Exhaust device for precoated sand shell mold shell core casting
By designing an exhaust device with a telescopic plug and a hammer, the problem that the existing exhaust device cannot adapt to thick sand molds and sand accumulation is solved, and the exhaust efficiency and smooth air flow are improved to adapt to sand mold layers of different thicknesses.
Patent Information
- Application Number
- CN202420458349.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-03-11
AI Technical Summary
The existing exhaust devices cannot adapt to sand molds with thicker sand layers, and when using the cylinder-mounted exhaust structure, sand accumulation is easily generated in the cylinder, affecting the exhaust efficiency.
An exhaust device including an exhaust pipe, a telescopic plug and a hammer is designed. The telescopic plug achieves length adjustment by rotating thread grooves and threaded teeth to adapt to sand mold layers of different thicknesses; the hammer is used to push and drop the sand and soil remaining on the inside of the cylinder to ensure smooth air flow.
The exhaust device can adapt to sand mold layers of different thicknesses, improves exhaust efficiency, and effectively cleans up the sand and soil in the cylinder through the design of the hammer, ensuring the smooth flow of air flow.
Smart Images
Figure CN222856654U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of exhaust devices for coated sand shell mold shell core casting, in particular to an exhaust device for coated sand shell mold shell core casting. Background Art
[0002] In the process of casting the core of the coated sand shell mold, the exhaust device plays an important role. Since there are cavities and channels inside the core mold, when the molten metal enters the core mold, the air in it needs to be effectively discharged to avoid pores and defects.
[0003] Exhaust can be carried out by using exhaust rods, exhaust holes, exhaust cylinders, exhaust pipes, etc. However, these existing exhaust devices have simple structures, and the length or insertion depth cannot be adjusted. They cannot adapt to sand molds with thicker sand layers. In addition, when using a cylinder-mounted exhaust structure, after insertion, some sand and soil are easily accumulated in the cylinder, affecting the exhaust efficiency. Utility Model Content
[0004] The technical problem to be solved by the utility model is that the existing exhaust device cannot adapt to the sand mold with thicker sand layer, and is inconvenient to clean the sand and soil remaining in the cylinder after insertion.
[0005] The technical solution adopted by the utility model is an exhaust device for coated sand shell mold shell core casting, comprising an exhaust pipe: the exhaust pipe is divided into an exhaust section and an insertion section, a thread groove is provided on the inner side of the exhaust section, a telescopic plug is provided on the inner side of the exhaust pipe, the telescopic plug comprises a connecting end and an insertion end, a thread tooth which is threadedly rotatably connected to the thread groove is provided on the outer side of the connecting end, a hammer is provided on the inner side of the insertion end, a connecting rod is fixed on the top of the hammer, a support rod is fixed on the top of the connecting rod, two opposite deep notches and two opposite shallow notches are provided on the upper side of the exhaust section, and the support rod is supported in the shallow notch.
[0006] As a further solution of the utility model: an annular curved baffle is fixed on the outer side of the exhaust section and can be supported on the upper side of the sand mold.
[0007] As a further solution of the utility model: the outer diameter of the connecting end is smaller than the inner diameter of the exhaust section, and the outer diameter of the inserting end is smaller than the inner diameter of the inserting section, so as to facilitate the telescopic plug to be telescopic.
[0008] As a further solution of the utility model: the length of the insertion section is greater than the length of the insertion section, which is convenient for inserting the sand mold.
[0009] As a further solution of the utility model: the maximum diameter of the hammer is smaller than the inner diameter of the insertion end, so that the hammer can be easily moved.
[0010] As a further solution of the utility model: the length of the connecting rod is equal to the length of the exhaust pipe, and the depth of the deep notch is equal to the length of the insertion end, so that the hammer can adapt to the telescopic length of the telescopic plug.
[0011] Compared with the prior art, the utility model has the following advantages: the utility model adds a telescopic plug structure, and by rotating the telescopic plug, the length of the overall exhaust structure can be adjusted, which can adapt to sand mold layers of different thicknesses, and adds a hammer structure, which can timely drop the sand and soil remaining on the inside of the cylinder to ensure smooth airflow. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0013] Figure 1 The utility model is a three-dimensional integral structure of an exhaust device for film-coated sand shell mold shell core casting Figure 1 .
[0014] Figure 2 The utility model is a three-dimensional integral structure of an exhaust device for film-coated sand shell mold shell core casting Figure 2 .
[0015] Figure 3 The utility model is a partial structural sectional view of an exhaust device for coated sand shell mold shell core casting.
[0016] In the attached figure:
[0017] 1. Exhaust pipe; 1.1. Exhaust section; 1.2. Insertion section; 1.3. Deep notch; 1.4. Shallow notch; 2. Telescopic plug; 2.1. Connecting end; 2.2. Insertion end; 3. Throwing hammer; 3.1. Connecting rod; 3.2. Support rod; 4. Annular curved baffle. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] The utility model provides a technical solution to solve the existing problems raised in the background technology.
