CN114130990A - Local pressure device of low pressure casting and low pressure casting equipment - Google Patents
Local pressure device of low pressure casting and low pressure casting equipment Download PDFInfo
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- CN114130990A CN114130990A CN202111564483.4A CN202111564483A CN114130990A CN 114130990 A CN114130990 A CN 114130990A CN 202111564483 A CN202111564483 A CN 202111564483A CN 114130990 A CN114130990 A CN 114130990A
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- casting
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- pressure casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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Abstract
The invention provides a local pressurizing device for low-pressure casting and low-pressure casting equipment, and relates to the technical field of low-pressure casting. The low-pressure casting local pressurizing device comprises a frame, a casting mold, an extruding piece and a power piece; the power part and the casting mould are both arranged on the frame; the casting mould is provided with a slide way which is in sliding seal with the extrusion part, so that the power part can push the extrusion part to move in the slide way, and the slide way is communicated with the cavity of the casting mould. The low-pressure casting equipment comprises a low-pressure casting local pressurizing device. The technical effect of eliminating the shrinkage cavity problem is achieved.
Description
Technical Field
The invention relates to the technical field of low-pressure casting, in particular to a local pressurizing device for low-pressure casting and low-pressure casting equipment.
Background
Aluminum and aluminum alloy low-pressure casting is a casting technology between gravity casting and pressure casting, and is commonly used for producing aluminum casting products with higher requirements, such as automobile hubs, motorcycle hubs, instruments, textile machinery, aerospace and the like.
In the common sand mold low-pressure casting production, compressed air is introduced into a crucible to produce pressure difference, so that the metal melt rises from a liquid lifting pipe, and the metal melt filled into a sand mold casting mold is solidified and formed under set pressure. When a thick part is formed, local shrinkage and looseness often occur due to insufficient feeding. The traditional process is changed, and the problem of local thick and large shrinkage cavities of some complex parts cannot be directly solved.
Therefore, it is an important technical problem to be solved by those skilled in the art to provide a low pressure casting local pressurizing device and a low pressure casting apparatus which can eliminate the shrinkage cavity problem.
Disclosure of Invention
The invention aims to provide a local pressurizing device for low-pressure casting and low-pressure casting equipment, which are used for relieving the technical problem of shrinkage cavity in the prior art.
In a first aspect, embodiments of the present invention provide a local pressurization device for low-pressure casting, including a frame, a mold, an extrusion member, and a power member;
the power part and the casting mould are both arranged on the frame;
the casting mould is provided with a slide way which is in sliding seal with the extrusion part, so that the power part can push the extrusion part to move in the slide way, and the slide way is communicated with a cavity of the casting mould.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the power member includes a pushing cylinder and a pushing head;
the fixed end of the pushing cylinder is arranged on the frame;
the pushing head is arranged at the output end of the pushing cylinder.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the pushing head is a metal head.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the extrusion piece is T-shaped, and a large end of the extrusion piece is located in the slideway.
In combination with the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the extrusion employs a sand core rod.
With reference to the first aspect, the present invention provides a possible implementation manner of the first aspect, wherein the casting mold includes a left mold and a right mold;
the left die is provided with a first sliding groove, the right die is provided with a second sliding groove corresponding to the first sliding groove, and the first sliding groove and the second sliding groove are combined to form the slideway.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, wherein the low-pressure casting local pressurization device further includes a clamp for clamping the mold;
the clamp is arranged on the frame, and the clamp is positioned above the casting mould.
With reference to the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect, where the fixture includes a fixed plate, a telescopic cylinder, and a guide rod;
the telescopic cylinder is arranged on the frame, the fixed plate is arranged on the frame through a guide rod, and the fixed plate is connected with the output end of the telescopic cylinder;
and a positioning block matched with the casting mould is arranged on the fixing plate.
In combination with the first aspect, embodiments of the present invention provide a possible implementation manner of the first aspect, wherein the end of the extrusion piece extending into the mold is adapted to the outer contour of the product to be cast.
