Casting mold for large automobile brake calipers

Abstract

The utility model belongs to the technical field of casting of automobile parts, and particularly discloses a casting die for large automobile brake calipers, which comprises a caliper cavity and a pouring system, a riser A, a riser B and a riser C are arranged at intervals at a cylinder barrel of the caliper cavity, a filter screen is arranged at the joint of a main flow channel and a vertical flow channel, and the vertical flow channel is communicated with the main flow channel. The upper portion of the vertical runner is provided with a square water inlet A communicated with the riser A. The transverse runner is sequentially provided with a water inlet B communicated with the riser B, a water inlet D communicated with the caliper cavity and a water inlet C communicated with the riser C at intervals in the flowing direction of molten iron. The molten iron enters the water inlet A, then enters the water inlet B and the water inlet C and finally enters the water inlet A. The three risers are reasonably arranged to eliminate shrinkage porosity in the product, the feeding effect is achieved, it is guaranteed that no shrinkage porosity defect exists in the product, and the appearance quality of the product is guaranteed by filtering the molten iron through the filter screen and controlling the sequence of the molten iron entering the product.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automobile parts casting technology, and specifically discloses a casting mold for large automobile brake calipers. BACKGROUND

[0002] The automobile caliper is an important component in the automobile braking system, and its quality is directly related to the safety and braking performance of the automobile. The design of the large automobile caliper mold needs to meet the production requirements of high precision, high efficiency, long service life and low cost. In addition, the feasibility of mold processing, the convenience of use and maintenance and other factors also need to be considered. The large automobile caliper has higher requirements for materials and must be able to withstand high-strength pressure. The weight of the traditional automobile caliper is about 2-5Kg, and the weight of the large automobile brake caliper is about 9.5kg. The casting difficulty is greater, and whether the mold design is reasonable, the purity of the molten iron and the flow rate of the molten iron all play a crucial role in whether the product meets the requirements. SUMMARY

[0003] In order to solve the problems in the background art, the utility model discloses a casting mold for large automobile brake calipers, which filters the molten iron through the filter screen and controls the sequence of the molten iron entering the product interior to ensure the appearance quality of the product. The bottom pouring water inlet mode reduces the sand washing of the molten iron and improves the product quality.

[0004] To achieve the above-mentioned purposes, the utility model adopts the following technical solutions:

[0005] A casting mold for large automobile brake calipers, comprising a caliper cavity and a pouring system, a riser A, a riser B and a riser C are arranged at intervals at the cylinder of the caliper cavity, the pouring system comprises a main runner, a vertical runner and a horizontal runner, the main runner is arranged above the caliper cavity, the horizontal runner is arranged below the caliper cavity, one end of the main runner is in communication with the bottom of the sprue cup, the other end of the main runner is connected with the upper end of the vertical runner, the lower end of the vertical runner is connected with the feeding end of the horizontal runner, a water inlet A is arranged on the upper part of the vertical runner, the water inlet A is in communication with the riser A, a water inlet B, a water inlet D and a water inlet C are arranged at intervals along the flow direction of the molten iron on the horizontal runner, the water inlet B is in communication with the riser B, the water inlet D is in communication with the caliper cavity, and the water inlet C is in communication with the riser C.

[0006] Further, the casting mold for large automobile brake calipers is provided with a filter screen at the position where the main runner and the vertical runner meet.

[0007] Further, the casting mold for large automobile brake calipers, the height of the water inlet B and the water inlet C is the same, the height of the water inlet A is higher than the height of the water inlet B or the water inlet C, and the height of the water inlet D is lower than the height of the water inlet B and the water inlet C.

[0008] Further, the casting mold of the large automobile brake caliper, the filter screen is detachably connected with the main runner and the vertical runner through the filter screen seat.

[0009] Compared with the prior art, the casting mold of the large automobile brake caliper has the beneficial effects that:

[0010] The casting mold of the large automobile brake caliper, the filter screen is detachably connected with the main runner and the vertical runner through the filter screen seat. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a front view structural schematic diagram of the casting mold of the large automobile brake caliper of the utility model;

[0012] In the above figure: 1 - sprue cup; 2 - main runner; 3 - filter screen; 4 - water inlet A; 5 - water inlet B; 6 - vertical runner; 7 - horizontal runner; 8 - water inlet D; 9 - caliper cavity; 10 - water inlet C; 11 - riser C; 12 - riser B; 13 - riser A. DETAILED DESCRIPTION

[0013] In order to better understand the utility model, the contents of the utility model are further illustrated below in combination with embodiments, but the contents of the utility model are not limited to the following embodiments only.

