Vibrating assembly for crankshaft iron mold sand covering casting line

Abstract

The utility model relates to a vibrating assembly for a crankshaft iron mold sand covering casting line, which belongs to the technical field of sand covering casting and comprises a vibrating assembly arranged in a casting mold body and used for uniformly vibrating covering sand filled in the casting mold body in a multi-point manner. According to the vibrating assembly for the crankshaft iron mold sand covering casting line, the vibrating assembly is arranged in the casting mold body, and the multi-point uniform vibrating mode is utilized, so that covering sand filled into the mold can be distributed more uniformly. Therefore, the defects such as local missing and shrinkage cavities of the casting caused by uneven accumulation of the covered sand can be avoided, the cooling speed and solidification characteristics of all parts of the casting are consistent, the overall quality of the casting is improved, sand grains are rearranged in the vibrating process, a tighter and more ordered structure is formed, the strength and erosion resistance of a sand layer are remarkably improved, and the service life of the casting is prolonged. In the pouring process, the compact sand layer can better bear the pressure and thermal shock of molten metal, and the situations of sand layer falling, collapse and the like are reduced.

Description

Technical Field

[0001] This utility model relates to the field of sand casting technology, specifically a vibratory assembly for a crankshaft iron mold sand casting line. Background Technology

[0002] Iron mold sand casting is a special casting process that combines the advantages of metal mold casting and sand casting. Specifically, iron mold sand casting involves covering the inner surface of a metal cast iron mold (iron mold) with a thin layer of molding sand (usually coated sand) to form a mold, which is then poured to produce castings.

[0003] If the sand is not effectively vibrated during the sand-coated casting process, it may affect subsequent casting. Effective vibration allows the sand particles to rearrange within the mold cavity, forming a more compact and orderly structure, thereby improving the strength and corrosion resistance of the sand layer. Without vibration, the sand particles are arranged randomly and loosely, resulting in lower sand layer strength. During pouring and solidification, the sand layer is unable to withstand the pressure and thermal shock of the molten metal, easily leading to sand layer detachment and collapse, affecting the shape and size of the casting. Therefore, a vibration assembly for crankshaft mold sand-coated casting lines is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a vibration component for a crankshaft iron mold sand casting line, which has the advantages of uniform vibration. It solves the problem that without vibration, the sand particles are arranged randomly and loosely, the sand layer has low strength, and it is difficult to withstand the pressure and thermal shock of molten metal during pouring and solidification, which can easily lead to sand layer detachment, collapse, and other problems that affect the shape and size of the casting.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vibration assembly for a crankshaft iron mold sand-coated casting line, comprising a vibration assembly disposed inside the casting mold body, for uniformly vibrating the sand filled into the casting mold body at multiple points.

[0006] The vibrating assembly includes a base plate, several sets of air holes opened on the side of the base plate, and a vibrating element disposed inside the several sets of air holes.

[0007] The vibrating component includes several sets of air ducts respectively disposed inside several sets of air holes, a rotating shaft respectively disposed rotatably inside several sets of air ducts, and fan blades disposed on the outer side of several sets of rotating shafts to drive the rotating shafts to rotate under the action of airflow. A flexible pad is fixedly disposed on the outer side of the base plate and on the outer side of the rotating shaft. A vibrating tube is disposed on the side of the flexible pad facing away from the base plate. A cam is fixedly disposed on the outer side of the rotating shaft and inside the vibrating tube. A paddle corresponding to the position of the cam is fixedly disposed inside the vibrating tube to paddle the vibrating tube to vibrate when the cam rotates.

[0008] Furthermore, an air pipe connected to several sets of air holes is fixed to the outer side of the base plate to provide an air source.

[0009] Furthermore, a control valve is provided on the outside of the trachea to control the airflow input.

[0010] Furthermore, the outer side of the base plate is provided with a connecting hole corresponding to the position of the rotating shaft, and the rotating shaft is rotatably disposed inside the connecting hole via a bearing.

[0011] Furthermore, the cam is an eccentric cam, and each set of the paddles consists of four pieces, which are arranged in a ring inside the vibrating pipe.

