Vacuum gravity casting device for aluminum alloy products

Abstract

The utility model discloses a vacuum gravity casting device for an aluminum alloy product. The vacuum gravity casting device comprises a rack, a left vacuum frame, a right vacuum frame, a pouring ladle and a mold, the right vacuum frame is connected to the rack, the left vacuum frame is in sliding fit with the rack, the first oil cylinder drives the left vacuum frame to make contact with the right vacuum frame to form a closed space, and a connecting opening used for being communicated with a vacuum pump is formed in the left vacuum frame or the right vacuum frame; the mold is located in the closed space and at least comprises an upper mold and a lower mold, the lower mold is connected to the inner wall of the right vacuum frame, the upper mold is located on one side of the lower mold, a cavity is formed when the upper mold is close to the lower mold, and a sprue is formed in the top end of the cavity; the pouring ladle is rotationally connected to the right vacuum frame and located above the pouring gate. Compared with the prior art, a vacuum state is also formed in the mold, the common problems of air entrapment and pinhole casting do not occur in a product in the casting process, and the qualification rate of casting production is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminum alloy foundry technical field especially relates to a kind of aluminum alloy product vacuum gravity casting device. BACKGROUND

[0002] Auto parts are the units that constitute the whole car and the products serving the car. There are many kinds of auto parts. With the improvement of people's living standards, people's consumption of cars is also increasing, and the market for auto parts is also becoming larger. In recent years, auto parts manufacturers are also developing rapidly.

[0003] Aluminum alloy is widely used in the production of auto parts due to its high tensile strength, good elongation, excellent corrosion resistance and low cost. With the increasing demand for aluminum alloy castings, how to manufacture aluminum alloy castings with excellent performance for automotive parts has attracted more and more attention. In the prior art, aluminum alloy wheel hubs are mostly produced by mold casting.

[0004] In the traditional casting process, aluminum alloy products may have air trapping and porosity, which not only affects the casting efficiency, but also reduces the product's pass rate. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of aluminum alloy product vacuum gravity casting device, first pour aluminum liquid into ladle before work, then move left vacuum frame to make it adhere to right vacuum frame, then start vacuum pump to perform vacuum treatment on vacuum frame through connecting port, when vacuum frame is in vacuum state, rotate ladle to pour, this process can refine aluminum liquid, and vacuum state is formed in mold, so that the product does not have common air trapping and pinhole casting problems during pouring, greatly improving the pass rate of casting production, to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of aluminum alloy product vacuum gravity casting device, including rack, left vacuum frame, right vacuum frame, ladle and mold;Right vacuum frame is connected to rack, left vacuum frame is slidably fitted to rack, first oil cylinder drives left vacuum frame and right vacuum frame to contact to form airtight space, connecting port for communicating vacuum pump is installed on left vacuum frame or right vacuum frame;Mold is located in airtight space, mold at least includes upper die and lower die, lower die is connected to the inner wall of right vacuum frame, upper die is located on one side of lower die, upper die approaches lower die to form cavity, and the top of cavity is provided with sprue;Ladle is rotatably connected to right vacuum frame, and ladle is located above sprue.

[0008] The further improved scheme of the utility model is that the first oil cylinder is connected to the rack, the left vacuum frame is connected to the power output end of the first oil cylinder, the rack is connected with a guide rail, and the left vacuum frame is slidingly matched with the guide rail.

[0009] The further improved scheme of the utility model is that the inner wall of the right vacuum frame is connected with a support plate, the support plate is connected with a support column, and the lower mold is connected to the other end of the support column.

[0010] The further improved scheme of the utility model is that the outer wall of the right vacuum frame is connected with a second oil cylinder, the piston rod of the second oil cylinder passes through the outer wall of the right vacuum frame and extends to the inner side, the piston rod of the second oil cylinder is sealingly connected with the right vacuum frame, the power output end of the second oil cylinder is connected with a push-pull plate, the push-pull plate is connected with a push-pull rod, the push-pull rod passes through the lower mold, and the upper mold is connected to one end of the push-pull rod.

[0011] The further improved scheme of the utility model is that the push-pull plate is connected with a sliding sleeve, the sliding sleeve is slidingly matched with the support column, the stripper plate is provided with a blind hole, the sliding sleeve is slidingly matched with the blind hole, the stripper plate is connected with a thimble, and the thimble is slidingly matched with the lower mold and extends into the cavity.

[0012] The further improved scheme of the utility model is that the pouring spoon is connected with a spoon handle, the spoon handle is rotationally and sealingly connected with the right vacuum frame, and the outer side end of the spoon handle is connected with a hand wheel.

[0013] The further improved scheme of the utility model is that the contact surface of the left vacuum frame and the right vacuum frame is provided with a sealing ring.

