A casting gating system for an engine block

Abstract

The application discloses a casting gating system of an engine cylinder body and relates to the technical field of casting equipment. The application comprises a pair of casting molds; a plurality of side overflow channels are vertically connected to the opposite outer side walls of the two casting molds, and a plurality of exhaust channels are vertically connected to the upper parts of the casting molds side by side; the two casting molds are connected through a pair of intermediate overflow channels; a straight sprue is vertically arranged between the two intermediate overflow channels; a pair of iron liquid purifiers is symmetrically connected to the lower end of the straight sprue; an iron liquid conveying channel is vertically connected to the lower part of the iron liquid purifier; the lower ends of the two iron liquid conveying channels are connected through a cross sprue; upper layer gates are connected to the opposite two side walls of the iron liquid conveying channel; and intermediate gates and bottom layer gates are connected to the opposite two side walls of the cross sprue. The application can make the filling process stable and the temperature distribution balanced, realizes zero defects of the casting in terms of air holes and sand washing, and has high market application value.

Description

Technical Field

[0001] This invention belongs to the field of casting equipment technology, and in particular relates to a casting and gating system for an engine cylinder block. Background Technology

[0002] Modern engine blocks, due to their unique structure and inherent functional requirements, are products with high quality requirements. To accelerate production, they are generally manufactured using a casting process.

[0003] Currently, existing engine block casting gating systems typically employ multiple gates arranged side-by-side on a runner, with molten iron delivered to these gates via sprues and runners. This structure leads to problems such as improper distribution of molten iron in the mold and poor filling efficiency, and may also cause defects in the casting, such as porosity and sandblasting. Therefore, there is an urgent need to research and develop a new engine block casting gating system to address these issues. Summary of the Invention

[0004] The present invention provides a casting and gating system for engine cylinder blocks, the purpose of which is to solve the technical problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a casting and gating system for an engine cylinder block, comprising a pair of symmetrically arranged casting molds; multiple side overflow channels are vertically connected to the opposite outer walls of both casting molds, and multiple exhaust channels are vertically connected to the upper part of each casting mold; the two casting molds are connected by a pair of parallel intermediate overflow channels; a sprue is vertically arranged between the two intermediate overflow channels; a pair of molten iron purifiers are symmetrically connected to the lower end of the sprue; a molten iron conveying channel is vertically connected to the lower part of each molten iron purifier; the lower ends of the two molten iron conveying channels are connected by a gating system; upper gates are connected to the opposite side walls of the molten iron conveying channels; the upper gates are connected to the upper part of the casting molds; intermediate gates and bottom gates are connected to the opposite side walls of the gating system; the intermediate gates are connected to the middle part of the casting molds; and the bottom gates are connected to the lower part of the casting molds.

[0007] As a preferred embodiment of the present invention, the lower parts of the two casting molds are connected by a pair of side-by-side support columns; the two support columns are located on opposite sides of the runner.

[0008] As a preferred embodiment of the present invention, the intermediate overflow channel is connected to the upper part of the casting mold.

[0009] As a preferred embodiment of the present invention, a Y-shaped structure is formed between the intermediate gate and the bottom gate.

[0010] The present invention has the following beneficial effects:

[0011] 1. This invention, through the design of a three-layer gating system, can effectively enhance the temperature field of isolated high points. High-temperature molten iron enters the cavity of the casting mold through this gating system. With the reasonable arrangement of the molten iron purifier, side overflow channel, middle overflow channel and venting channel, the filling process is stable and the temperature distribution is balanced. The casting achieves zero defects in terms of porosity and sand removal, and has high market application value.

[0012] 2. This invention pours molten iron into a sprue, filters it through an iron purifier, and then flows into an iron delivery channel and a horizontal sprue. The molten iron is then delivered to the casting mold through an upper gate, an intermediate gate, and a bottom gate. This effectively improves the filling effect of the casting mold and ensures a more even temperature distribution within the mold, thus avoiding defects such as porosity and sand erosion in the casting.

[0013] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the casting and gating system for an engine cylinder block according to the present invention.

[0016] Figure 2 for Figure 1 The main view of the structure.

[0017] Figure 3 This is a schematic diagram of the connection between the casting mold, the intermediate overflow channel, and the support column of the present invention.

[0018] Figure 4 This is a schematic diagram of the casting mold of the present invention.

[0019] Figure 5 This is a schematic diagram of the connection between the straight runner and the horizontal runner of the present invention.

