Balance shaft sand core mold
By combining a motor-driven swing arm and a brush cylinder with an automated collection box design, the problem of low sand core cleaning efficiency after balance shaft casting is solved. This enables rapid cleaning of sand cores inside the mold and convenient disassembly of the collection box, improving production efficiency and practicality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2026-03-13
AI Technical Summary
In the existing technology, after the balance shaft is cast, the sand core inside the mold is difficult to clean quickly, and the cleaning process relies on manual operation, which is inefficient, increases costs and time consumption. At the same time, disassembling the collection box is inconvenient, which reduces the practicality of the mold.
The combination of a motor-driven swing arm and a brush cylinder cleans the sand core inside the mold through vibration and rotation. Combined with an automated collection box design, it enables rapid cleaning and convenient disassembly of the sand core.
It improves the production efficiency of balance shaft sand core molds, reduces cleaning costs and time consumption, simplifies the disassembly process of collection boxes, and enhances the practicality of molds.
Smart Images
Figure CN223989059U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of balance shaft sand core mold technology, and in particular to a balance shaft sand core mold. Background Technology
[0002] Balance shafts are key components in mechanical systems used to reduce vibration and maintain balance, especially in engines and rotating equipment. Their main function is to neutralize unbalanced forces caused by rotating components such as crankshafts and pistons through symmetrically arranged masses, thereby reducing system vibration and improving the stability and comfort of the machinery. Sand cores are temporary molds used in the casting process to create cavities, holes, or complex internal structures in castings. Sand cores are generally composed of materials such as sand, binder, and water, and are manufactured using specific processes. They maintain their shape during the pouring of molten metal at high temperatures and are removed after the casting cools.
[0003] While current technology offers many advantages, its disadvantages lie in the following: During the casting process of balance shafts, sand cores are added inside the mold for pouring to ensure the structure and shape of the casting. However, after the balance shaft casting is completed, the sand cores inside the mold are difficult to clean quickly. This is mainly because the sand cores are often tightly bonded to the casting, and casting materials easily adhere to their surface. This makes the cleaning work tedious and time-consuming. Current cleaning methods usually rely on manual operation, which is not only inefficient but also prone to worker fatigue due to its complexity, increasing cleaning costs and time consumption, thereby reducing the overall production efficiency of balance shaft sand core molds. Furthermore, when cleaning the sand core dust, it is not convenient to quickly disassemble and replace the collection box. Using external connectors such as bolts to disassemble and assemble the collection box is extremely troublesome, reducing the practicality of balance shaft sand core molds. Utility Model Content
[0004] The purpose of this invention is to address the problem in existing technologies where, during the casting process of a balance shaft, a sand core is added inside the mold for pouring to ensure the structure and shape of the casting. However, after the balance shaft casting is completed, the sand core inside the mold is difficult to clean quickly. This is mainly because the sand core is often tightly bonded to the casting, and casting materials easily adhere to its surface, making the cleaning work tedious and time-consuming. Current cleaning methods usually rely on manual operation, which is not only inefficient but also prone to worker fatigue due to its complexity, increasing cleaning costs and time consumption, thereby reducing the overall production efficiency of the balance shaft sand core mold. Furthermore, when cleaning the removed sand core dust, it is inconvenient to quickly disassemble and replace the collection box, requiring the use of external connectors such as bolts for disassembling and assembling the collection box, which is extremely troublesome and reduces the practicality of the balance shaft sand core mold.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A balance shaft sand core mold: comprising a base plate, a fixing plate fixedly connected to the top of the base plate, an electric telescopic rod fixedly installed at the center of the top of the fixing plate, a motor fixedly installed at the output end of the electric telescopic rod, a brush cylinder fixedly connected to the output end of the motor, a shell fixedly connected to the top of the base plate, a fixing block fixedly connected to the top of the base plate near the edge, a striking rod movably embedded inside the fixing block, a swing rod movably connected to the outer surface of the striking rod, a vertical plate fixedly connected to the top of the base plate, a support plate fixedly connected to one side of the outer surface of the vertical plate, a motor fixedly installed on the top of the support plate, a swing rod 2 fixedly connected to the output end of the motor 3, and the outer surface of the swing rod 2 movably connected to the outer surface of the swing rod 1.
[0006] In a preferred embodiment, two connecting plates are fixedly connected to the top of the base plate, and a round shaft is movably connected to one side of the inner wall of each of the two connecting plates.
[0007] The technical effect of adopting the above-mentioned further solution is that the second motor gradually drives the entire circular shaft to rotate.
[0008] In a preferred embodiment, a mold block is fixedly connected to one end of each of the two circular shafts, and a support plate is fixedly connected to one side of the outer surface of one of the connecting plates.
[0009] The technical advantage of adopting the above-mentioned further solution is that the tray facilitates the installation of motor 2.