[0014] The further improved scheme of the utility model is that the left vacuum frame is connected with an organic glass quality window.

[0015] The utility model discloses the beneficial effect:

[0016] The aluminum alloy product vacuum gravity casting device disclosed by the utility model firstly pours the aluminum liquid into the pouring spoon before working, then moves the left vacuum frame to make it adhere to the right vacuum frame, then starts the vacuum pump to perform vacuum treatment on the vacuum frame through the connecting port, and rotates the pouring spoon to pour when the vacuum frame is in a vacuum state, so that the aluminum liquid is refined, the mold is also in a vacuum state, and the product does not appear common problems such as gas rolling and pinhole casting during the pouring process, thereby greatly improving the qualified rate of casting production.

[0017] The aluminum alloy product vacuum gravity casting device disclosed by the utility model is connected with an organic glass quality window on the left vacuum frame, so that the operating personnel can check the pouring condition through the window.

[0018] The aluminum alloy product vacuum gravity casting device disclosed by the utility model is connected with a thimble on the stripper plate, the thimble is slidingly matched with the lower mold and extends into the cavity, thereby facilitating the demolding of the product. DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the mold structure of this utility model.

[0021] In the diagram: 1-Frame, 101-Guide rail, 2-Left vacuum frame, 201-Viewing window, 3-Right vacuum frame, 301-Connecting port, 4-Pouring spoon, 401-Spoon handle, 402-Handwheel, 5-Mold, 501-Upper mold, 502-Lower mold, 503-Cavity, 504-Gate, 505-Support plate, 506-Support column, 507-Second oil cylinder, 508-Push-pull plate, 509-Push-pull rod, 510-Sliding sleeve, 511-Blind hole, 512-Ejector pin, 6-First oil cylinder. Detailed Implementation

[0022] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1: As Figure 1 , 2 As shown, a vacuum gravity casting device for aluminum alloy products includes a frame 1, a left vacuum frame 2, a right vacuum frame 3, a pouring ladle 4, and a mold 5. The right vacuum frame 3 is connected to the frame 1, and the left vacuum frame 2 is slidably fitted to the frame 1. A first hydraulic cylinder 6 drives the left vacuum frame 2 to contact the right vacuum frame 3 to form a sealed space. A connection port 301 for connecting a vacuum pump is installed on either the left vacuum frame 2 or the right vacuum frame 3. The mold 5 is located in the sealed space and includes at least an upper mold 501 and a lower mold 502. The lower mold 502 is connected to the inner wall of the right vacuum frame 3, and the upper mold 501 is located on one side of the lower mold 502. When the upper mold 501 approaches the lower mold 502, a cavity 503 is formed. A gate 504 is provided at the top of the cavity 503. The pouring ladle 4 is rotatably connected to the right vacuum frame 3 and is located above the gate 504.

[0024] The first hydraulic cylinder 6 is connected to the frame 1, the left vacuum frame 2 is connected to the power output end of the first hydraulic cylinder 6, the frame 1 is connected to the guide rail 101, and the left vacuum frame 2 is slidably fitted to the guide rail 101.

[0025] The inner wall of the right vacuum frame 3 is connected to a support plate 505, and a support column 506 is connected to the support plate 505. The lower mold 502 is connected to the other end of the support column 506.

[0026] The outer wall of the right vacuum frame 3 is connected with a second oil cylinder 507, the piston rod of the second oil cylinder 507 passes through the outer wall of the right vacuum frame 3 and extends to the inner side, the piston rod of the second oil cylinder 507 is sealingly connected with the right vacuum frame 3, the power output end of the second oil cylinder 507 is connected with a push-pull plate 508, the push-pull plate 508 is connected with a push-pull rod 509, the push-pull rod 509 passes through the lower die 502, and the upper die 501 is connected to one end of the push-pull rod 509.

[0027] The push-pull plate 508 is connected with a sliding sleeve 510, the sliding sleeve 510 is slidingly matched with the supporting column 506, the demolding plate is provided with a blind hole 511, the sliding sleeve 510 is slidingly matched with the blind hole 511, the demolding plate is connected with a ejector pin 512, and the ejector pin 512 is slidingly matched with the lower die 502 and extends into the cavity 503.

[0028] The pouring spoon 4 is connected with a spoon handle 401, the spoon handle 401 is rotationally and sealingly connected with the right vacuum frame 3, and the outer side end of the spoon handle 401 is connected with a hand wheel 402.

[0029] The contact surface of the left vacuum frame 2 and the right vacuum frame 3 is provided with a sealing ring.

[0030] The left vacuum frame 2 is connected with an organic glass quality viewing window 201.

