A casting riser for automatic glueing

Abstract

The utility model relates to a casting riser for automatic glueing belongs to sand mould casting technical field to solve the problem that the existing technology adopts sand mould casting production turbine shell, utilizes automatic core assembly line to produce sand mould, and the glue gun can have spatial interference with the riser, leading to poor glueing effect and traditional heating riser not having exhaust function, and the additional exhaust riser needs to be set, making the glueing period long. The application includes a riser body, the position of the riser body connected with the sand mould extends outward along the riser body to form an extended mounting seat, and the outward extending area constitutes an extended end; the sand mould has a mounting groove corresponding to the mounting seat; when the riser body is installed in the sand mould, the mounting seat is installed in the mounting groove, and the extended end of the riser body and the mounting groove form a glueing area. The casting riser of the application will not have spatial interference with the glue gun, the glueing quality is good, the riser has an exhaust function, can replace the exhaust riser for exhaust, and the casting compactness is good.

Description

Technical Field

[0001] This utility model relates to a casting riser for automatic glue application, belonging to the field of sand casting technology. Background Technology

[0002] With the development of the turbocharger industry, higher requirements have been placed on the porosity of the internal structure of the turbine housing, a core component of turbochargers, namely, a dense internal structure free of shrinkage cavities. Currently, turbine housings are mostly manufactured using sand casting. However, with the increasing demand for higher porosity, heat-generating risers are now being installed at the hot spot location of the turbine housing during casting.

[0003] With the rapid development of automation in recent years, automatic core assembly lines have been widely adopted in foundry enterprises. However, the application of traditional risers on automatic core assembly lines can lead to interference between the glue gun and the riser edge, resulting in poor glue application, such as the glue gun knocking over the riser or the glue gun breaking. Furthermore, in turbine housing sand casting, air is drawn into the casting cavity during pouring, causing porosity, oxide inclusions, and intrusive porosity, affecting the quality of the finished casting. This necessitates the use of additional venting risers, resulting in a long glue application cycle. Therefore, a casting riser for automatic glue application is needed to address the problems of spatial interference between the glue gun and the riser during sand casting of turbine housings using automatic core assembly lines, leading to poor glue application, and the lack of venting function in traditional heating risers, requiring additional venting risers and resulting in a long glue application cycle. Utility Model Content

[0004] The purpose of this invention is to provide a casting riser for automatic glue application, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a casting riser for automatic glue application, comprising a riser body, wherein the position where the riser body connects to the sand mold extends outward along the riser body to form an extended mounting seat, and the outwardly extended area constitutes an extended end; an installation groove is provided on the sand mold at a position corresponding to the mounting seat; when the riser body is installed on the sand mold, the mounting seat is installed in the installation groove, and a glue application area is formed between the extended end of the riser body and the installation groove.

[0006] Specifically, the riser body is a semi-closed cavity structure with a closed top and an open bottom. The riser body has a gradually changing diameter along the radial direction, and the mounting base is located on the bottom opening side of the small diameter end of the riser body. The riser body is equipped with an exhaust assembly.

[0007] Specifically, the venting assembly consists of several vent holes, which are located at the top closed end of the riser body.

[0008] Specifically, the exhaust assembly is an exhaust section made of breathable material.

[0009] Specifically, the riser body is made of breathable material to form the venting section.

[0010] Specifically, the breathable material is coarse-grained perlite.

[0011] Specifically, the mounting base and the mounting groove are shaped to match each other. The mounting base has a structure with a gradually changing diameter along the radial direction of the pipe, and the bottom of the mounting base is the small diameter end.

[0012] Specifically, the ratio of the extension dimension of the extension end to the diameter dimension of the bottom opening side of the riser body is 1-1.5 / 10.

[0013] Specifically, the extension dimension of the extension end is at least 5mm.

[0014] Specifically, a pressure cone is provided at the middle position of the cavity side of the top closed end of the riser body.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This application solves the problem of spatial interference between the glue gun and the edge of the riser body by setting an outwardly extending end at the bottom of the riser body of the casting riser, so as to extend the connection position between the riser body and the sand mold outward, thereby avoiding the glue gun overturning the riser and the glue gun breaking, and thus improving the glue application quality.

[0017] 2. Based on the foregoing, the riser body of this application is equipped with a venting component to enable the riser to vent, thereby facilitating the removal of air from the casting cavity, improving the density of the casting, and reducing the porosity. Additionally, it can replace traditional venting risers for venting, reducing the number of risers required, thus lowering casting costs and reducing the glue application cycle.

[0018] 3. Based on the foregoing, the venting assembly of this application can be configured to either directly open a venting hole at the top closed end of the riser or make the entire riser body out of breathable material, depending on actual production requirements, thereby improving the applicability of the product.

[0019] 4. Based on the foregoing, the extension dimension of the extended end of the riser body in this application is designed to match the dimension of the bottom opening side of the riser body to improve product applicability. Furthermore, to accommodate different glue guns and glue application requirements, the extension dimension of the extended end of the riser body in this application is at least 5mm.