[0010] In a preferred embodiment, a second motor is fixedly mounted on the top of the tray, and the output end of the second motor is fixedly connected to one end of one of the round shafts.
[0011] The technical effect of adopting the above-mentioned further solution is that motor two can easily drive the circular shaft to rotate.
[0012] In a preferred embodiment, two short plates are fixedly connected to the bottom of the base plate, and a collection box is slidably connected to the inner wall of the two short plates.
[0013] The technical effect of adopting the above-mentioned further solution is that the sand core ash inside the mold block is poured into the collection box.
[0014] In a preferred embodiment, an L-shaped plate is fixedly connected to one side of the outer surface of each of the two short plates, and multiple pins are movably embedded inside the L-shaped plate.
[0015] The technical effect of adopting the above-mentioned further solution is that multiple pins no longer need to be inserted into the interior of the collection box.
[0016] In a preferred embodiment, multiple springs are fixedly connected to the outer surfaces of both L-shaped plates, and a pull plate is fixedly connected to one end of each spring.
[0017] The technical effect of adopting the above-mentioned further solution is that the two pull plates are affected by the tension of multiple springs.
[0018] In a preferred embodiment, one side of the outer surface of the pull plate is fixedly connected to one end of a plurality of pin posts.
[0019] The technical effect of adopting the above-mentioned further solution is that it pushes multiple pins into the interior of the collection box.
[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0021] 1. This utility model first installs the pre-made sand core column inside the mold block, then pours in the material, and casts it using the sand core column and the mold block's balance shaft. After casting, the worker removes the formed balance shaft. After removal, the worker turns on the external power supply of motor three and starts motor three using the controller. Motor three gradually drives swing rod two to rotate in a circular motion. As swing rod two continues to rotate, the swing rod initially swings back and forth. Through the continuous swinging of swing rod one, the swing rod initially pulls the striking rod to repeatedly strike the mold block, causing vibration inside the mold block, dislodging the sand core adhering to the inner wall of the mold block. After a period of vibration, the worker turns off motor three and moves the striking rod away from the mold block. Then, the staff used the controller to start the electric telescopic rod. The output end of the electric telescopic rod gradually pushed the motor and the brush cylinder to descend vertically, so that the brush cylinder was completely inside the mold block. Then, the controller started the motor, which initially drove the brush cylinder to rotate at high speed on the inner wall of the mold block. The brush cylinder swept off the sand core dust adhering to the inner wall of the mold block. After cleaning, the staff turned on the external power of the motor and started the motor using the controller. The motor gradually drove the circular shaft to rotate, and the mold block rotated to a certain degree, so that the sand core dust inside the mold block was poured into the collection box. This facilitated the cleaning of the sand core inside the mold, reduced cleaning costs and time consumption, and improved the overall production efficiency of the balance shaft sand core mold.
[0022] 2. In this utility model, after cleaning, when it is necessary to quickly disassemble the collection box, the worker manually pulls out two pull plates to prevent multiple pins from being inserted into the collection box. Then, the worker manually pulls out the collection box and pours out the sand core dust. When it is necessary to install or replace the collection box, the worker directly inserts the collection box horizontally into the two short plates, and then releases the two pull plates. The pull plates are affected by the tension of multiple springs, which pushes multiple pins into the collection box, thereby completing the overall positioning of the collection box. This facilitates quick disassembly and replacement of the collection box without the need for external connecting parts such as bolts. It is extremely simple and improves the practicality of the balance shaft sand core mold. Attached Figure Description
[0023] Figure 1 A schematic diagram of the main structure of a balance shaft sand core mold provided by this utility model;
[0024] Figure 2 A bottom view of the structure of a balance shaft sand core mold provided by this utility model;
[0025] Figure 3 A side view of a balance shaft sand core mold provided by this utility model;
[0026] Figure 4 This utility model provides a balance shaft sand core mold. Figure 3 A magnified structural diagram of point A in the middle.
[0027] Legend:
[0028] 1. Base plate; 101. Fixing plate; 102. Electric telescopic rod; 103. Motor 1; 104. Brush tube; 105. Round shaft; 106. Mold block; 107. Motor 2; 108. Outer shell; 109. Second support plate; 110. Fixing block; 111. Striking rod; 112. Swing rod 1; 113. Vertical plate; 114. Swing rod 2; 115. Motor 3; 116. First support plate; 117. Connecting plate; 2. Collection box body; 201. Short plate; 202. L-shaped plate; 203. Pin post; 204. Pull plate; 205. Spring. Detailed Implementation
[0029] 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.
