pin 12 near the first opening 131 and the inner wall of the corresponding lift pin passage 13.
The inner wall of the ejector rod channel 13 is communicated with the oxygen flushing channel 31, and oxygen is flushed into the die-casting space in the die-casting process of the die.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An oxygen-flushing die-casting die comprises a die-casting device (10), a feeding device (20) and an oxygen-flushing device (30),
the die-casting device (10) comprises an upper die body (15), a lower die body (11) and an ejector rod (12), wherein a die-casting space is formed after the upper die body (15) and the lower die body (11) are assembled, an ejector rod channel (13) is arranged on the lower die body (11), and the ejector rod (12) is arranged in the ejector rod channel (13);
the feeding device (20) comprises a feeding flow passage (21), the feeding flow passage (21) is formed on the inner surface of the lower die body (11), the feeding flow passage (21) is communicated with the die-casting space and used for guiding the metal liquid for die-casting to enter the die-casting space, a first opening (131) of the ejector rod channel (13) is formed on the surface of the feeding flow passage (21),
the oxygen flushing device (30) comprises an oxygen flushing channel (31) and an oxygen flushing seam (32), the oxygen flushing channel (31) is communicated with the oxygen flushing seam (32), the oxygen flushing channel (31) is communicated with an oxygen source and used for transmitting oxygen, the oxygen flushing seam (32) is used for providing oxygen to the pressure casting space,
it is characterized in that the preparation method is characterized in that,
the oxygen flushing seam (32) is formed between the outer wall of one section of the ejector rod (12) close to the first opening (131) and the inner wall of the corresponding ejector rod channel (13).
2. The oxygen-scavenging die-casting die as claimed in claim 1, wherein a section of the ejector rod (12) close to the first opening (131) is formed with a notch, and the oxygen-scavenging slit (32) is formed between the notch and the inner wall of the corresponding ejector rod channel (13).
3. The oxygen-filled die casting mold according to claim 2, wherein the notch comprises a first plane (121) and a second plane (122), wherein the first plane (121) is parallel to the axial direction of the carrier rod (12), the second plane (122) is perpendicular to the axial direction of the carrier rod (12), and the first plane (121) and the second plane (122) are perpendicular to each other.
4. The oxygen-scavenging die-casting die as claimed in claim 1, wherein a section of the ejector rod (12) close to the first opening (131) has a smaller diameter than that of the ejector rod (12), and the annular oxygen-scavenging seam is formed between the section of the ejector rod (12) close to the first opening (131) and the inner wall of the corresponding ejector rod channel (13).
5. The oxygen-scavenging die-casting die as claimed in claim 1, wherein the gap of the oxygen-scavenging slit (32) is 0.02-0.1 mm.
6. The oxygen-filled die casting mold as claimed in claim 1, wherein the ram channel (13) includes a second opening (132), the second opening (132) being formed on an outer surface of the lower mold body (11), a shaft sealing means being formed at the second opening (132).
7. The oxygen-filled die casting mold as claimed in claim 6, wherein the shaft sealing means is an O-ring (14).
8. The oxygen-filled die casting mold of claim 1 wherein the die casting molten metal is an oxidizable die casting aluminum liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920788346.0U CN210188450U (en) | 2019-05-29 | 2019-05-29 | Oxygen-flushing die-casting die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920788346.0U CN210188450U (en) | 2019-05-29 | 2019-05-29 | Oxygen-flushing die-casting die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210188450U true CN210188450U (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920788346.0U Active CN210188450U (en) | 2019-05-29 | 2019-05-29 | Oxygen-flushing die-casting die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210188450U (en) |
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- 2019-05-29 CN CN201920788346.0U patent/CN210188450U/en active Active
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