Low-pressure and gravity combined type pouring mold for intake manifold
Through the use of low-pressure and gravity combined casting molds, combined with low-pressure casting and gravity shrinkage technology, the problems of insufficient casting, cold partition and shrinkage in the casting air intake manifold are solved, and the casting quality and engine performance are improved.
Patent Information
- Application Number
- CN202420651386.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-01-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the process of casting the intake manifold, the prior art is difficult to effectively control insufficient pouring, cold partition and shrinkage defects, resulting in unstable engine power, reduced fuel efficiency and gas emission pollution.
The low-pressure and gravity combined casting mold is adopted. Through the dual action of the low-pressure casting device and gravity, combined with the gravity riser at the top and the side riser structure, we ensure the full filling and retraction of the castings and avoid defects.
It effectively reduces defects such as insufficient pouring, cold partition and shrinkage, improves the quality and output of castings, and ensures uniform gas distribution and fuel efficiency of the engine.
Smart Images
Figure CN222288761U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of casting molds, and in particular relates to a mold and a method for low-pressure, gravity combined casting of an intake manifold. Background Art
[0002] The engine intake manifold plays a very important role in the operation of the engine. Its main function is to evenly distribute air, fuel mixture or clean air to each cylinder. If the gas distributed to each cylinder is uneven, it will cause unstable engine power and increase engine wear. At the same time, it will also reduce fuel efficiency, increase gas emissions and pollute the environment.
[0003] Intake manifolds are mostly produced by casting technology. Intake manifolds are thin-walled parts with a wall thickness of only about 5 mm. Therefore, defects such as insufficient pouring, cold shut, and shrinkage are prone to occur during the casting production process, and the above defects will directly lead to air leakage in the intake manifold and form scrap. Intake manifolds are generally produced by gravity casting or low-pressure casting. When gravity casting is used, the bottom area far away from the riser is prone to insufficient pouring, cold shut and even shrinkage defects. When low-pressure casting is used, because the riser is at the bottom, the top of the intake manifold far away from the riser is prone to insufficient pouring and cold shut during production. Therefore, it is difficult to control the elimination of its defects in the actual production process. Utility Model Content
[0004] In view of the problems existing in the background technology, the utility model provides a low-pressure, gravity combined casting mold for an intake manifold. The utility model utilizes the dual effects of a low-pressure casting device and gravity to effectively reduce defects such as insufficient casting, cold shut, shrinkage, etc. in the production process of castings.
[0005] To achieve the above object, the utility model adopts the following technical scheme: a low-pressure, gravity combined casting mold for an intake manifold, comprising a casting cavity, a feed port, a runner cavity, a left riser, a right riser and a gravity riser, a gravity riser is arranged above the casting cavity, and the upper end surface of the casting cavity is connected to the gravity riser; the left end surface of the casting cavity is provided with a left riser, and the right end surface of the casting cavity is provided with a right riser; the lower end surface of the casting cavity is connected to the runner cavity;
[0006] The runner cavity comprises a first runner and a second runner, and the lower end surfaces of the first runner and the second runner are provided with a feed port; the left ends of the first runner and the second runner are connected to the left riser, and the right ends of the first runner and the second runner are connected to the right riser;
[0007] The gravity riser comprises a first riser and a second riser, and the first riser and the second riser are connected through a second connecting channel.
[0008] The upper end surface of the first air inlet pipe of the casting cavity is connected to the first riser through the runner; the upper end surface of the second air inlet pipe of the casting cavity is connected to the second riser through the runner; a plurality of first connecting channels are provided in the middle of the casting cavity, and the first connecting channels are connected to the lower ends of the second connecting channels.
[0009] The left riser is a side riser, and the right end surface of the left riser is connected with the left end surface of the casting cavity.
[0010] The right riser is a side riser, and the left end surface of the right riser is connected with the right end surface of the casting cavity.
[0011] The beneficial effects of the utility model are as follows: the utility model provides a low-pressure, gravity combined casting mold for an intake manifold. The utility model adopts a low-pressure casting process to ensure the quality of the bottom and sides through the pressure effect during low-pressure casting; a gravity riser is added to the top of the casting cavity to compensate for the shrinkage of the top of the casting through gravity. Through this combined process, the quality and output of the casting can be effectively improved, and the occurrence of defects such as insufficient casting, cold shut, and shrinkage can be eliminated. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the utility model.
[0013] Figure 2 Schematic diagram of the casting cavity.
[0014] Figure 3 Schematic diagram of the runner cavity.
[0015] Figure 4 Schematic diagram of gravity riser.