[0020] Combined with Figure 1-3It can be known that the exhaust device includes an exhaust pipe 1, which is divided into an exhaust section 1.1 and an insertion section 1.2. A threaded groove is provided on the inner side of the exhaust section 1.1. A telescopic plug 2 is provided on the inner side of the exhaust pipe 1. The telescopic plug 2 includes a connecting end 2.1 and an inserting end 2.2. A threaded tooth that is threadedly rotatably connected to the threaded groove is provided on the outer side of the connecting end 2.1. The rotating telescopic plug 2 can adjust the length of the extension in the exhaust pipe 1. A hammer 3 is provided on the inner side of the insertion end 2.2 for pushing down the sand and soil remaining on the inner side of the insertion end 2.2. A connecting rod 3.1 is fixed on the top of the hammer 3. A support rod 3.2 is fixed on the top of the connecting rod 3.1. Two opposite deep notches 1.3 and two opposite shallow notches 1.4 are provided on the upper side of the exhaust section 1.1. The deep notch 1.3 facilitates the connecting rod 3.1 to go deeper, and the support rod 3.2 is supported in the shallow notch 1.4.
[0021] An annular curved baffle 4 is fixed on the outside of the exhaust section 1.1 and can be supported on the upper side of the sand mold; the outer diameter of the connecting end 2.1 is smaller than the inner diameter of the exhaust section 1.1, and the outer diameter of the insertion end 2.2 is smaller than the inner diameter of the insertion section 1.2, so that the telescopic plug 2 can be extended and retracted; the length of the insertion section 1.2 is greater than the length of the insertion section 1.2, which is convenient for inserting the sand mold; the maximum diameter of the hammer 3 is smaller than the inner diameter of the insertion end 2.2, which is convenient for moving the hammer 3; the length of the connecting rod 3.1 is equal to the length of the exhaust pipe 1, and the depth of the deep notch 1.3 is equal to the length of the insertion end 2.2, so that the hammer 3 can adapt to the telescopic length of the telescopic plug 2.
[0022] The working principle of the present application is as follows: when exhausting, first adjust the extension length of the telescopic plug 2 according to the specific sand mold casting, and adjust it by rotating the telescopic plug 2. After adjustment, insert the telescopic plug 2 into the sand mold. After the insertion is completed, the support rod 3.2 can be taken out of the shallow groove 1.4 by hand, and then turned to the deep groove 1.3, and the connecting rod 3.1 is pushed in the direction of the telescopic plug 2. The hammer 3 on the inner side of the insertion end 2.2 will drop the sand and soil remaining on the inner side of the insertion end 2.2 during the insertion. After the hammer 3 is inserted, the telescopic plug 2 can be taken out of the telescopic plug 2 as a whole, thereby ensuring the fluidity of the airflow and improving the exhaust efficiency.
[0023] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. An exhaust device for coated sand shell core casting, comprising an exhaust pipe (1), characterized in that: The exhaust pipe (1) is divided into an exhaust section (1.1) and an insertion section (1.2); a thread groove is provided on the inner side of the exhaust section (1.1); a telescopic plug (2) is provided on the inner side of the exhaust pipe (1); the telescopic plug (2) comprises a connecting end (2.1) and an inserting end (2.2); a thread tooth is provided on the outer side of the connecting end (2.1) and is threadedly connected to the thread groove; a hammer (3) is provided on the inner side of the inserting end (2.2); a connecting rod (3.1) is fixed on the top of the hammer (3); a supporting rod (3.2) is fixed on the top of the connecting rod (3.1); two opposite deep notches (1.3) and two opposite shallow notches (1.4) are provided on the upper side of the exhaust section (1.1); the supporting rod (3.2) is supported in the shallow notches (1.4).
2. The exhaust device for coated sand shell mold shell core casting according to claim 1, characterized in that: An annular curved baffle (4) is fixed on the outside of the exhaust section (1.1).
3. The exhaust device for coated sand shell mold shell core casting according to claim 1, characterized in that: The outer diameter of the connecting end (2.1) is smaller than the inner diameter of the exhaust section (1.1), and the outer diameter of the insertion end (2.2) is smaller than the inner diameter of the insertion section (1.2).
4. The exhaust device for coated sand shell mold shell core casting according to claim 1, characterized in that: The length of the insertion section (1.2) is greater than the length of the insertion section (1.2).
5. The exhaust device for coated sand shell mold shell core casting according to claim 1, characterized in that: The maximum diameter of the hammer (3) is smaller than the inner diameter of the insertion end (2.2).
6. The exhaust device for coated sand shell mold core casting according to claim 1, characterized in that: The length of the connecting rod (3.1) is equal to the length of the exhaust pipe (1), and the depth of the deep notch (1.3) is equal to the length of the insertion end (2.2).