[0014] In combination with the drawings Figure 1The utility model relates to a kind of casting mould of large automobile brake caliper, the casting mould of this caliper is divided into vertical parting, cylinder head and cylinder back are arranged on two mold plates separately, the size of the caliper is 295*163*103mm, it can be arranged on a mould on DISA-231-B production line mould (mold plate size 650*525mm), the casting mould of large automobile brake caliper includes caliper cavity 9 and pouring system, riser A13, riser B12 and riser C11 are arranged at the cylinder barrel of the caliper cavity 9, the pouring system includes main runner 2, vertical runner 6 and horizontal runner 7, the main runner 2 is arranged above the caliper cavity 9, the horizontal runner 7 is arranged below the caliper cavity 9, one end of main runner 2 is communicated with the bottom of sprue cup 1, the other end of main runner 2 is connected with the upper end of vertical runner 6, the lower end of vertical runner 6 is connected with the feeding end of horizontal runner 7, water inlet A4 is arranged on the upper portion of vertical runner 6, water inlet A4 is communicated with riser A13, water inlet B5, water inlet D8 and water inlet C10 are sequentially and spacedly arranged on horizontal runner 7 along the flow direction of molten iron, water inlet B5 is communicated with riser B12, water inlet D8 is communicated with caliper cavity 9, water inlet C10 is communicated with riser C11, when working, molten iron enters horizontal runner 7 through main runner 2 and vertical runner 6 in sequence, molten iron in horizontal runner 7 enters water inlet D8 first, then enters water inlet B5 and water inlet C10, and finally enters water inlet A4. Molten iron in water inlet D8 directly flows into the inside of caliper cavity 9 by bottom pouring, molten iron in water inlet B5 flows into the inside of caliper cavity 9 through riser B12, molten iron in water inlet C10 flows into the inside of caliper cavity 9 through riser C11, molten iron in water inlet A4 flows into the inside of caliper cavity 9 through riser A13, by analyzing the wall thickness of product, three pouring risers are arranged at the cylinder barrel part, the internal porosity of product is eliminated by the reasonable arrangement of three risers, the feeding effect is achieved, the internal porosity defect of product is ensured, especially the zero defect of product in cylinder sealing area is ensured, and the bottom pouring water inlet mode is designed, the sand washing of molten iron is reduced, the sequence of molten iron entering the inside of product is controlled to ensure the appearance quality of product.

[0015] As an optional design, preferably, the casting mould of large automobile brake caliper is provided with filter screen 3 at the position where main runner 2 and vertical runner 6 meet, slag holes in molten iron are filtered out through filter screen 3, and the purity of molten iron is ensured.

[0016] As an optional design, preferably, the height of water inlet B5 and water inlet C10 is the same, the height of water inlet A4 is higher than the height of water inlet B5 or water inlet C10, and the height of water inlet D8 is lower than the height of water inlet B5 and water inlet C10, by setting the height of water inlet A4, water inlet B5, water inlet D8 and water inlet C10, the sequence of molten iron entering the inside of product is controlled, and the appearance quality of product is ensured.

[0017] As an optional design, the filter screen 3 is detachably connected with the main runner 2 and the vertical runner 6 through the filter screen seat, and the filter screen 3 can be conveniently replaced when the filter screen 3 needs to be replaced after long-term use.

[0018] The working process of the utility model is as follows:

[0019] During work, the molten iron enters the main runner 2 through the pouring cup 1, the molten iron in the main runner 2 is filtered through the filter screen 3 and then enters the horizontal runner 7 through the vertical runner 6, the molten iron preferentially enters the water inlet D8, then enters the water inlet B5 and the water inlet C10, and finally enters the water inlet A4, the molten iron in the water inlet D8 directly flows into the inside of the caliper cavity 9 through bottom pouring, the molten iron in the water inlet B5 flows into the inside of the caliper cavity 9 through the riser B12, the molten iron in the water inlet C10 flows into the inside of the caliper cavity 9 through the riser C11, the molten iron in the water inlet A4 flows into the inside of the caliper cavity 9 through the riser A13, through the analysis of the product wall thickness, three pouring risers are arranged at the cylinder part, the internal shrinkage of the product is eliminated through the reasonable arrangement of the three risers, the feeding effect is achieved, the internal shrinkage defect of the product is ensured, especially the product zero defect in the cylinder sealing area is ensured, the bottom pouring water inlet mode is designed, the sand washing of the molten iron is reduced, in addition, the molten iron is filtered through the filter screen and the order of the molten iron entering the inside of the product is controlled to ensure the appearance quality of the product and improve the product quality.

[0020] The above description is only the application implementation mode of the utility model, but the protection scope of the utility model is not limited to this, the utility model cannot be limited by this to limit the right scope of the utility model, any equivalent change according to the technical scheme of the utility model should be covered in the protection scope of the utility model.

Claims

1. A casting mold for large automotive brake calipers, comprising a caliper cavity and a gating system, characterized in that The cylinder of the caliper cavity is provided with a riser A, a riser B and a riser C at intervals, the pouring system comprises a main runner, a vertical runner and a horizontal runner, the main runner is arranged above the caliper cavity, the horizontal runner is arranged below the caliper cavity, one end of the main runner is communicated with the bottom of the sprue cup, the other end of the main runner is connected with the upper end of the vertical runner, the lower end of the vertical runner is connected with the feeding end of the horizontal runner, a water inlet A is arranged on the upper part of the vertical runner and communicated with the riser A, a water inlet B, a water inlet D and a water inlet C are arranged on the horizontal runner along the flow direction of the molten iron at intervals, the water inlet B is communicated with the riser B, the water inlet D is communicated with the caliper cavity, and the water inlet C is communicated with the riser C.

2. The casting mold for large automobile brake calipers according to claim 1, characterized in that: A filter screen is arranged at the position where the main runner and the vertical runner meet.

3. A casting mold for large automotive brake calipers according to claim 1 or 2, characterized in that: The height of the water inlet B and the water inlet C is the same, the height of the water inlet A is higher than that of the water inlet B or the water inlet C, and the height of the water inlet D is lower than that of the water inlet B and the water inlet C.

4. The casting mold for large automobile brake calipers according to claim 3, characterized in that: The filter screen is detachably connected with the main runner and the vertical runner through a filter screen seat.

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