CN218395817U

CN218395817U - Two brake disc gating system

Info

Publication number: CN218395817U
Application number: CN202123367108.9U
Authority: CN
Inventors: 高超; 段田林; 尤瀚翔
Original assignee: Yantai Hongtian Auto Parts Co ltd
Current assignee: Yantai Hongtian Auto Parts Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2023-01-31
Anticipated expiration: 2031-12-29

Abstract

The utility model relates to a biplate brake disc gating system, including last sand mould and lower sand mould, go up the sand mould with be equipped with the die cavity that is used for forming the biplate brake disc down between the sand mould, it is equipped with the sprue on the sand mould to go up, the lower extreme intercommunication of sprue has the cross gate, the cross gate through the ingate with the die cavity intercommunication, die cavity circumference is equipped with the core, the runner setting of ingate is in the below of core, it is protruding to be equipped with downward convex annular on the core, the annular is protruding along die cavity circumference sets up. Through set up annular protrusion on the core, the ingate molten metal forms the recess in this department, and this recess just becomes the stress concentration groove that sets up along work piece circumference after the pouring is accomplished, and when foundry goods and watering roll fast in the cylinder, this department forms great concentrated stress to realize watering and work piece in stress concentration groove department separation, effectively avoid forming remaining burr on the work piece excircle, improve cast quality and machining efficiency.

Description

Two brake disc gating systems

Technical Field

The utility model relates to a casting technical field, concretely relates to biplate brake disc gating system.

Background

The brake disc, namely the brake disc, is made of alloy steel and is fixed on the wheel, and when a vehicle treads a brake in the running process, the brake calipers clamp the brake disc to play a role in reducing the speed or stopping the vehicle. The rotary elements of the brake disc can be divided into drum type and disc type. The differences between them are: the rotary element in the drum type brake disc friction pair is a brake drum, and the cylindrical surface of the rotary element is a working surface, so the rotary element is low in cost and high in absolute braking force, and is applied to rear wheels of small cars, trucks and buses needing large braking force, but the rotary element is high in abrasion rate and not suitable for high-speed small vehicles; the rotating element in the friction pair of the disc brake disc is a disc-shaped brake disc, the end face of the disc-shaped brake disc is used as a working surface, and the disc-shaped brake disc has better reactivity and stability, good heat dissipation performance, simple structure and convenient maintenance and replacement, and is widely applied to high-speed small vehicles.

The double-disc brake disc is used as one disc brake disc, and has several air ducts leading to the center of circle. The double-disc brake has high requirements on dimensional accuracy and dynamic balance, and does not allow any casting defects. When the existing double-disc is cast, an ingate is arranged on the excircle of the double-disc, and after a sprue is disconnected, burrs are remained at the ingate of the double-disc, so that the double-disc has casting defects and the processing efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses there is the problem of casting defect at runner department to biplate brake disc among the prior art, provide a biplate brake disc gating system.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a biplate brake disc gating system, includes sand mould and lower sand mould, go up the sand mould with be equipped with the die cavity that is used for forming the biplate brake disc between the sand mould down, it is equipped with the sprue to go up on the sand mould, the lower extreme intercommunication of sprue has the cross gate, the cross gate through the ingate with the die cavity intercommunication, die cavity circumference is equipped with the core, the runner setting of ingate is in the below of core, it is protruding to be equipped with the downward convex annular on the core, the annular is protruding along die cavity circumference sets up.

The utility model has the advantages that: the core print is arranged along the circumferential direction of the cavity, and the core print and the upper and lower molded surfaces jointly form a closed cavity to form the appearance of the casting. Through set up annular protrusion on the core, the ingate molten metal forms the recess in this department, and this recess just becomes the stress concentration groove that sets up along work piece circumference after the pouring is accomplished, and when foundry goods and watering roll fast in the cylinder, this department forms great concentrated stress to realize watering and work piece in stress concentration groove department separation, effectively avoid forming remaining burr on the work piece excircle, improve cast quality, avoid the casting defect, reduce the processing cost.

On the basis of the technical scheme, the utility model discloses a reach the stability of convenience and equipment of using, can also make following improvement to foretell technical scheme:

further, the width of the annular bulge is 1.5mm-2.5mm, and the height of the annular bulge is 0.8mm-1.2mm.

The casting system has the advantages that the annular bulges with corresponding sizes are arranged according to the size of the double-disc brake disc and the flowing speed of molten metal, and the application range of the casting system is widened.

Further, the annular bulge is 2mm in width and 1mm in height.

Adopt above-mentioned further technical scheme's beneficial effect be, can satisfy and form the end groove on the ingate, easy shaping simultaneously reduces the bellied processing degree of difficulty of annular.

Further, the cross gate comprises a first cross gate and a second cross gate which are communicated, the first cross gate is arranged on the lower sand mold, the second cross gate is arranged on the upper sand mold, the first cross gate and the second cross gate are arranged in a vertically staggered mode, and the first cross gate is communicated with the straight gate.

The beneficial effects of adopting above-mentioned further technical scheme are that, the molten metal passes through in the sprue gets into horizontal runner one, then two flows to the ingate through the horizontal runner, has the cushioning effect to the velocity of flow of molten metal, reduces the direct impact of molten metal to the casting mould, guarantees the shaping quality, reducible trend that produces the gas pocket on biplate brake disc simultaneously, guarantees casting quality, reduction in production cost.

Furthermore, a filter screen is arranged at the joint of the first cross gate and the second cross gate.