[0030] Example 1, please refer to Figure 1 - Figure 4 This utility model provides a technical solution: a balance shaft sand core mold, including a base plate 1, a fixing plate 101 fixedly connected to the top of the base plate 1, an electric telescopic rod 102 fixedly installed at the center of the top of the fixing plate 101, a motor 103 fixedly installed at the output end of the electric telescopic rod 102, a brush cylinder 104 fixedly connected to the output end of the motor 103, a shell 108 fixedly connected to the top of the base plate 1, a fixing block 110 fixedly connected to the top of the base plate 1 near the edge, a striking rod 111 movably embedded inside the fixing block 110, a swing rod 112 movably connected to the outer surface of the striking rod 111, a vertical plate 113 fixedly connected to the top of the base plate 1, and one side of the outer surface of the vertical plate 113... A first support plate 116 is fixedly connected. A motor 3 115 is fixedly installed on the top of the first support plate 116. A swing rod 2 114 is fixedly connected to the output end of the motor 3 115. The outer surface of the swing rod 2 114 is movably connected to the outer surface of the swing rod 1 112. Two connecting plates 117 are fixedly connected to the top of the base plate 1. A round shaft 105 is movably connected to one side of the inner wall of each of the two connecting plates 117. A mold block 106 is fixedly connected to one end of each of the two round shafts 105. A second support plate 109 is fixedly connected to one side of the outer surface of one of the connecting plates 117. A motor 2 107 is fixedly installed on the top of the second support plate 109. The output end of the motor 2 107 is fixedly connected to one end of one of the round shafts 105.
[0031] In this embodiment, the pre-made sand core column is first installed inside the mold block 106, followed by material pouring. The sand core column and the mold block 106 are then used to cast a balance shaft. After casting, the worker removes the formed balance shaft. After removal, the worker turns on the external power supply to motor 3 115 and starts motor 3 115 using the controller. Motor 3 115 gradually drives swing rod 2 114 to rotate in a circular motion. As swing rod 2 114 continues to rotate, swing rod 1 112 begins to oscillate back and forth. Through the continuous oscillation of swing rod 1 112, it pulls the striking rod 111 to repeatedly strike the mold block 106. This causes vibration inside the mold block 106, dislodging the sand core adhering to the inner wall of the mold block 106. After a period of vibration, the worker turns off motor 3 115 and moves the striking rod 111 away from the mold block 106. Then, the work... The operator uses a controller to start the electric telescopic rod 102. The output end of the electric telescopic rod 102 gradually pushes the motor 103 and the brush cylinder 104 to descend vertically, so that the brush cylinder 104 is fully inserted into the mold block 106. Then, the operator uses the controller to start the motor 103, which drives the brush cylinder 104 to rotate at high speed on the inner wall of the mold block 106. The brush cylinder 104 sweeps off the sand core dust adhering to the inner wall of the mold block 106. After cleaning, the operator turns on the external power of the motor 2 107 and starts the motor 2 107 with the controller. The motor 2 107 gradually drives the circular shaft 105 to rotate, and the mold block 106 rotates to a 180-degree angle, so that the sand core dust inside the mold block 106 is poured into the collection box 2. This makes it easier to clean the sand core inside the mold, reduces cleaning costs and time consumption, and improves the overall production efficiency of the balance shaft sand core mold.
[0032] Example 2, as Figure 1 - Figure 4 As shown, two short plates 201 are fixedly connected to the bottom of the base plate 1. A collection box 2 is slidably connected to the inner wall of the two short plates 201. An L-shaped plate 202 is fixedly connected to one side of the outer surface of each of the two short plates 201. Multiple pins 203 are movably embedded inside the L-shaped plate 202. Multiple springs 205 are fixedly connected to the outer surface of each of the two L-shaped plates 202. A pull plate 204 is fixedly connected to one end of each spring 205. One side of the outer surface of the pull plate 204 is fixedly connected to one end of each pin 203.
[0033] In this embodiment, after cleaning, when it is necessary to quickly disassemble the collection box 2, the worker manually pulls out the two pull plates 204 so that the multiple pins 203 are no longer inserted into the inside of the collection box 2. Then, the worker manually pulls out the collection box 2 and pours out the sand core dust in the collection box 2. When it is necessary to install or replace the collection box 2, the worker directly inserts the collection box 2 horizontally into the two short plates 201, and then releases the two pull plates 204. The two pull plates 204 are affected by the tension of multiple springs 205, and begin to push the multiple pins 203 into the inside of the collection box 2, thereby completing the overall positioning of the collection box 2. This facilitates quick disassembly and replacement of the collection box without the need for external connecting parts such as bolts. It is extremely simple and improves the practicality of the balance shaft sand core mold.