[0012] Furthermore, each group of fan blades consists of three blades, which are arranged in a ring on the outside of the rotating shaft.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This vibratory assembly for crankshaft iron mold sand-coated casting lines, by placing the vibratory components inside the casting mold body and utilizing multi-point uniform vibration, enables a more uniform distribution of the sand filling the mold. This helps avoid defects such as localized missing parts and shrinkage cavities in the casting caused by uneven sand accumulation, ensuring consistent cooling rates and solidification characteristics across all parts of the casting, thereby improving the overall quality of the casting. The vibration process rearranges the sand particles, forming a denser and more orderly structure, significantly improving the strength and corrosion resistance of the sand layer. During pouring, the dense sand layer can better withstand the pressure and thermal shock of the molten metal, reducing problems such as sand layer shedding and collapse, and ensuring the shape and dimensional accuracy of the casting. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the vibratory tamping component of this utility model;

[0017] Figure 3This is a partial schematic diagram of the vibratory tamping component of this utility model.

[0018] In the figure: 1. Casting mold body; 2. Vibration assembly; 21. Base plate; 22. Air hole; 23. Vibrating component; 231. Air duct; 232. Rotating shaft; 233. Air pipe; 234. Fan blade; 235. Flexible pad; 236. Vibration pipe; 237. Cam; 238. Paddle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0020] Please see Figure 1-2 In this embodiment, a vibration assembly for a crankshaft iron mold sand-coated casting line includes a vibration assembly 2 disposed inside the casting mold body 1, which is used to uniformly vibrate the sand filled into the casting mold body 1 at multiple points. Example

[0021] Based on Example 1, please refer to Figure 2-3 In this embodiment, the vibrating assembly 2 includes a base plate 21, several sets of air holes 22 opened on the side of the base plate 21, and vibrating elements 23 disposed inside the several sets of air holes 22. After the airflow enters from the air pipe 233, it flows along the air holes 22 and enters the interior of each air pipe 231. The air pipe 231 is disposed inside the air holes 22, providing a flow channel for the airflow, so that the airflow can be evenly distributed to each vibrating element 23.

[0022] The vibrating element 23 includes several sets of air ducts 231 respectively disposed inside several sets of air holes 22, a rotating shaft 232 respectively rotatably disposed inside several sets of air ducts 231, and fan blades 234 disposed on the outer side of several sets of rotating shafts 232 for driving the rotating shafts 232 to rotate under the action of airflow. A flexible pad 235 is fixedly disposed on the outer side of the base plate 21 and on the outer side of the rotating shaft 232. A vibrating tube 236 is disposed on the side of the flexible pad 235 facing away from the base plate 21. A cam 237 is fixedly disposed on the outer side of the rotating shaft 232 and inside the vibrating tube 236. A paddle 238 corresponding to the position of the cam 237 is fixedly disposed inside the vibrating tube 236 for plucking the paddle 238 when the cam 237 rotates to make the vibrating tube 236 vibrate.

[0023] In this embodiment, an air pipe 233 connected to several sets of air holes 22 is fixed on the outer side of the base plate 21 to provide an air source. A control valve is provided on the outer side of the air pipe 233 to control the airflow input. The air source is introduced into the vibrating assembly 2 through the air pipe 233. The air pipe 233 is connected to several sets of air holes 22 on the base plate 21. The control valve on the outer side of the air pipe 233 can control the airflow input so as to adjust the size and on / off of the airflow according to actual needs.

[0024] In this embodiment, the outer side of the base plate 21 is provided with a connecting hole corresponding to the position of the rotating shaft 232, and the rotating shaft 232 is rotatably mounted inside the connecting hole via a bearing. The cam 237 is an eccentric cam. Each set of paddles 238 consists of four pieces, arranged in a ring inside the vibrating tube 236. Each set of fan blades 234 consists of three pieces, arranged in a ring outside the rotating shaft 232. After the airflow enters the air duct 231, it will impact the fan blades 234 mounted on the rotating shaft 232 inside the air duct 231. Each set of rotating shafts 232 has three fan blades 234 arranged in a ring outside. Under the action of the airflow, the fan blades 234 will drive the rotating shaft 232 to rotate. The shape and angle design of the fan blades 234 enable the airflow to effectively drive its rotation, thereby achieving continuous rotation of the rotating shaft 232.

[0025] Furthermore, a cam 237 is fixed on the outer side of the rotating shaft 232. The cam 237 is an eccentric cam. When the rotating shaft 232 rotates, the cam 237 rotates accordingly. Inside the vibrating pipe 236, there are four paddles 238 corresponding to the position of the cam 237. Each set of paddles 238 consists of four paddles, which are arranged in a ring. During the rotation of the cam 237, its eccentric structure will periodically contact the paddles 238 and paddle the paddles 238, causing the paddles 238 to reciprocate. The reciprocating motion of the paddles 238 will drive the vibrating pipe 236 to vibrate.

