A lower core box with good protective performance

Abstract

This utility model relates to the field of cold core box technology and discloses a lower core box with good protective performance. It includes a lower core box body, an internal cavity adjustment component, and a ventilation groove on the outer surface of the lower core box body. An air blowing pipe is fixedly connected to the outer surface of the lower core box body. In this utility model, gas is supplied to the ventilation groove through the air blowing pipe via an external ventilation device using the air channel adjustment component. The gas then enters the lower core box through an adjustment slide groove for cleaning the cavity, assisting in demolding, and cooling the sand core. An electric outer baffle moves along the mold closing positioning rod via an electrically controlled slider, opening and closing the ventilation groove for easy cleaning and emptying of clogged sand cores and rapid cooling of the sand core. A second electric lifting rod further assists in adjusting the height of the inner baffle, thereby achieving precise control of the air channel size and gas flow direction to adapt to the needs of different process stages and enhance the protection and process performance of the lower core box.

Description

Technical Field

[0001] This utility model relates to the field of cold core box technology, and in particular to a lower core box with good protective performance. Background Technology

[0002] In modern casting production, cold box core making technology has become one of the mainstream core making processes due to its significant advantages of high efficiency, precision, and environmental friendliness. Cold box core making involves introducing gas into the core box to solidify the sand core. Compared to traditional hot box core making, it eliminates the need for heating, greatly reducing energy consumption and effectively reducing harmful gas emissions, aligning with the concept of green manufacturing. Furthermore, the sand cores produced by cold box core making have high dimensional accuracy and good surface quality, significantly improving the quality of castings.

[0003] The lower core box, a key component of the cold core box, is a crucial tooling for sand core forming in casting production. Its structural design directly determines the quality of the sand core and the casting efficiency.

[0004] While existing core boxes can perform basic operations during sand core production, their simple air duct design and uneven gas distribution lead to incomplete cavity cleaning, difficulty in demolding, and low sand core cooling efficiency, affecting sand core molding quality and production cycle. Furthermore, their fixed cavity structure makes it difficult to quickly adapt to the production needs of sand cores of different specifications. Frequent core box replacements not only increase production costs but also reduce production efficiency. Therefore, a core box with good protective performance is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a lower core box with good protective performance. It aims to solve the problems in the prior art, such as the simple air channel design of the lower core box, uneven gas distribution, incomplete cavity cleaning, difficulty in demolding, and low sand core cooling efficiency, which affect the sand core molding quality and production cycle. In addition, its cavity structure is fixed, making it difficult to quickly adapt to the production needs of sand cores of different specifications. Frequent replacement of the core box not only increases production costs but also reduces production efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a lower core box with good protective performance, comprising a lower core box body, a cavity adjustment component disposed inside the lower core box body, a ventilation groove formed on the outer surface of the lower core box body, an air blowing pipe fixedly connected to the outer surface of the lower core box body, a mold closing positioning rod fixedly connected to the outer periphery of the lower core box body, a sealing strip fixedly connected to the upper surface of the lower core box body, and an air passage adjustment component disposed between the lower core box body and the mold closing positioning rod;

[0007] The air passage adjustment assembly includes an adjustment slide groove, a limiting slide groove, and an electric outer baffle. The adjustment slide groove is opened on the inner surface of the lower core box body, and the electric outer baffle is opened on the outer surface of the lower core box body. The electric outer baffle is movably sleeved on the outside of the mold closing positioning rod. An adjustment inner baffle is slidably connected to the inner side of the adjustment slide groove, and a connecting frame is fixedly connected to the inner side of the adjustment inner baffle. A second electric lifting rod is fixedly connected to the bottom of the connecting frame.

[0008] As a further description of the above technical solution:

[0009] The adjustment slide is provided in four parts, which are distributed around the inner surface of the lower core box body, and the four adjustment slides are connected to the interior of the ventilation groove.

[0010] As a further description of the above technical solution:

[0011] There are four second electric lifting rods, and the bottom ends of the four second electric lifting rods are all fixedly connected to the bottom end of the inner wall of the lower core box body.

[0012] As a further description of the above technical solution:

[0013] An electrically controlled slider is fixedly connected to the inner side of the electric outer frame, and the outer side of the electrically controlled slider is slidably connected to the inner wall of the limiting groove.

[0014] As a further description of the above technical solution:

[0015] The cavity adjustment assembly includes a first electric lifting rod, the bottom end of which is fixedly connected to the bottom end of the inner wall of the lower core box body. There are four first electric lifting rods, and the top ends of the four first electric lifting rods are fixedly connected to a cavity adjustment base plate.

[0016] As a further description of the above technical solution:

[0017] The outer side of the cavity adjustment base plate is attached to the inner side of the lower core box body.

[0018] As a further description of the above technical solution:

[0019] One end of the air blowing pipe is connected to the inner wall of the ventilation groove, and the other end of the air blowing pipe is fixedly connected to an external ventilation device.

[0020] As a further description of the above technical solution:

[0021] There are four ventilation slots and four air blowing pipes, and the four ventilation slots and air blowing pipes are set one-to-one.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, through the air passage adjustment component, gas is delivered to the air passage through the air blowing pipe via an external air ventilation device. The gas then enters the lower core box through the adjustment slide groove for cleaning the cavity, assisting in demolding, and cooling the sand core. The electric outer baffle moves along the mold closing positioning rod by the sliding of the electric control slider, which can open and close the air passage, making it easy to clean and empty the blocked sand core and quickly cool the sand core. The height position of the inner baffle is further adjusted by the second electric lifting rod, thereby achieving precise control of the air passage size and gas flow direction to meet the needs of different process steps and enhance the protection and process performance of the lower core box.