[0020] Figure 6 for Figure 5 The main view of the structure.

[0021] Figure 7 for Figure 5 A structural side view.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1- Casting mold, 2- Side overflow channel, 3- Venting channel, 4- Middle overflow channel, 5- Sprue, 6- Molten iron purifier, 7- Molten iron conveying channel, 8- Horizontal sprue, 9- Upper gate, 10- Middle gate, 11- Bottom gate, 12- Support column. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Specific implementation examples:

[0026] Please see Figure 1-7 As shown, the present invention is a casting system for an engine cylinder block, comprising a pair of symmetrically arranged casting molds 1; the casting molds 1 are of conventional structure in the art; multiple side overflow channels 2 are vertically connected to the opposite outer side walls of both casting molds 1, and multiple exhaust channels 3 are vertically connected to the upper part of the casting molds 1; the side overflow channels 2 and exhaust channels 3 are both of conventional structure in the art; the two casting molds 1 are connected by a pair of parallelly arranged intermediate overflow channels 4; the intermediate overflow channels 4 are connected to the upper part of the casting molds 1; the intermediate overflow channels 4 are of conventional structure in the art; a conventional sprue 5 is vertically arranged between the two intermediate overflow channels 4; the lower ends of the sprue 5 are symmetrical A pair of molten iron purifiers 6 are connected; the molten iron purifiers 6 are conventional foam ceramic filters in the art; the lower part of the molten iron purifiers 6 is vertically connected to molten iron conveying channels 7; the lower ends of the two molten iron conveying channels 7 are connected by conventional runners 8 in the art; upper gates 9 are connected to the opposite side walls of the molten iron conveying channels 7; the upper gates 9 have a Z-shaped structure; the upper gates 9 are connected to the upper part of the casting mold 1; the opposite side walls of the runner 8 are connected to intermediate gates 10 and bottom gates 11 side by side; the intermediate gates 10 are connected to the middle part of the casting mold 1; the bottom gates 11 are connected to the lower part of the casting mold 1; a Y-shaped structure is formed between the intermediate gates 10 and the bottom gates 11.

[0027] In use, molten iron is poured into the sprue 5, filtered by the molten iron purifier 6, and then flows into the molten iron conveying channel 7 and the horizontal sprue 8. The molten iron is then sent to the casting mold 1 through the upper gate 9, the middle gate 10 and the bottom gate 11, which can effectively improve the filling effect of the casting mold 1 and make the temperature distribution in the casting mold 1 more even, avoiding defects such as porosity and sand erosion in the casting.

[0028] Among them, such as Figure 1-3 As shown, the lower parts of the two casting molds 1 are connected by a pair of side-by-side support columns 12; the two support columns 12 are located on opposite sides of the horizontal sprue 8. By connecting a pair of support columns 12 side-by-side between the lower parts of the two casting molds 1, the stability during the casting process can be effectively guaranteed.

[0029] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A casting gating system for an engine cylinder block, comprising a pair of symmetrically arranged casting molds (1); characterized in that: Both casting molds (1) have multiple side overflow channels (2) vertically connected to their opposite outer side walls, and multiple exhaust channels (3) vertically connected to the upper part of the casting molds (1); the two casting molds (1) are connected by a pair of intermediate overflow channels (4) arranged in parallel; the intermediate overflow channels (4) are connected to the upper part of the casting molds (1); A straight pouring channel (5) is vertically arranged between the two intermediate overflow channels (4); a pair of molten iron purifiers (6) are symmetrically connected to the lower end of the straight pouring channel (5); a molten iron conveying channel (7) is vertically connected to the lower part of the molten iron purifier (6); the lower ends of the two molten iron conveying channels (7) are connected by a horizontal pouring channel (8). The molten iron conveying channel (7) has upper gates (9) connected to its opposite side walls; the upper gates (9) are connected to the upper part of the casting mold (1); the horizontal runner (8) has middle gates (10) and bottom gates (11) connected side by side to its opposite side walls; the middle gates (10) are connected to the middle part of the casting mold (1); the bottom gates (11) are connected to the lower part of the casting mold (1); A Y-shaped structure is formed between the intermediate gate (10) and the bottom gate (11).

2. The casting and gating system for an engine cylinder block according to claim 1, characterized in that, The lower parts of the two casting molds (1) are connected by a pair of side-by-side support columns (12); the two support columns (12) are located on opposite sides of the runner (8).

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