In a second aspect, embodiments of the present invention provide a low-pressure casting apparatus including the low-pressure casting local pressurization device.
Has the advantages that:
the embodiment of the invention provides a local pressurizing device for low-pressure casting, which comprises a frame, a casting mold, an extruding piece and a power piece, wherein the casting mold is provided with a casting cavity; the power part and the casting mould are both arranged on the frame; the casting mould is provided with a slide way which is in sliding seal with the extrusion part, so that the power part can push the extrusion part to move in the slide way, and the slide way is communicated with the cavity of the casting mould.
Specifically, when carrying out the low pressure casting, the aluminium water enters into the die cavity of casting mould under the effect of atmospheric pressure in, after the aluminium water injection is accomplished, power spare is worked and is promoted the extruded piece and remove to the casting mould is inside, promptly, the extruded piece removes to the casting mould along the slide, at the in-process that the extruded piece removed, the extruded piece can pour into the die cavity with the aluminium water in the slide for the aluminium water in the die cavity is even fine and close, eliminates hole, loose scheduling problem.
Embodiments of the present invention provide a low-pressure casting apparatus including a low-pressure casting local pressurizing device, which has the above advantages compared to the prior art and will not be described herein again.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a local pressurization device for low-pressure casting according to an embodiment of the present invention;
FIG. 2 is a front view of a low pressure casting localized pressurization device provided by an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a low pressure casting localized pressurization device provided by an embodiment of the present invention;
fig. 4 is a schematic view of a left die and an extrusion in a low pressure casting partial pressure apparatus according to an embodiment of the present invention.
Icon:
100-a frame;
200-casting; 210-a mold cavity; 220-a slide;
300-extrusion;
400-a power member; 410-pushing the cylinder; 420-a pusher head;
500-a clamp; 510-a fixed plate; 520-a telescopic cylinder; 530-a guide bar;
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Referring to fig. 1, 2, 3 and 4, an embodiment of the present invention provides a low pressure casting partial pressurization apparatus, including a frame 100, a mold 200, an extrusion 300, and a power member 400; the power piece 400 and the casting mold 200 are both arranged on the frame 100; the casting mold 200 is provided with a slide way 220 in sliding seal with the extrusion member 300, so that the power member 400 can push the extrusion member 300 to move in the slide way 220, and the slide way 220 is communicated with the cavity 210 of the casting mold 200.
Specifically, when low-pressure casting is carried out, molten aluminum enters the cavity 210 of the casting mold 200 under the action of air pressure, after the molten aluminum is injected, the power part 400 works and pushes the extrusion part 300 to move towards the inside of the casting mold 200, namely, the extrusion part 300 moves towards the inside of the casting mold 200 along the slide way 220, and in the moving process of the extrusion part 300, the extrusion part 300 can inject the molten aluminum in the slide way 220 into the cavity 210, so that the molten aluminum in the cavity 210 is uniform and compact, and the problems of holes, looseness and the like are solved.
It should be noted that the amount of molten aluminum pushed by the extrusion 300 is designed according to the amount of solidification shrinkage of the casting mold, so as to ensure that the casting body is not affected on the premise of sufficient feeding.
Wherein the pressing member 300 is slidably and sealingly inserted in the slide 220 so that the molten aluminum in the cavity 210 is not leaked therefrom.
Wherein, set extruded article 300 into the T type, and extruded article 300's major part end is located slide 220, through such spacing setting, when avoiding injecting the aluminium water into the die cavity 210 in casting mould 200, the aluminium water is washed extruded article 300 away.
Referring to fig. 1, 2, 3 and 4, in an alternative to the present embodiment, the power member 400 includes a push cylinder 410 and a push head 420; the fixed end of the push cylinder 410 is disposed on the frame 100; the push head 420 is disposed at the output end of the push cylinder 410.
Specifically, the push cylinder 410 is disposed on the frame 100, and a mounting seat for fixing the push cylinder 410 may be disposed on the frame 100 according to the push distance of the actual extrusion 300, and the push distance of the push cylinder 410 may be adjusted by replacing mounting seats of different sizes, so that the push cylinder 410 does not need to be replaced, and the production cost is saved.
