CN214768742U

CN214768742U - Shrinkage and looseness prevention pouring mold for brake disc

Info

Publication number: CN214768742U
Application number: CN202121315258.2U
Authority: CN
Inventors: 张克样; 张复兴
Original assignee: Longkou Tiangong Machinery Parts Co ltd
Current assignee: Longkou Tiangong Machinery Parts Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-11-19
Anticipated expiration: 2031-06-11

Abstract

The utility model belongs to the technical field of the brake disc, concretely relates to shrinkage porosity prevention pouring mould for brake disc, including last mould, bed die and psammitolite, go up and all be provided with the inner chamber in mould and the bed die, the psammitolite is located the inner chamber of bed die, go up the mould, bed die and psammitolite enclose into the die cavity, it is provided with pours the mouth to go up the mould top, pours the pouring passageway and the pouring chamber intercommunication that the mouth passes through the inside setting of last mould, the pouring chamber is located mould inner chamber top, and pouring chamber bottom is provided with a plurality of pouring mouths that communicate with last mould inner chamber, be provided with the buffer board of downward sloping in the pouring passageway. When using, pour from pouring the mouth, the molten iron gets into the pouring passageway, cushions under the effect of buffer board, prevents the turbulent flow, the phenomenon of splashing, prevents that the air from staying and causing gas pocket, shrinkage porosity scheduling problem in the die cavity, then the molten iron flows into the pouring intracavity, evenly flows into the die cavity from a plurality of pouring mouths that pouring chamber bottom set up, guarantees to annotate the material evenly, guarantees brake disc foundry goods quality.

Description

Shrinkage and looseness prevention pouring mold for brake disc

Technical Field

The utility model belongs to the technical field of the brake disc, concretely relates to mould is pour to shrink pine is prevented to brake disc.

Background

The brake disc is simply a round disc, the bicycle rotates when running, the brake calipers clamp the brake disc to generate braking force, and the brake calipers clamp the brake disc to play a role in reducing speed or stopping when stepping on the brake. The brake disc has good braking effect and is easier to maintain than a drum brake.

During production of a brake disc, the brake disc is generally cast and molded through a mold, in the casting mold in the prior art, during casting, molten iron is easy to generate turbulence, splash, uneven material injection and the like, so that air is left in a cavity to cause the problems of air holes, shrinkage porosity and the like, and finally, the quality of a brake disc casting is reduced. Secondly, the casting mold in the prior art has poor cooling effect and long cooling time, and influences the forming speed of the brake disc in the mold cavity, so that the production efficiency of the brake disc is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the prior art, the utility model provides a casting mould for preventing the shrinkage and looseness of a brake disc, which can effectively avoid the phenomena of turbulent flow, splashing, uneven material injection and the like of molten iron in the casting process, prevent air from remaining in a cavity to cause the problems of air holes, shrinkage and looseness and ensure the quality of a casting of the brake disc; and the cooling effect is good, the forming speed of the brake disc in the die cavity is accelerated, and the production efficiency of the brake disc is ensured.

The technical scheme of the utility model is realized like this:

the utility model provides a mould is pour in shrink pine is prevented to brake disc, includes mould, bed die and psammitolite, all be provided with the inner chamber in last mould and the bed die, the psammitolite is located the inner chamber of bed die, go up mould, bed die and psammitolite and enclose into the die cavity, it is provided with the mouth of pouring to go up the mould top, the mouth of pouring is through the inside pouring passageway and the pouring chamber intercommunication that sets up of last mould, the pouring chamber is located mould inner chamber top, just pouring chamber bottom is provided with a plurality of and the pouring gate of last mould inner chamber intercommunication, be provided with the buffer board of downward sloping in the pouring passageway.

When using, at first place the psammitolite in the inner chamber of bed die, go up the mould and carry out the compound die with the bed die, then pour from pouring the mouth, the molten iron gets into the pouring passageway, cushion under the effect of buffer board, prevent the turbulent flow, the phenomenon of splashing, prevent that the air from staying in the die cavity and causing the gas pocket, the shrinkage porosity scheduling problem, then the molten iron flows into the pouring intracavity, evenly flows into the die cavity from a plurality of pouring spouts that the pouring chamber bottom set up, it is even to guarantee to annotate the material, guarantee brake disc casting quality.

Preferably, the pouring opening is in a funnel shape with a wide upper part and a narrow lower part, so that pouring is convenient.

Preferably, the pouring cavity is in an inverted funnel shape with a narrow top and a wide bottom, so that the material is uniformly poured, and the quality of a brake disc casting is ensured.