[0026] Furthermore, the vibration of the vibrating pipe 236 can be transmitted to the sand in contact with it, thereby achieving the vibration effect on the sand. This vibration method can make the sand fill the various parts of the casting mold body 1 more tightly, improve the uniformity of the sand distribution, avoid defects such as voids and air holes, and ensure the quality of the casting.

[0027] It should be noted that the flexible pad 235, as the connecting component between the vibrating pipe 236 and the base plate 21, has sufficient margin for the vibrating pipe 236 to generate a swing amplitude due to its flexibility.

[0028] The working principle of the above embodiments is as follows:

[0029] Air is introduced into the vibrating assembly 2 through air pipe 233. Air pipe 233 is connected to several sets of air holes 22 on the base plate 21. The control valve on the outside of air pipe 233 can control the airflow input, so as to adjust the airflow size and on / off according to actual needs. After entering through air pipe 233, the airflow flows along the air holes 22 and enters the interior of each air pipe 231. The air pipe 231 is set inside the air holes 22, providing a flow channel for the airflow, so that the airflow can be evenly distributed to each vibrating component 23. After the airflow enters the air pipe 231, it will impact the fan blades 234 set on the rotating shaft 232 inside the air pipe 231. Each set of rotating shaft 232 has three fan blades 234 arranged in a ring on the outside. Under the action of airflow, the fan blades 234 will drive the rotating shaft 232 to rotate. The shape and angle design of the fan blades 234 enable the airflow to effectively drive its rotation, thereby realizing the rotation of the rotating shaft 232. As shaft 232 rotates continuously, a cam 237 is fixed to the outside of shaft 232. The cam 237 is an eccentric cam. When shaft 232 rotates, cam 237 rotates accordingly. Inside vibrating pipe 236, there are four paddles 238 corresponding to the position of cam 237. Each set of paddles 238 consists of four paddles arranged in a ring. During rotation, the eccentric structure of cam 237 periodically contacts and moves paddles 238, causing paddles 238 to reciprocate. The reciprocating motion of paddles 238 drives vibrating pipe 236. The vibration of vibrating pipe 236 can be transmitted to the sand in contact with it, thereby achieving the vibration effect on the sand. This vibration method can make the sand fill the various parts of casting mold body 1 more tightly, improve the uniformity of sand distribution, avoid defects such as voids and air holes, and ensure the quality of castings.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A vibratory assembly for a crankshaft iron mold sand-coated casting line, characterized in that: It includes a vibration assembly (2) installed inside the casting mold body (1) to uniformly vibrate the sand filling the casting mold body (1) at multiple points. The vibrating assembly (2) includes a base plate (21), a number of air holes (22) opened on the side of the base plate (21), and a vibrating element (23) disposed inside the number of air holes (22). The vibrating element (23) includes several sets of air ducts (231) respectively disposed inside several sets of air holes (22), a rotating shaft (232) respectively rotatably disposed inside several sets of air ducts (231), and fan blades (234) are provided on the outer side of several sets of rotating shafts (232) for driving the rotating shafts (232) to rotate under the action of airflow. A flexible pad (235) is fixedly disposed on the outer side of the base plate (21) and on the outer side of the rotating shaft (232). A vibrating tube (236) is disposed on the side of the flexible pad (235) facing away from the base plate (21). A cam (237) is fixedly disposed on the outer side of the rotating shaft (232) and inside the vibrating tube (236). A paddle (238) corresponding to the position of the cam (237) is fixedly disposed inside the vibrating tube (236) for paddle (238) to make the vibrating tube (236) vibrate when the cam (237) rotates.

2. The vibratory assembly for a crankshaft iron mold sand-coated casting line according to claim 1, characterized in that: The outer side of the base plate (21) is fixed with an air pipe (233) that communicates with a number of air holes (22) to provide an air source.

3. A vibratory assembly for a crankshaft iron mold sand-coated casting line according to claim 2, characterized in that: A control valve is provided on the outside of the air pipe (233) to control the airflow input.

4. A vibratory assembly for a crankshaft iron mold sand-coated casting line according to claim 3, characterized in that: The outer side of the base plate (21) is provided with a connecting hole corresponding to the position of the rotating shaft (232), and the rotating shaft (232) is rotatably disposed inside the connecting hole via a bearing.

5. A vibratory assembly for a crankshaft iron mold sand-coated casting line according to claim 4, characterized in that: The cam (237) is an eccentric cam, and the number of each set of the paddles (238) is four, which are arranged in a ring inside the vibrating tube (236).

6. A vibratory assembly for a crankshaft iron mold sand-coated casting line according to claim 5, characterized in that: Each set of fan blades (234) consists of three blades, arranged in a ring on the outside of the rotating shaft (232).

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