[0031] The specific working principle of the utility model is as follows:

[0032] Before working, first pour the aluminum liquid into the pouring spoon 4, then drive the left vacuum frame 2 to be attached to the right vacuum frame 3 through the first oil cylinder 6, then start the vacuum pump to perform vacuum treatment on the vacuum frame through the connecting port 301, when the vacuum frame is in a vacuum state, rotate the pouring spoon 4, guide the aluminum liquid into the cavity 503 from the pouring gate 504 to perform casting, this process can refine the aluminum liquid, the mold 5 also forms a vacuum state, and the product does not appear common gas rolling and pinhole casting problems in the casting process, greatly improving the qualified rate of casting production; after casting is completed, the second oil cylinder 507 is extended, the push-pull plate 508 drives the push-pull rod 509 to move, the push-pull rod 509 drives the upper die 501 to move away from the lower die 502, when the sliding sleeve 510 moves to the limit position of the blind hole 511, the demolding plate is pushed to move, and the ejector pin 512 pushes the product to complete demolding.

[0033] The above embodiment is only for describing the technical concept and characteristics of the utility model, the purpose is to enable the person skilled in the art to understand the content of the utility model and to implement it, and cannot limit the protection scope of the utility model. Any equivalent transformation or modification according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. An apparatus for vacuum gravity casting of an aluminum alloy product, characterized by: The utility model provides a vacuum casting machine, including frame (1), left vacuum frame (2), right vacuum frame (3), ladle (4) and mould (5), right vacuum frame (3) is connected on frame (1), left vacuum frame (2) is slidably fitted in frame (1), first oil cylinder (6) drives left vacuum frame (2) and right vacuum frame (3) contact to form airtight space, and the connecting port (301) for communicating vacuum pump is installed on left vacuum frame (2) or right vacuum frame (3), the mould (5) is located in airtight space, and the mould (5) at least includes upper die (501) and lower die (502), and lower die (502) is connected to the inner wall of right vacuum frame (3), and upper die (501) is located on one side of lower die (502), and upper die (501) is close to lower die (502) and forms cavity (503), and the top of cavity (503) is equipped with gate (504), the ladle (4) is rotatably connected to right vacuum frame (3), and the ladle (4) is located above gate (504).

2. An apparatus for vacuum gravity casting of an aluminum alloy product as defined in claim 1, wherein: The first oil cylinder (6) is connected to the frame (1), and the left vacuum frame (2) is connected to the power output end of the first oil cylinder (6). The frame (1) is connected with a guide rail (101), and the left vacuum frame (2) is slidably fitted in the guide rail (101).

3. An apparatus for vacuum gravity casting of an aluminum alloy product as defined in claim 1, wherein: The inner wall of the right vacuum frame is connected with a support plate (505), the support plate (505) is connected with a support column (506), and the lower die (502) is connected to the other end of the support column (506). The outer wall of the right vacuum frame (3) is connected with a second oil cylinder (507), the piston rod of the second oil cylinder (507) penetrates through the outer wall of the right vacuum frame (3) and extends to the inner side, the piston rod of the second oil cylinder (507) is sealingly connected with the right vacuum frame (3), the power output end of the second oil cylinder (507) is connected with a push-pull plate (508), the push-pull plate (508) is connected with a push-pull rod (509), the push-pull rod (509) penetrates through the lower die (502), and the upper die (501) is connected to one end of the push-pull rod (509).

4. An apparatus for vacuum gravity casting of an aluminum alloy product as defined in claim 3 wherein: The push-pull plate (508) is connected with a sliding sleeve (510), the sliding sleeve (510) is slidably fitted in the support column (506), the stripper plate is provided with a blind hole (511), the sliding sleeve (510) is slidably fitted in the blind hole (511), the stripper plate is connected with a ejector pin (512), the ejector pin (512) is slidably fitted in the lower die (502) and extends into the cavity (503).

5. An apparatus for vacuum gravity casting of an aluminum alloy product as defined in claim 4 wherein: The ladle (4) is connected with a spoon handle (401), the spoon handle (401) is rotatably and sealingly connected with the right vacuum frame (3), and the outer side end of the spoon handle (401) is connected with a hand wheel (402).

6. An apparatus for vacuum gravity casting of an aluminum alloy product as defined in claim 1, wherein: The contact surfaces of the left vacuum frame (2) and the right vacuum frame (3) are provided with sealing rings.

7. An apparatus for vacuum gravity casting of an aluminum alloy product as defined in claim 1, wherein: The left vacuum frame (2) is connected with an organic glass window (201).

8. An apparatus for vacuum gravity casting of an aluminum alloy product as defined in claim 1, wherein: ​

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