In an alternative of this embodiment, the pusher head 420 is a metal head.
Specifically, pushing head 420 for pushing extrusion 300 may be a metal head having a certain rigidity so as to push extrusion 300.
In an alternative to this embodiment, extrusion 300 employs a sand core rod.
Specifically, extrusion member 300 may be a sand core rod, and through such an arrangement, it is possible to prevent molten aluminum from adhering to extrusion member 300, facilitating subsequent demolding. And local chilling caused by materials different from the casting mould is avoided, so that surrounding melt is solidified in advance.
Referring to fig. 1, 2, 3 and 4, in an alternative to the present embodiment, a casting mold 200 includes a left mold and a right mold; the left die is provided with a first sliding groove, the right die is provided with a second sliding groove corresponding to the first sliding groove, and the first sliding groove and the second sliding groove are combined to form a sliding channel 220.
Specifically, a first sliding groove is formed in the left die, a second sliding groove is formed in the right die, and when the left die and the right die are closed, the first sliding groove and the second sliding groove are combined to form the sliding rail 220.
Referring to fig. 1, 2, 3 and 4, in an alternative of the present embodiment, the low-pressure casting partial pressure device further includes a clamp 500 for clamping the mold 200; the jig 500 is disposed on the frame 100, and the jig 500 is located above the mold 200.
Specifically, the frame 100 is provided with a clamp 500 for clamping and supporting the mold 200, and the left and right molds of the mold 200 are fixed by the clamp 500.
Referring to fig. 1, 2, 3 and 4, in an alternative of the present embodiment, a jig 500 includes a fixing plate 510, a telescopic cylinder 520 and a guide bar 530; the telescopic cylinder 520 is arranged on the frame 100, the fixing plate 510 is arranged on the frame 100 through the guide rod 530, and the fixing plate 510 is connected with the output end of the telescopic cylinder 520; the fixing plate 510 is provided with a positioning block adapted to the mold 200.
Specifically, when the casting mold 200 needs to be clamped and fastened, the telescopic cylinder 520 works, the extending end of the telescopic cylinder 520 drives the fixing plate 510 to move downwards, and at the moment, the fixing plate 510 moves along the direction of the guide rod 530 until the positioning hole in the fixing plate 510 is in contact with the casting mold 200, so that the casting mold 200 is fixed.
In an alternative to this embodiment, the end of extrusion 300 that extends into mold 200 is adapted to the outer contour of the product to be cast.
Specifically, one end of extrusion 300, which is deep into mold 200, may be adapted to the outer profile of the product to be cast, thereby reducing the finish of the cast product after demolding.
The embodiment provides a low-pressure casting device which comprises a low-pressure casting local pressurizing device.
Specifically, compared with the prior art, the low-pressure casting apparatus provided in this embodiment has the advantages of the above-mentioned local pressurizing device for low-pressure casting, and details thereof are not repeated herein.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A low pressure casting localized pressurization device, comprising: a frame (100), a casting mold (200), an extrusion member (300), and a power member (400);
the power part (400) and the casting mould (200) are both arranged on the frame (100);
the casting mould (200) is provided with a slide way (220) which is in sliding seal with the extrusion part (300) so that the power part (400) can push the extrusion part (300) to move in the slide way (220), and the slide way (220) is communicated with a cavity (210) of the casting mould (200).
2. The low pressure casting local pressurization device according to claim 1, characterized in that the power member (400) comprises a pushing cylinder (410) and a pushing head (420);
the fixed end of the pushing cylinder (410) is arranged on the frame (100);
the pushing head (420) is arranged at the output end of the pushing cylinder (410).
3. The low-pressure casting local pressurizing device as claimed in claim 2, wherein the pushing head (420) is a metal head.
4. The low pressure casting local pressurization device according to claim 1, characterized in that the extrusion member (300) is T-shaped, and the big end of the extrusion member (300) is located in the slideway (220).
