Exhaust structure and sand core mold
By installing columns and mounting plates on the vertical wall of the sand core mold to form exhaust passages and grilles, the problem of low exhaust efficiency in the prior art is solved, and the molding quality and firmness of the sand core are improved.
Patent Information
- Application Number
- CN202420166209.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-23
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-01-23
AI Technical Summary
The exhaust plugs of existing sand core molds are only installed at the bottom, resulting in low gas discharge efficiency, which can easily lead to poor curing and not tightening of the sand core, resulting in scattered sand and sand holes, affecting the quality of the casting.
Design an exhaust structure, including a column and a mounting plate, the column is installed on the vertical wall of the sand core mold, and the exhaust passage and grille are provided in the column, and the exhaust plug at the bottom of the sand core mold can realize multi-region gas Exhaust and improve exhaust efficiency.
The exhaust efficiency of the sand core mold is improved, the curing time of amine blown, the molding quality and edge tightness of the sand core are improved, and the occurrence of scattered sand core is reduced.
Smart Images
Figure CN222359218U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of sand core technology, and in particular to an exhaust structure and a sand core mold. Background Art
[0002] Sand cores are often used to make hollow or complex-shaped internal cavities in castings. Sand core molds are required to make sand cores. First, sand is shot into the sand core mold, and then other treatments such as extrusion, vibration, or amine blowing and curing are performed to make the sand core material tightly combined. After the sand core is completely cured, it can be taken out of the sand core mold.
[0003] In order to fully fill the sand core and reduce the generation of pores and defects, exhaust plugs are installed on the flat and curved surfaces of the inner bottom of the sand core mold. However, the current exhaust plugs are cylindrical and can only open a certain number of holes on the inner bottom of the sand core mold. Under the action of gravity, the exhaust plugs are installed in the holes. Since the exhaust plugs are only provided at the bottom of the sand core mold, the exhaust efficiency of the gas in the sand core mold is low, which can easily lead to poor solidification and looseness of the sand core, resulting in scattered sand, and then causing sand holes in the casting, resulting in its scrapping. Utility Model Content
[0004] In view of the problems existing in the background technology, the present application provides an exhaust structure and a sand core mold. The exhaust structure can be installed on the vertical wall of the sand core mold, and cooperate with the exhaust plug at the bottom of the sand core mold to improve the exhaust efficiency of the sand core mold and improve the quality of sand core molding.
[0005] According to one aspect of the utility model, there is provided an exhaust structure, comprising: a column, the column having a first end face and a second end face facing each other, an exhaust passage formed in the column, the exhaust passage being connected to the second end face, a grille being formed between the exhaust passage and the first end face, the grille being connected to the first end face and the exhaust passage;
[0006] A mounting plate is fixed on the column and is close to the second end surface.
[0007] In some embodiments of the present invention, the exhaust passage is arranged along the length direction of the column.
[0008] In some embodiments of the present invention, the column is a cylinder.
[0009] In some embodiments of the present invention, a through hole is provided on the mounting plate.
[0010] In some embodiments of the present invention, more than two mounting plates are fixed on the column.
[0011] In some embodiments of the present invention, more than two mounting plates are evenly distributed around the column.
[0012] In some embodiments of the present invention, the column is made of metal.
[0013] According to another aspect of the present invention, a sand core mold is provided, comprising a mold body and the above-mentioned exhaust structure.
[0014] In some embodiments of the utility model, a cavity is formed in the mold body, the vertical wall of the cavity is provided with a mounting hole connected to the outside of the mold body, the column is installed in the mounting hole, and the grille is located at one end of the mounting hole close to the cavity.
[0015] In some embodiments of the present invention, a side of the grille away from the second end surface fits with a surface of a vertical wall of the cavity located at the mounting hole.
[0016] An embodiment of the present application provides an exhaust structure, which can realize the installation of the exhaust structure on the vertical wall of the sand core mold by fixing a mounting plate on a column and opening a mounting hole compatible with the column on the vertical wall of the sand core mold, and opening an exhaust channel in the column, and forming a grille at one end of the exhaust channel, which cooperates with the exhaust plug at the bottom of the sand core mold to realize the simultaneous discharge of gas from multiple areas in the sand core mold during sand shooting and amine blowing curing, thereby improving the exhaust efficiency of the sand core mold, better performing sand shooting and amine blowing curing of the sand core, reducing the amine blowing curing time, and improving the quality of sand core molding. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:
[0018] Figure 1 It is a schematic diagram of the overall structure of the exhaust structure of the embodiment of the present application;
[0019] Figure 2 It is a cross-sectional view showing the structure inside the column;
[0020] Figure 3 It is a side view of the exhaust structure.
[0021] The reference numerals in the accompanying drawings represent the following: 1. column; 2. mounting plate; 3. first end face; 4. second end face; 5. exhaust passage; 6. grille; 7. through hole. DETAILED DESCRIPTION
[0022] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0023] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.
[0024] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.
[0025] The exhaust structure and sand core mold provided in the embodiments of the present application are described below in conjunction with the accompanying drawings.
[0026] The present application embodiment discloses an exhaust structure. Figure 1 and Figure 2 As shown, the exhaust structure includes a column 1 and a mounting plate 2; wherein the column 1 has a first end face 3 and a second end face 4 facing each other, an exhaust channel 5 is formed in the column 1, the exhaust channel 5 is connected to the second end face 4, a grille 6 is formed between the exhaust channel 5 and the first end face 3, the grille 6 connects the first end face 3 and the exhaust channel 5; the mounting plate 2 is fixed on the column 1, and the mounting plate 2 is close to the second end face 4.
