Exhaust riser and low pressure aluminum subframe die

Abstract

The utility model relates to a vehicle frame die technical field, specifically is a kind of exhaust riser and low-pressure aluminum auxiliary frame die, including riser body, the riser cover plate being connected with the bottom end of riser body, the through-hole of being passed through inside riser body has, the riser cover plate is equipped with the top rod hole and several S-shaped exhaust grooves being passed through its upper and lower;The width of S-shaped exhaust groove is 0.2mm;The top of riser cover plate is equipped with the lower groove of opening downwards, S-shaped exhaust groove is located in lower groove, the depth of S-shaped exhaust groove in up-down direction is 3mm;The utility model can increase the area of exhaust hole by setting S-shaped exhaust groove, by controlling the width of exhaust groove, it can ensure that only gas passes, casting liquid cannot pass;By controlling the depth of S-shaped exhaust groove, gas can be discharged from S-shaped exhaust groove as soon as possible.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vehicle frame die technical field, concretely is a kind of exhaust riser and low-pressure aluminum auxiliary frame die. BACKGROUND

[0002] Low pressure casting is the casting method that liquid alloy is pressed into the mold cavity from bottom to top under the action of pressure, and solidified to obtain casting under the action of pressure;In the mold development process, excellent exhaust structure needs to be designed to ensure that the casting is filled, so that the casting with compact structure is obtained, but part of the riser will not be filled due to poor exhaust, resulting in casting defects;The exhaust riser of the existing low-pressure aluminum auxiliary frame die can only exhaust in the gap between the top rod hole and the top rod, resulting in poor exhaust and casting defects. SUMMARY

[0003] The main purpose of the utility model is to provide an exhaust riser and a low-pressure aluminum auxiliary frame die to solve the problem that the exhaust riser of the low-pressure aluminum auxiliary frame die in the prior art can only exhaust in the gap between the top rod hole and the top rod, resulting in poor exhaust and casting defects.

[0004] In order to achieve the above purpose, the utility model provides an exhaust riser, which comprises a riser body, a riser cover plate connected to the bottom end of the riser body, a through hole penetrating from top to bottom in the riser body, a top rod hole and a plurality of S-shaped exhaust grooves penetrating from top to bottom on the riser cover plate.

[0005] Further, the width of the S-shaped exhaust groove is 0.2mm.

[0006] Further, the top of the riser cover plate is provided with a downwardly open lower groove, and the S-shaped exhaust groove is located in the lower groove, and the depth of the S-shaped exhaust groove in the vertical direction is 3mm.

[0007] Further, the top of the riser cover plate is provided with a plurality of horizontal grooves, one end of the horizontal groove is communicated with the top rod hole, and the other end penetrates the side of the riser cover plate.

[0008] The utility model also provides a low-pressure aluminum auxiliary frame die, which comprises a die body, an installation hole penetrating the die body from top to bottom is arranged on the die body, and the exhaust riser described above is installed in the installation hole;The installation hole is sequentially provided with a riser body, a riser cover plate, a backing plate, a pressure ring and a fixed pressure plate from top to bottom;A top rod is movably connected in the top rod hole, and the backing plate is provided with a backing plate exhaust hole corresponding to the position of the S-shaped exhaust groove.

[0009] Further, gaps for exhaust are arranged between the riser cover plate, the backing plate, the pressure ring, the fixed pressure plate and the installation hole.

[0010] The utility model discloses a set up S -shaped exhaust groove, can increase the area of exhaust hole, through the control exhaust groove's width, can ensure that only gas passes, casting liquid can not pass through, through the control S -shaped exhaust groove's depth, can make gas from S -shaped exhaust groove as soon as possible exhaust.

[0011] The utility model discloses a set up horizontal groove, the gas in top rod hole can also exhaust through horizontal groove, has accelerated the exhaust speed of gas in top rod hole. BRIEF DESCRIPTION OF DRAWINGS

[0012] The drawings accompanying the specification provide further understanding of the present application, the illustrative embodiments of the present application and the description thereof serve to explain the present application, and do not constitute an improper limitation on the present application.

[0013] Figure 1 It is the structure schematic drawing of the venting riser in the embodiment;

[0014] Figure 2 It is the structure schematic drawing of the riser cover top in the embodiment;

[0015] Figure 3 It is the sectional structure schematic of low pressure aluminum auxiliary frame mould in the embodiment Figure 1 ;

[0016] Figure 4 It is the sectional structure schematic of low pressure aluminum auxiliary frame mould in the embodiment Figure 2 ;

[0017] Figure 5 It is the structure schematic drawing of the gasket plate in the embodiment;

[0018] In the drawing: 1, riser body;2, riser cover;201, through -hole;202, S -shaped exhaust groove;203, lower groove;204, horizontal groove;3, mould body;301, mounting hole;4, gasket plate;401, gasket plate hole one;402, gasket plate exhaust hole;5, pressure ring;6, fixed pressing plate;601, top rod hole;7, top rod. DETAILED DESCRIPTION

[0019] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0020] Venting riser embodiment

[0021] As Figures 1 to 3As shown, a venting riser includes a riser body 1 and a riser cover plate 2 connected to the bottom end of the riser body 1. The riser body 2 has a conical structure and annular reinforcing ribs are provided at the top and bottom of the riser body 2. The riser body 1 has a through hole 101 that runs through the top and bottom. The riser cover plate 2 has a top rod hole 201 that runs through the top and bottom and several S-shaped venting grooves 202.