5. The low pressure casting local pressurization device of claim 4, characterized in that said extrusion (300) employs a sand core rod.
6. The low-pressure casting localized pressurization device according to claim 1, characterized in that said casting mold (200) comprises a left mold and a right mold;
the left die is provided with a first sliding groove, the right die is provided with a second sliding groove corresponding to the first sliding groove, and the first sliding groove and the second sliding groove are combined to form the sliding way (220).
7. The low-pressure casting localized pressurization device according to claim 6, characterized by further comprising a clamp (500) for clamping said casting mold (200);
the clamp (500) is arranged on the frame (100), and the clamp (500) is positioned above the casting mould (200).
8. The low-pressure casting local pressurizing device as claimed in claim 7, wherein the jig (500) comprises a fixed plate (510), a telescopic cylinder (520) and a guide rod (530);
the telescopic cylinder (520) is arranged on the frame (100), the fixing plate (510) is arranged on the frame (100) through a guide rod (530), and the fixing plate (510) is connected with the output end of the telescopic cylinder (520);
and a positioning block matched with the casting mold (200) is arranged on the fixing plate (510).
9. The low-pressure casting local pressurizing device as claimed in any one of claims 1 to 8, wherein one end of the extruding member (300) extending into the casting mold (200) is adapted to the outer contour of the product to be cast.
10. A low-pressure casting apparatus comprising the low-pressure casting partial pressurizing device as recited in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111564483.4A CN114130990A (en) | 2021-12-20 | 2021-12-20 | Local pressure device of low pressure casting and low pressure casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111564483.4A CN114130990A (en) | 2021-12-20 | 2021-12-20 | Local pressure device of low pressure casting and low pressure casting equipment |
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| Publication Number | Publication Date |
|---|---|
| CN114130990A true CN114130990A (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111564483.4A Pending CN114130990A (en) | 2021-12-20 | 2021-12-20 | Local pressure device of low pressure casting and low pressure casting equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007253234A (en) * | 2006-02-24 | 2007-10-04 | Kosei Aluminum Co Ltd | Vertical-type casting apparatus and vertical-type casting method |
| CN101229580A (en) * | 2007-12-28 | 2008-07-30 | 中国兵器工业第五二研究所 | Partial pressurizing feeding technology of shape casting and control apparatus thereof |
| CN101623749A (en) * | 2008-07-13 | 2010-01-13 | 曾奇中 | Pressure casting die and low-pressure casting machine capable of generating high pressure |
| CN102825241A (en) * | 2012-09-21 | 2012-12-19 | 海门市沪海有色铸造有限公司 | Metallic low-pressure casting structure with partial pressurizing function |
| CN108057872A (en) * | 2017-12-30 | 2018-05-22 | 天津市航宇嘉瑞科技股份有限公司 | A kind of large size air injection machine |
-
2021
- 2021-12-20 CN CN202111564483.4A patent/CN114130990A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007253234A (en) * | 2006-02-24 | 2007-10-04 | Kosei Aluminum Co Ltd | Vertical-type casting apparatus and vertical-type casting method |
| CN101229580A (en) * | 2007-12-28 | 2008-07-30 | 中国兵器工业第五二研究所 | Partial pressurizing feeding technology of shape casting and control apparatus thereof |
| CN101623749A (en) * | 2008-07-13 | 2010-01-13 | 曾奇中 | Pressure casting die and low-pressure casting machine capable of generating high pressure |
| CN102825241A (en) * | 2012-09-21 | 2012-12-19 | 海门市沪海有色铸造有限公司 | Metallic low-pressure casting structure with partial pressurizing function |
| CN108057872A (en) * | 2017-12-30 | 2018-05-22 | 天津市航宇嘉瑞科技股份有限公司 | A kind of large size air injection machine |
Non-Patent Citations (1)
| Title |
|---|
| 尹超林: "压铸成型技术及模具——设计与实践", 重庆大学出版社, pages: 264 - 265 * |
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