The beneficial effects of adopting above-mentioned further technical scheme are that, impurity, slag etc. in the filterable molten metal of filter screen avoid getting into the die cavity, guarantee the casting quality of biplate brake disc, improve the yield.

Furthermore, a groove is formed in the first cross gate and is located below the straight gate.

Adopt above-mentioned further technical scheme's beneficial effect is, groove structure plays the effect of storage, buffering to the molten metal, reduces and produces the bubble in flowing, avoids forming the gas pocket on the casting, deposits through impurity, the slag in groove structure to the molten metal simultaneously and filters, guarantees the casting quality of biplate brake disc.

Furthermore, a pouring cup is arranged above the straight pouring channel and is in a funnel shape.

Adopt above-mentioned further technical scheme's beneficial effect to be, the pouring basin can prevent that the molten metal from splashing and overflowing, makes things convenient for the pouring.

Drawings

FIG. 1 is a schematic view of a gating system of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a top view of the gating system of the present invention;

fig. 4 is a schematic view of the cast molding of the double-disc brake disc of the present invention.

The reference numbers are recorded as follows: 1. putting a sand mold; 2. putting a sand mold; 3. a sprue; 4. a first horizontal runner; 5. a second cross gate, 6 and a filter screen; 7. an inner pouring channel; 8. a core print; 9. an annular projection; 10. a cavity; 11. a sand core; 12. a pouring cup; 13. a double-disc brake.

Detailed Description

The principles and features of the present invention will be described with reference to the drawings, which are provided for illustration only and are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, the utility model discloses a biplate brake disc gating system, including last sand mould 1 and lower sand mould 2, go up sand mould 1 with be equipped with the die cavity 10 that is used for forming biplate brake disc 13 down between sand mould 2, it is equipped with sprue 3 on the sand mould 1 to go up, the lower extreme intercommunication of sprue 3 has the cross gate, the cross gate through the ingate 7 with die cavity 10 intercommunication, be equipped with a plurality of psammitolite 11 that are used for forming the wind channel on the die cavity 10, die cavity 10 circumference is equipped with core 8, the runner setting of ingate 7 is in the below of core 8, be equipped with downward convex annular arch 9 on the core 8, annular arch 9 along die cavity 10 circumference sets up. After pouring, a stress concentration groove is formed at the annular bulge 9, so that the ingate is separated from the workpiece at the stress concentration groove, thereby ensuring that no flash or burr is formed on the outer circumference of the double-disc brake disc 13, improving the casting quality of the double-disc brake disc 13 and avoiding casting defects.

The width of the annular bulge 9 is 1.5mm-2.5mm, and the height is 0.8mm-1.2mm. The annular bulge 9 with proper width and height is selected according to the casting condition of the double-disc brake 13, so that the application range of the gating system is enlarged.

In a preferred embodiment, the annular projection 9 has a width of 2mm and a height of 1mm. Annular protrusion 9 is the arc to guarantee that the molten metal flows gently, avoid producing the peak.

The cross gate comprises a first cross gate 4 and a second cross gate 5 which are communicated with each other, the first cross gate 4 is arranged on the lower sand mold 2, the second cross gate 5 is arranged on the upper sand mold 1, the first cross gate 4 and the second cross gate 5 are arranged in a vertically staggered mode, a filter screen 6 is arranged at the joint of the first cross gate 4 and the second cross gate 5, and the first cross gate 4 is communicated with the sprue 3.

And a groove is formed in the first cross gate 4 and is positioned below the sprue 3. The groove is in an inverted trapezoid shape with a wide upper part and a narrow lower part.

A sprue cup 12 is arranged above the straight pouring gate 3, and the sprue cup 12 is funnel-shaped.

Optionally, a plurality of layers of filter screens 6 may be provided according to the content of impurities in the molten metal and the flow speed of the molten metal.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a two brake disc gating system, includes sand mould (1) and lower sand mould (2), its characterized in that, go up sand mould (1) with be equipped with die cavity (10) that are used for forming two brake discs (13) down between sand mould (2), it is equipped with sprue (3) on sand mould (1), the lower extreme intercommunication of sprue (3) has the cross gate, the cross gate through ingate (7) with die cavity (10) intercommunication, die cavity (10) circumference is equipped with core (8), the runner setting of ingate (7) is in the below of core (8), be equipped with convex annular arch (9) down on core (8), annular arch (9) along die cavity (10) circumference sets up.

2. Two-disc brake gating system according to claim 1, wherein the annular protrusion (9) has a width of 1.5mm to 2.5mm and a height of 0.8mm to 1.2mm.

3. Two-disc brake gating system according to claim 1 or 2, wherein the annular protrusion (9) has a width of 2mm and a height of 1mm.

4. The two-piece brake disc gating system according to claim 1 or 2, wherein the cross gate includes a first cross gate (4) and a second cross gate (5) that are in communication with each other, the first cross gate (4) is disposed on the lower sand mold (2), the second cross gate (5) is disposed on the upper sand mold (1), the first cross gate (4) and the second cross gate (5) are staggered up and down, and the first cross gate (4) is in communication with the sprue (3).

5. The two-piece brake disc gating system according to claim 4, wherein a filter screen (6) is provided at the junction of the first runner (4) and the second runner (5).

6. Two-brake disc gating system according to claim 5, wherein the first cross runner (4) is provided with a groove located below the sprue (3).

7. System according to claim 1 or 5 or 6, characterized in that a pouring cup (12) is provided above said sprue (3), said pouring cup (12) being of the funnel type.