[0016] In the figure: 1, casting cavity, 11, first connecting channel, 12, left end face, 13, right end face, 14, first air inlet pipe, 15, second air inlet pipe, 2, feed port, 3, runner cavity, 31, first runner, 32, left riser, 33, right riser, 34, second runner, 4, gravity riser, 41, third channel, 42, second connecting channel, 44, first riser, 45, second riser. DETAILED DESCRIPTION
[0017] The technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the specification. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0018] The following is a further detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings: A low-pressure, gravity combined casting mold for an intake manifold, comprising a casting cavity 1, a feed port 2, a runner cavity 3, a left riser 32, a right riser 33 and a gravity riser 4, wherein the casting cavity 1 is a "V"-shaped arranged intake manifold, a gravity riser 4 is provided above the casting cavity 1, and the upper end surface of the casting cavity 1 is connected to the gravity riser 4; the gravity riser 4 comprises a first riser 44 and a second riser 45, and the first riser 44 and the second riser 45 are connected through a second connecting channel 42; the upper end surface of the first intake pipe 14 of the casting cavity 1 is connected to the first riser 44 through the runner. The upper end surface of the second air inlet pipe 15 of the casting cavity 1 is connected to the second riser 45 through the runner; a plurality of first connecting channels 11 are provided in the middle of the casting cavity 1, and the first connecting channel 11 is connected to the lower end of the second connecting channel 42; in this embodiment, the first riser 44 and the second riser 45 are horizontally placed rectangular parallelepiped structures, and the first riser 44 and the second riser 45 are arranged above the first air inlet pipe 14 and the second air inlet pipe 15 of the casting cavity 1. The first riser 44 and the second riser 45 function to compensate the first air inlet pipe 14 and the second air inlet pipe 15 of the casting cavity 1, which can effectively improve the quality and output of the casting and eliminate defects such as insufficient pouring, cold shut, shrinkage and looseness; The function of the first connecting channel 11 is to smoothly discharge the gas inside the casting cavity 1 during the pouring process to avoid insufficient pouring in the casting cavity 1; the left end face 12 of the casting cavity 1 is provided with a left riser 32, the left riser 32 is a side riser, and the right end face of the left riser 32 is connected to the left end face 12 of the casting cavity 1; the right end face 13 of the casting cavity 1 is provided with a right riser 33, the right riser 33 is a side riser, and the left end face of the right riser 33 is connected to the right end face 13 of the casting cavity 1; the functions of the left riser 32 and the right riser 33 are to compensate the shrinkage of the machined surfaces on both sides of the casting cavity 1 to avoid defects on the machined surfaces and affect the later processing of the workpiece; The lower end surface of the casting cavity 1 is connected with the runner cavity 3; the runner cavity 3 includes a first runner 31 and a second runner 34, and the lower end surfaces of the first runner 31 and the second runner 34 are provided with a feed port 2; the left ends of the first runner 31 and the second runner 34 are connected with the left riser 32, and the right ends of the first runner 31 and the second runner 34 are connected with the right riser 33; in the present embodiment, the first runner 31 and the second runner 34 are horizontally placed rectangular structures, the first runner 31 and the second runner 34 are arranged below the casting cavity 1, the first runner 31 and the second runner 34 are equivalent to the lower riser of the casting cavity 1, and the first runner 31 and the second runner 34 can compensate for the shrinkage of the lower end of the casting cavity 1.
[0019] The use process of the utility model is as follows: first, the prepared mold is placed on a pouring device; during the pouring process, molten aluminum enters from the bottom feed port 2 by low-pressure pouring, and is filled from bottom to top under the action of pressure, and enters the runner cavity 3, the casting cavity 1, the left riser 32 and the right riser 33 in sequence, and finally enters the top gravity riser 4; after the filling is completed, the mold enters the solidification process, and the mold solidifies under pressure; during the solidification process, the top gravity riser 4 shrinks downward, and through this combined production method, defects such as cold shut, insufficient pouring, and shrinkage of the casting can be effectively eliminated.
[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
[0021] The parts not described in detail in this utility model are prior art.
Claims
1. A low-pressure, gravity combined casting mold for an intake manifold, comprising a casting cavity (1), a feed port (2), a runner cavity (3), a left riser (32), a right riser (33) and a gravity riser (4), wherein: A gravity riser (4) is provided above the casting cavity (1), and the upper end surface of the casting cavity (1) is connected to the gravity riser (4); the left end surface (12) of the casting cavity (1) is provided with a left riser (32), and the right end surface (13) of the casting cavity (1) is provided with a right riser (33); the lower end surface of the casting cavity (1) is connected to the runner cavity (3); The runner cavity (3) comprises a first runner (31) and a second runner (34); a feed port (2) is provided on the lower end surfaces of the first runner (31) and the second runner (34); the left ends of the first runner (31) and the second runner (34) are connected to the left riser (32); and the right ends of the first runner (31) and the second runner (34) are connected to the right riser (33); The gravity riser (4) comprises a first riser (44) and a second riser (45), and the first riser (44) and the second riser (45) are connected via a second connecting channel (42).
2. A low-pressure, gravity combined casting mold for an intake manifold according to claim 1, characterized in that: The upper end surface of the first air inlet pipe (14) of the casting cavity (1) is connected to the first riser (44) through a runner; the upper end surface of the second air inlet pipe (15) of the casting cavity (1) is connected to the second riser (45) through a runner; a plurality of first connecting channels (11) are provided in the middle of the casting cavity (1), and the first connecting channels (11) are connected to the lower ends of the second connecting channels (42).
3. A low-pressure, gravity combined casting mold for an intake manifold according to claim 1, characterized in that: The left riser (32) is a side riser, and the right end surface of the left riser (32) is connected to the left end surface (12) of the casting cavity (1).
4. A low-pressure, gravity combined casting mold for an intake manifold according to claim 1, characterized in that: The right riser (33) is a side riser, and the left end surface of the right riser (33) is connected to the right end surface (13) of the casting cavity (1).