[0020] 5. Based on the foregoing, the extended end of the riser body of this application is set to a shape that is compatible with the sand mold mounting groove. The mounting seat is a structure with a gradually changing diameter along the radial direction and an overall V-shaped cross-section, so that the edge of the mounting seat has a certain outward slope, which can prevent glue from falling into the mold cavity and also prevent molten iron from overflowing when applying glue. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the casting riser used for automatic glue application in this embodiment;

[0022] Figure 2 This is a structural side view of the casting riser used for automatic glue application in this embodiment;

[0023] Figure 3 This is a bottom view of the structure of the casting riser used for automatic glue application in this embodiment;

[0024] Figure 4 for Figure 2 Sectional view of the structure at point AA;

[0025] Figure 5 This is a schematic diagram of the structure for automatically applying glue to the casting riser and sand mold in this embodiment. Detailed Implementation

[0026] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0027] Example 1: Please refer to Figures 1-5 This embodiment discloses a casting riser for automatic glue application, including a riser body 1. The position where the riser body is connected to the sand mold 5 extends outward along the riser body to form an extended mounting seat 2, and the outward extension area constitutes an extension end. An installation groove is opened on the sand mold 5 at a position corresponding to the mounting seat 2. When the riser body is installed on the sand mold, the mounting seat is installed in the installation groove, and a glue application area is formed between the extension end of the riser body and the installation groove.

[0028] In this embodiment, the riser body 1 is a semi-closed cavity structure with a closed top and an open bottom. The riser body has a gradually changing diameter along the radial direction, and the mounting base is located on the bottom opening side of the small diameter end of the riser body. The riser body is equipped with an exhaust assembly.

[0029] Furthermore, the venting assembly in this embodiment has several vent holes (not shown), which are located at the top closed end of the riser body.

[0030] In this embodiment, the mounting base 2 and the mounting groove are adapted to each other. The mounting base has a structure with a gradually changing radial pipe diameter, and the bottom of the mounting base is the smaller diameter end. The ratio of the extension dimension of the extension end of the riser body to the diameter dimension of the bottom opening side of the riser body is 1-1.5 / 10, and the extension dimension of the extension end of the riser body is at least 5mm.

[0031] In addition, in this embodiment, a pressure cone 3 with a triangular cross-section is provided at the middle position of the cavity side of the top closed end of the riser body.

[0032] Example 2: The difference between Example 2 and Example 1 is that the venting component of Example 2 is a venting part made of breathable material. In order to facilitate the production of the riser body, the riser body of Example 2 is made entirely of breathable material to form the venting part, and the breathable material is selected as coarse-grained floating beads.

[0033] Working Principle: In this embodiment, the casting riser for automatic glue application is first installed in the mounting slot of the sand mold via an automatic core assembly line. Then, white glue is applied into the glue application gap formed between the mounting base and the mounting slot using the glue application gun 4. Because the mounting base of the riser body in this embodiment extends outwards, it does not spatially interfere with the glue gun, allowing the glue gun to perform the glue application operation normally. Furthermore, the mounting base of the riser body in this embodiment is designed with a gradually changing radial diameter structure and an overall V-shaped cross-section, giving the edges of the mounting base a certain outward slope. This prevents glue from falling into the mold cavity and also avoids molten iron overflow during glue application. During casting, the riser body in this embodiment has excellent venting function, which can promptly expel air trapped in the mold cavity, thereby improving the density of the casting and reducing the number of venting risers required, lowering casting costs, and reducing the amount and cycle time of glue application.

[0034] The embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. For those skilled in the art, after learning the contents of the present invention, several equivalent changes and substitutions can be made without departing from the principle of the present invention. These equivalent changes and substitutions should also be considered to fall within the protection scope of the present invention.

Claims

1. A casting riser for automatic glue application, comprising a riser body, characterized in that: The position where the riser body connects to the sand mold extends outward along the riser body to form an extended mounting seat, and the outward extension area constitutes the extension end; an installation groove is opened on the sand mold at a position corresponding to the mounting seat; when the riser body is installed on the sand mold, the mounting seat is installed in the installation groove, and a glue application area is formed between the extension end of the riser body and the installation groove.

2. A casting riser for automatic glue application according to claim 1, characterized in that: The riser body is a semi-closed cavity structure with a closed top and an open bottom. The riser body has a gradually changing diameter along the radial direction, and the mounting base is located on the bottom opening side of the small diameter end of the riser body. The riser body is equipped with an exhaust assembly.

3. A casting riser for automatic glue application according to claim 2, characterized in that: The venting assembly consists of several vent holes, which are located at the top closed end of the riser body.

4. A casting riser for automatic glue application according to claim 2, characterized in that: The exhaust assembly is an exhaust section made of breathable material.

5. A casting riser for automatic glue application according to claim 4, characterized in that: The riser body is made of breathable material to form an exhaust section.

6. A casting riser for automatic glue application according to claim 4, characterized in that: The breathable material is coarse-grained granules.

7. A casting riser for automatic glue application according to any one of claims 2-6, characterized in that: The mounting base and the mounting groove are adapted to each other. The mounting base has a structure with a gradually changing diameter along the radial direction, and the bottom of the mounting base is the small diameter end.

8. A casting riser for automatic glue application according to claim 7, characterized in that: The ratio of the extension dimension of the extension end to the diameter dimension of the bottom opening side of the riser body is 1-1.5 / 10.

9. A casting riser for automatic glue application according to claim 8, characterized in that: The extension dimension of the extension end is at least 5 mm.

10. A casting riser for automatic glue application according to claim 2, characterized in that: A pressure cone is provided at the middle position of the cavity side of the top closed end of the riser body.

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