[0034] Working principle: In use, the pre-made sand core column is first installed inside the mold block 106, and then the material is poured in. The sand core column and the mold block 106 are used to cast the balance shaft. After casting, the worker removes the formed balance shaft. Then, the worker turns on the external power supply to motor 3 115 and starts motor 3 115 using the controller. Motor 3 115 gradually drives the swing arm 2 114 to rotate in a circular motion. As the swing arm 2 114 continues to rotate, the swing arm 1 112 begins to oscillate back and forth. Through the continuous oscillation of the swing arm 1 112, the swing arm 1 112 begins to pull the striking rod 111. The mold block 106 is repeatedly struck, causing vibrations inside the mold block 106. This vibration dislodges the sand core adhering to the inner wall of the mold block 106. After a period of vibration, the operator turns off motor 115 and moves the striking rod 111 away from the mold block 106. Then, the operator uses the controller to start the electric telescopic rod 102. The output end of the electric telescopic rod 102 gradually pushes motor 103 and brush cylinder 104 to descend vertically as a whole, allowing the brush cylinder 104 to fully enter the mold block 106. Subsequently, the operator uses the controller to start motor 103, which then drives the brush cylinder 104 to rotate at high speed within the inner wall of the mold block 106. The sand core dust adhering to the inner wall of the mold block 106 is swept off using the brush tube 104. After cleaning, the operator turns on the external power supply of the second motor 107 and starts the motor 107 using the controller. The second motor 107 gradually drives the circular shaft 105 to rotate, causing the mold block 106 to rotate 180 degrees. This allows the sand core dust inside the mold block 106 to be poured into the collection box 2, thus facilitating the cleaning of the sand core inside the mold, reducing cleaning costs and time consumption, and improving the overall production efficiency of the balance shaft sand core mold. After cleaning, when it is necessary to quickly disassemble the collection box 2, the operator manually pulls out two pull plates 204 to allow multiple... The pins 203 are no longer inserted into the collection box 2. Then, the staff manually pulls out the collection box 2 and pours out the sand core ash inside. When it is necessary to install or replace the collection box 2, the staff directly inserts the collection box 2 horizontally into the two short plates 201, and then releases the two pull plates 204. The two pull plates 204 are affected by the tension of multiple springs 205, which pushes the multiple pins 203 into the collection box 2, thereby completing the overall positioning of the collection box 2. This facilitates quick disassembly and replacement of the collection box without the need for external connecting parts such as bolts. It is extremely simple and improves the practicality of the balance shaft sand core mold.
[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A balanced axle sand core mold comprising a base plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected with a fixed plate (101), the top center of the fixed plate (101) is fixedly installed with an electric telescopic rod (102), the output end of the electric telescopic rod (102) is fixedly installed with a motor one (103), the output end of the motor one (103) is fixedly connected with a brush cylinder (104), the top of the bottom plate (1) is fixedly connected with a shell (108), the top of the bottom plate (1) is fixedly connected with a fixed block (110) near the edge, the inside of the fixed block (110) is movably embedded with a knocking rod (111), the outer surface of the knocking rod (111) is movably connected with a swing rod one (112), the top of the bottom plate (1) is fixedly connected with a vertical plate (113), one side of the outer surface of the vertical plate (113) is fixedly connected with a first supporting plate (116), the top of the first supporting plate (116) is fixedly installed with a motor three (115), the output end of the motor three (115) is fixedly connected with a swing rod two (114), the outer surface of the swing rod two (114) is movably connected on the outer surface of the swing rod one (112).
2. A balanced axle sand core mold as defined in claim 1 wherein: The top of the bottom plate (1) is fixedly connected with two connecting plates (117), and the inner wall of the two connecting plates (117) is movably connected with a circular shaft (105).
3. A balanced axle sand core mold as defined in claim 2 wherein: One end of the two circular shafts (105) is fixedly connected with a mold block (106), and one side of the outer surface of one of the connecting plates (117) is fixedly connected with a second supporting plate (109).
4. A balanced axle sand core mold in accordance with claim 3 wherein: The top of the second supporting plate (109) is fixedly installed with a motor two (107), and the output end of the motor two (107) is fixedly connected with one end of one of the circular shafts (105).
5. A balanced axle sand core mold in accordance with claim 1 wherein: The bottom of the bottom plate (1) is fixedly connected with two short plates (201), and the inner wall of the two short plates (201) is slidably connected with a collecting box body (2).
6. A balanced axle sand core mold in accordance with claim 5 wherein: One side of the outer surface of the two short plates (201) is fixedly connected with an L-shaped plate (202), and the inside of the L-shaped plate (202) is movably embedded with a plurality of latch columns (203).
7. A balanced axle sand core mold in accordance with claim 6 wherein: The outer surface of the two L-shaped plates (202) is fixedly connected with a plurality of springs (205), and one end of the plurality of springs (205) is fixedly connected with a pull plate (204).
8. A balanced axle sand core mold in accordance with claim 7 wherein: One side of the outer surface of the pull plate (204) is fixedly connected with one end of the plurality of latch columns (203).