[0022] The width of the S-shaped exhaust groove 202 is 0.2mm.

[0023] The top of the riser cover plate 2 is provided with an upward-facing lower groove 203, and an S-shaped vent groove 202 is located inside the lower groove 203. The depth of the S-shaped vent groove 202 in the vertical direction is 3mm.

[0024] The top of the riser cover plate 2 is provided with several horizontal grooves 204. One end of the horizontal groove 204 is connected to the top rod hole 201, and the other end passes through the side of the riser cover plate 2.

[0025] Example of a low-pressure aluminum subframe mold

[0026] like Figures 1-5 As shown, a low-pressure aluminum subframe mold includes a mold body 3. The mold body 3 has mounting holes 301 penetrating its top and bottom. The aforementioned vent riser is installed within the mounting holes 301. From top to bottom, the mounting holes 301 contain a riser body 1, a riser cover plate 2, a pad plate 4, a pressure ring 5, and a fixing plate 6. The mounting holes 301 are stepped holes, with the top of the riser body 1 abutting against the stepped portion within the mounting holes 301. The fixing plate 6 is used to hold the riser body 1 and the riser cover plate together. Plate 2, pad 4, and pressure ring 5 are pressed and fixed; the side of the riser body 1 is wrapped with heat insulation cotton to prevent the temperature of the riser body 1 from being quickly conducted to the mold, ensuring that the heat of the riser body 1 is concentrated and improving the riser feeding effect; the pad 4 is used to protect the riser cover plate 2 and prevent the riser cover plate 2 from being crushed; a push rod 7 is movably connected in the push rod hole 201, and the push rod 7 is used to push the cast product outward; the pad 4 is provided with a pad vent hole 402 corresponding to the position of the S-shaped vent groove 202.

[0027] The pad 4 is provided with a pad hole 401 for the top rod 7 to pass through, and the fixed pressure plate 6 is provided with a top rod hole 601 for the top rod 7 to pass through.

[0028] The riser cover 2, gasket 4, pressure ring 5 and fixing pressure plate 6 are all provided with gaps for venting between them and the mounting hole 301.

[0029] The above embodiments can increase the area of ​​the vent by setting an S-shaped vent groove. By controlling the width of the vent groove, it can be ensured that only gas can pass through and casting liquid cannot pass through. By controlling the depth of the S-shaped vent groove, gas can be discharged from the S-shaped vent groove as quickly as possible.

[0030] In the above embodiment, by setting a horizontal groove, the gas in the push rod hole can also be discharged through the horizontal groove, which accelerates the discharge speed of the gas in the push rod hole.

[0031] Existing low-pressure aluminum subframe molds can only release air through the gap between the ejector pin hole and the ejector pin. The cross-sectional area of ​​the vent is small, resulting in poor venting and casting defects. The yield of castings at the vent pin location is only 95%. The low-pressure aluminum subframe mold of the above embodiment can vent air not only between the ejector pin hole and the ejector pin, but also through an S-shaped vent groove. The gas passes through the S-shaped vent groove and the vent hole of the pad plate in sequence to be discharged outward. It can also vent air through a horizontal groove. The gas is discharged from the gap between the ejector pin hole and the ejector pin, enters the horizontal groove, and then enters the gap in the mounting hole for venting to be discharged. This makes the mold venting smooth, and the yield of castings at the vent pin location can reach 100%.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A venting riser, comprising a riser body (1) and a riser cover plate (2) connected to the bottom end of the riser body (1), wherein the riser body (1) has a through hole (101) extending through the top and bottom, characterized in that; The riser cover plate (2) is provided with a top rod hole (201) that runs through it from top to bottom and several S-shaped venting grooves (202).

2. The vent riser as described in claim 1, characterized in that, The width of the S-shaped exhaust groove (202) is 0.2 mm.

3. The vent riser as described in claim 1, characterized in that, The top of the riser cover plate (2) is provided with a downward-facing lower groove (203), and the S-shaped vent groove (202) is located in the lower groove (203). The depth of the S-shaped vent groove (202) in the vertical direction is 3mm.

4. The vent riser as described in claim 1, characterized in that, The top of the riser cover (2) is provided with several horizontal grooves (204), one end of which is connected to the top rod hole (201), and the other end passes through the side of the riser cover (2).

5. A low-pressure aluminum subframe mold, characterized in that, The mold body (3) is provided with mounting holes (301) that run through the top and bottom of the mold body (3). The mounting holes (301) are equipped with the venting riser as described in claim 1. The mounting holes (301) are provided with riser body (1), riser cover plate (2), pad plate (4), pressure ring (5), and fixing pressure plate (6) in sequence from top to bottom. The push rod hole (201) is movably connected with a push rod (7). The pad plate (4) is provided with a pad plate venting hole (402) corresponding to the position of the S-shaped venting groove (202).

6. The low-pressure aluminum subframe mold as described in claim 5, characterized in that, The riser cover (2), pad (4), pressure ring (5) and fixing pressure plate (6) are all provided with gaps for venting between them and the mounting hole (301).

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