Efficient casting tool for heavy-duty car air chamber support production

Abstract

The utility model relates to an efficient casting tool for producing an air chamber bracket of a heavy-duty car, which comprises a sand box, four casting models and a pouring gate are arranged in the sand box, the four casting models are symmetrically arranged in a horizontal plane, the four casting models are symmetrical about an X axis and a Y axis, a pouring gate is arranged at the central intersection point of the X axis and the Y axis, and the pouring gate is arranged in the sand box. The head part and the tail part of each casting model are respectively provided with a riser neck, the X axis and the Y axis are respectively and symmetrically provided with two risers, every two adjacent casting models share one riser, each riser is communicated with the riser necks of the two adjacent casting models, and pouring gates are arranged between all the risers and the pouring gate; the utility model discloses.

Description

Technical Field

[0001] The utility model relates to the technical field of casting, in particular to a high-efficiency casting tool used for the production of a heavy-duty automobile air chamber bracket. Background Art

[0002] The air chamber bracket is one of the main parts of the brake on the axle of a heavy-duty vehicle. After processing, it is used in conjunction with the brake piston, air chamber caliper, etc. The air chamber bracket is indirectly used for the braking of heavy-duty vehicles and is directly related to the safety performance of the vehicle. Therefore, the design standards of the air chamber bracket have very strict requirements.

[0003] At present, some heavy-duty vehicles have increasingly higher requirements for braking, so they need to produce a large braking effect instantly. A large-bore pneumatic caliper body and an air chamber bracket combination structure are generally used. The air chamber bracket introduced in this utility model patent is L-shaped, and the product structure is relatively complex, and the unit weight is relatively large, with a unit weight of 16kg. The conventional vertical production method of producing one mold and one piece is inefficient, and the product yield is about 45%, which is a low yield. At the same time, due to the large product quality and the different pressures of various parts of the vertical casting product, the sand expansion of each part of the product will be different, and the product consistency is poor. Summary of the invention

[0004] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide a high-efficiency casting tool for the production of heavy-duty automobile air chamber brackets.

[0005] The specific scheme of the utility model is: an efficient casting tool for the production of a heavy-duty automobile air chamber bracket, comprising a casting model and a runner, wherein four casting models are symmetrically arranged in a horizontal plane, the four casting models are symmetrically related to an X-axis and a Y-axis, a runner is arranged at the central intersection of the X-axis and the Y-axis, a riser neck is respectively arranged at the head and the tail of each casting model, two risers are symmetrically arranged on the X-axis and the Y-axis, a riser is shared between every two adjacent casting models, each riser is communicated with the riser necks of two adjacent casting models, and a runner is arranged between all the risers and the runner.

[0006] Furthermore, there are four runners, each of which consists of a first cross runner and a second cross runner, a flow blocking port is provided between the gate and each first cross runner, a first pressing edge is provided between the first cross runner and the second cross runner, and a second pressing edge is provided between the second cross runner and the corresponding riser.

[0007] Furthermore, the cross-sections of the first runner and the second runner are both trapezoidal.

[0008] Furthermore, the cross-sectional area of ​​the flow blocking port is smaller than the cross-sectional area of ​​the runner.

[0009] Compared with the prior art, the utility model has the following advantages: the technology of double cross runners and double pressure edges is adopted, and the slag and slag separation effects of the entire casting process are guaranteed on the basis of ensuring the stability of water inlet into the casting without using a filter screen; every two castings share a riser to ensure that the castings are fully compensated for shrinkage and have no shrinkage, and the consistency of the products is ensured while achieving a higher product yield and a faster production rhythm; mass production improves the stability of casting quality, reduces the labor intensity of workers, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0011] Figure 2 It is a three-dimensional schematic diagram of another viewing angle of the utility model;

[0012] Figure 3 It is the front view of the utility model;

[0013] In the figure: 1, casting model; 2, riser; 3, second pressure edge; 4, second cross runner; 5, first cross runner; 6, gate; 7, first pressure edge; 8, flow blocking port. DETAILED DESCRIPTION

[0014] See also Figure 1-3 The present embodiment is an efficient casting tool for the production of heavy-duty automobile air chamber brackets, including four casting models 1 and runners. The four casting models 1 are symmetrically arranged in a horizontal plane. The four casting models 1 are symmetrical about the X-axis and the Y-axis. A gate 6 is provided at the central intersection of the X-axis and the Y-axis. A riser 2 neck is provided at the head and tail of each casting model 1, two risers 2 are symmetrically provided on the X-axis and the Y-axis, one riser 2 is shared between every two adjacent casting models 1, each riser 2 is connected to the riser 2 necks of two adjacent casting models 1, and a runner is provided between all risers 2 and the gate 6.

[0015] In this embodiment, each air chamber bracket casting weighs 16 kg, and when four castings are poured, the total amount of molten iron is about 86 kg.

[0016] By setting the two castings to share a riser 2, the castings are fully compensated to achieve no shrinkage and have a high product yield rate of 74%. While achieving a high product yield rate and a fast production rhythm, the consistency of the products is ensured, the labor intensity of workers is reduced, and the production cost is reduced.

[0017] Furthermore, there are four runners, each of which is composed of a first cross runner 5 and a second cross runner 4, a flow blocking port 8 is provided between the gate 6 and each first cross runner 5, a first pressure edge 7 is provided between the first cross runner 5 and the second cross runner 4, and a second pressure edge 3 is provided between the second cross runner 4 and the corresponding riser 2.

[0018] The design of double runners and double pressure edges can effectively remove slag from the runner at this flow rate, thereby achieving the purpose of purifying molten iron and preventing slag eye defects from forming in the product.

[0019] Furthermore, the cross-sectional area of ​​the blocking port 8 is smaller than the cross-sectional area of ​​the runner.

[0020] The design of the flow blocking port 8 can effectively control the molten iron flow rate of the entire system. Each mold is poured for 16S and the molten iron volume is 86KG, so that the molten iron flow rate of the entire system is not too fast to cause sand flushing defects, nor too slow to cause the molten iron to cool down before being filled and form cold shut defects.

[0021] Furthermore, the cross sections of the first runner 5 and the second runner 4 are both trapezoidal.

Claims

1. An efficient casting tool for the production of heavy-duty automobile air chamber brackets, including a casting model and a runner, characterized by: There are four casting models symmetrically arranged in a horizontal plane. The four casting models are symmetrical about the X-axis and the Y-axis. A gate is arranged at the central intersection of the X-axis and the Y-axis. A riser neck is respectively arranged at the head and the tail of each casting model. Two risers are respectively symmetrically arranged on the X-axis and the Y-axis. One riser is shared between every two adjacent casting models. Each riser is connected with the riser necks of two adjacent casting models. A runner is arranged between all the risers and the gate.

2. The high-efficiency casting tool for producing a heavy-duty vehicle air chamber bracket according to claim 1 is characterized in that: There are four runners, each of which consists of a first horizontal runner and a second horizontal runner. A flow blocking port is provided between the gate and each first horizontal runner, a first pressing edge is provided between the first horizontal runner and the second horizontal runner, and a second pressing edge is provided between the second horizontal runner and the corresponding riser.

3. The high-efficiency casting tool for producing a heavy-duty vehicle air chamber bracket according to claim 2 is characterized in that: The cross sections of the first runner and the second runner are both trapezoidal.

4. The high-efficiency casting tool for producing a heavy-duty vehicle air chamber bracket according to claim 2 is characterized in that: The cross-sectional area of ​​the flow blocking port is smaller than the cross-sectional area of ​​the runner.

Images