Preferably, heat preservation layers are arranged outside the pouring opening, the pouring channel and the pouring cavity, and molten iron is prevented from being cooled.

Preferably, the inside hollow cooling chamber that is provided with of bed die, be provided with water inlet and delivery port on the cooling chamber, the cooling effect is good for the shaping speed of brake disc in the mould die cavity, guarantees the production efficiency of brake disc.

Preferably, a baffling baffle is arranged in the cooling cavity to ensure the cooling effect.

Advantageous effects

The utility model provides a brake disc shrinkage and looseness prevention pouring mold, the pouring mold of the utility model can effectively avoid the phenomena of turbulent flow, splashing, uneven material injection and the like of molten iron in the pouring process, prevent air from remaining in a cavity to cause the problems of air holes, shrinkage and looseness and ensure the quality of a brake disc casting; and the cooling effect is good, the forming speed of the brake disc in the die cavity is accelerated, and the production efficiency of the brake disc is ensured.

Drawings

Fig. 1 is a schematic structural view of a brake disc shrinkage-proof casting mold according to embodiment 1 of the present invention;

the casting mold comprises an upper mold 1, a lower mold 2, a sand core 3, a pouring port 4, a pouring channel 5, a pouring cavity 6, a buffer plate 7, a cooling cavity 8, a baffling baffle 9 and a pouring port 10.

Detailed Description

In order to deepen the utility model discloses an understand, it is right below to combine example and drawing the utility model discloses brake disc is prevented contracting pine and is pour mould and do further elaboration, and this embodiment only is used for explaining the utility model discloses, do not constitute the restriction to the scope of protection of the utility model discloses.

Example 1

As shown in figure 1, the shrinkage-loosening-preventing pouring mold for the brake disc comprises an upper mold 1, a lower mold 2 and a sand core 3, inner cavities are formed in the upper mold and the lower mold, the sand core is located in the inner cavity of the lower mold, a molding cavity is enclosed by the upper mold, the lower mold and the sand core, a pouring opening 4 is formed in the top of the upper mold, the pouring opening is communicated with a pouring cavity 6 through a pouring channel 5 formed in the upper mold, the pouring cavity is located above the inner cavity of the upper mold, a plurality of pouring openings 10 communicated with the inner cavity of the upper mold are formed in the bottom of the pouring cavity, and a buffer plate 7 inclined downwards is arranged in the pouring channel.

The pouring opening is in a funnel shape with a wide upper part and a narrow lower part, and pouring is convenient.

The pouring cavity is in an inverted funnel shape with a narrow top and a wide bottom, so that the material injection is uniform, and the quality of a brake disc casting is ensured.

And heat insulation layers are arranged outside the pouring opening, the pouring channel and the pouring cavity, so that molten iron is prevented from being cooled.

The inside hollow cooling chamber 8 that is provided with of bed die, be provided with water inlet and delivery port on the cooling chamber, the cooling effect is good for the shaping speed of brake disc in the mould die cavity, guarantees the production efficiency of brake disc.

A baffling baffle 9 is arranged in the cooling cavity to ensure the cooling effect.

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

Claims

1. The utility model provides a mould is pour in pine of contracting is prevented to brake disc, includes mould, bed die and psammitolite, all be provided with the inner chamber in going up mould and the bed die, the psammitolite is located the inner chamber of bed die, go up mould, bed die and psammitolite and enclose into die cavity, its characterized in that: the top of the upper die is provided with a pouring opening, the pouring opening is communicated with a pouring cavity through a pouring channel arranged inside the upper die, the pouring cavity is located above an inner cavity of the upper die, the bottom of the pouring cavity is provided with a plurality of pouring openings communicated with the inner cavity of the upper die, and a buffer plate inclined downwards is arranged in the pouring channel.

2. The shrinkage-proof casting mold for the brake disc according to claim 1, wherein: the pouring opening is in a funnel shape with a wide upper part and a narrow lower part.

3. The shrinkage-proof casting mold for the brake disc according to claim 2, wherein: the pouring cavity is in an inverted funnel shape with a narrow upper part and a wide lower part.

4. The brake disc shrinkage-proof casting mold according to claim 3, wherein: and heat insulation layers are arranged outside the pouring opening, the pouring channel and the pouring cavity.

5. The shrinkage-proof casting mold for the brake disc according to claim 1, wherein: the lower die is internally provided with a hollow cooling cavity, and the cooling cavity is provided with a water inlet and a water outlet.

6. The shrinkage-proof casting mold for the brake disc of claim 5, wherein: and a baffling baffle is arranged in the cooling cavity.