[0027] By using the exhaust structure in the technical solution, a mounting hole adapted to the column 1 is opened on the vertical wall of the sand core mold, so that the mounting hole connects the inside and the outside of the sand core mold, and the column 1 is inserted into the mounting hole from the outside of the vertical wall of the sand core mold, so that the grille 6 faces the inside of the sand core mold, and the mounting plate 2 is located on the outside of the vertical wall of the sand core mold, and then the mounting plate 2 is fixed to the sand core mold, and cooperates with the conventional exhaust plug at the bottom of the sand core mold. During sand shooting and amine blowing curing, the gas can be discharged from the inner bottom and vertical wall of the sand core mold at the same time, thereby improving the exhaust efficiency of the sand core mold, better performing sand shooting and amine blowing curing of the sand core, reducing the amine blowing curing time, improving the compactness of the sand core corners, reducing the occurrence of scattered sand due to poor curing and loose sand core, and improving the quality of sand core molding.
[0028] In some embodiments of the present invention, Figure 2 As shown, the exhaust channel 5 is arranged along the length direction of the column 1 .
[0029] In this embodiment, the exhaust channel 5 is linearly connected to the second end face 4 and the grille 6 (first end face 3), which can reduce the resistance to the gas, so that the gas in the sand core mold can be efficiently discharged to the outside of the sand core mold through the exhaust channel 5 after passing through the grille 6, thereby reducing the gas exhaust time.
[0030] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the column 1 is a cylinder.
[0031] It can be understood that in this embodiment, corresponding to the shape of the column 1, the mounting hole of the sand core mold is also cylindrical. This design not only allows the grille 6 to have a larger filtering area, but also makes the processing of the mounting hole of the sand core mold simpler.
[0032] In other embodiments, the column 1 may also adopt a multi-prism structure, such as a square column, a pentagonal column, etc., which is not limited here.
[0033] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, a through hole 7 is provided on the mounting plate 2 .
[0034] In this embodiment, bolts are inserted into the through holes 7 and screwed onto the vertical walls of the sand core mold to achieve detachable connection between the mounting plate 2 and the column 1 and the sand core mold, thereby facilitating cleaning of the grille 6 and replacement of the exhaust structure.
[0035] In other embodiments, the mounting plate 2 and the sand core mold may also be fixed by a clamping method, which is not limited here.
[0036] In some embodiments of the present invention, Figure 3 As shown, more than two mounting plates 2 are fixed on the column 1 ; further, more than two mounting plates 2 are evenly distributed around the column 1 .
[0037] The plurality of mounting plates 2 can improve the fixing firmness of the column 1 on the sand core mold, so that the core sand can be filtered stably by the grid 6.
[0038] In some embodiments of the present invention, the column 1 is made of metal, including but not limited to steel, copper and the like.
[0039] Another embodiment of the present invention provides a sand core mold, which includes a mold body and the exhaust structure in any of the above embodiments.
[0040] A cavity is formed in the mold body, and a mounting hole communicating with the outside of the mold body is provided on the vertical wall of the cavity. The column 1 is mounted in the mounting hole, and the grille 6 is located at one end of the mounting hole close to the cavity.
[0041] Furthermore, the side of the grid 6 away from the second end face 4 is matched with the surface of the vertical wall of the cavity at the mounting hole to reduce the impact on the contour of the cavity and make the formed sand core meet the design requirements.
[0042] The sand core mold of this embodiment has all the technical effects of the exhaust structure of this embodiment, and the specific structure and technical effects of the sand core mold will not be elaborated in detail here. It should be noted that this embodiment only elaborates on the key technical features related to this case, and as for the technical features not related to this case, this embodiment only makes a simple illustration and a simple explanation. For example, this embodiment only briefly explains the sand core mold, and the specific structure of the sand core mold is not elaborated in detail here.
[0043] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. An exhaust structure, characterized in that: include: A column, the column having a first end face and a second end face facing each other, an exhaust passage formed in the column, the exhaust passage being connected to the second end face, a grille being formed between the exhaust passage and the first end face, the grille being connected to the first end face and the exhaust passage; A mounting plate is fixed on the column and is close to the second end surface.
2. The exhaust structure according to claim 1, characterized in that: The exhaust passage is arranged along the length direction of the column.
3. The exhaust structure according to claim 1, characterized in that: The column is a cylindrical body.
4. The exhaust structure according to claim 1, characterized in that: The mounting plate is provided with a through hole.
5. The exhaust structure according to claim 4, characterized in that: More than two mounting plates are fixed on the column.
6. The exhaust structure according to claim 5, characterized in that: More than two mounting plates are evenly distributed around the column.
7. The exhaust structure according to any one of claims 1 to 6, characterized in that: The material of the column is metal.
8. A sand core mold, characterized in that: It comprises a mold body and the exhaust structure according to any one of claims 1 to 7.
9. The sand core mold according to claim 8, characterized in that: A cavity is formed in the mold body, a vertical wall of the cavity is provided with a mounting hole connected to the outside of the mold body, the column is mounted in the mounting hole, and the grille is located at one end of the mounting hole close to the cavity.
10. The sand core mold according to claim 9, characterized in that: A side of the grille away from the second end surface is matched with a surface of a vertical wall of the cavity located at the mounting hole.