[0024] 2. In this utility model, by using the cavity adjustment component and the four first electric lifting rods working together, the height of the cavity inside the lower core box body can be flexibly adjusted by synchronously lifting the cavity adjustment base plate, so as to meet the production needs of sand cores of different sizes and improve the versatility and production adaptability of the equipment. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a lower core box with good protective performance proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the adjustment structure at the vent groove of the lower core box with good protective performance proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the internal structure of a lower core box with good protective performance proposed in this utility model, taken from a front view section.

[0028] Figure 4 This is a schematic diagram of the internal structure of the lower core box with good protective performance proposed in this utility model, viewed from the side.

[0029] Legend:

[0030] 1. Lower core box body; 2. Cavity adjustment assembly; 21. First electric lifting rod; 22. Cavity adjustment base plate; 3. Ventilation groove; 4. Air blowing pipe; 5. Air passage adjustment assembly; 51. Adjustment slide; 52. Adjustment inner baffle; 53. Connecting frame; 54. Second electric lifting rod; 55. Limiting slide; 56. Electric outer baffle frame; 6. Mold closing positioning rod; 7. Sealing strip. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-3 This utility model provides an embodiment of a lower core box with good protective performance, including a lower core box body 1. A cavity adjustment component 2 is provided inside the lower core box body 1. The cavity adjustment component 2 includes a first electric lifting rod 21. The bottom end of the first electric lifting rod 21 is fixedly connected to the bottom end of the inner wall of the lower core box body 1. There are four first electric lifting rods 21. The top ends of the four first electric lifting rods 21 are fixedly connected to a cavity adjustment base plate 22. The outer side of the cavity adjustment base plate 22 is attached to the inner side of the lower core box body 1. The four first electric lifting rods 21 work together to flexibly adjust the height of the cavity inside the lower core box body 1 by synchronously raising and lowering the cavity adjustment base plate 22, so as to meet the production needs of sand cores of different sizes and improve the versatility and production adaptability of the equipment.

[0033] Reference Figure 1 The lower core box body 1 is fixedly connected to the outer periphery of the mold closing positioning rod 6. The mold closing positioning rod 6 can precisely cooperate with the corresponding structure of the upper core box to achieve quick and accurate positioning of the upper and lower core boxes, thereby improving the mold closing efficiency. The upper surface of the lower core box body 1 is fixedly connected to the sealing strip 7. The sealing strip 7 can form a tight sealing structure after the mold is closed, preventing sand leakage and air leakage during the sand core making process, and ensuring the sand core forming quality.

[0034] Reference Figures 2-4The outer surface of the lower core box body 1 is provided with ventilation grooves 3. The ventilation grooves 3 are machined by precision milling, and their inner wall bottom end has a sloping structure. This design helps to easily remove residual impurities and sand particles during later cleaning using special tools. Air blowing pipes 4 are fixedly connected to the outer surface of the lower core box body 1. There are four ventilation grooves 3 and four air blowing pipes 4, and the four ventilation grooves 3 and air blowing pipes 4 are set one-to-one. This corresponding arrangement ensures that the gas can be evenly distributed to all key parts of the lower core box, avoiding the impact of uneven gas distribution on cleaning, demolding and cooling effects. One end of the air blowing pipe 4 passes through... The air blowing pipe 4 is connected to the inner wall of the ventilation groove 3. The connection between the air blowing pipe 4 and the ventilation groove 3 is sealed by welding to prevent gas leakage and ensure gas transmission efficiency. The other end of the air blowing pipe 4 is fixedly connected to the external ventilation equipment. The air blowing pipe 4 and the external ventilation equipment are connected by a quick connector to facilitate quick installation and disassembly of the equipment and improve work efficiency. An air passage adjustment component 5 is provided between the lower core box body 1 and the mold closing positioning rod 6. The air passage adjustment component 5 is the core component for the entire lower core box to achieve precise gas control. Its existence allows the lower core box to flexibly adjust the gas delivery state in different process stages.

[0035] Furthermore, the air duct adjustment assembly 5 includes an adjustment slide 51, a limiting slide 55, and an electric outer baffle 56. Four adjustment slides 51 are provided, distributed around the inner surface of the lower core box body 1, and are connected to the interior of the ventilation groove 3. This arrangement allows gas to smoothly and evenly enter the lower core box from the ventilation groove 3, providing a stable air source for subsequent cleaning, demolding, and cooling operations. The adjustment slides 51 are located on the inner surface of the lower core box body 1. The precision of the machining directly affects the smoothness of the sliding of the inner baffle 52. Therefore, dimensional tolerances and surface roughness are strictly controlled during the machining process. The electric outer baffle 56 is opened on the outer surface of the lower core box body 1. The electric outer baffle 56 is movably sleeved on the outside of the mold closing positioning rod 6. The electric outer baffle 56 and the mold closing positioning rod 6 adopt a clearance fit, which not only ensures that the electric outer baffle 56 can move flexibly, but also plays a certain positioning role to prevent it from deviating during movement. An electric control slider is fixedly connected to the inner side of the electric outer baffle 56, and the outer side of the electric control slider is slidably connected to the limit. The inner wall of the sliding groove 55 is connected to the inner wall of the electric outer baffle 56 via a high-precision limiting sliding groove 55. Upon receiving an electrical signal, it can achieve precise and stable sliding, thereby controlling the opening and closing of the electric outer baffle 56 on the outer side of the vent 3. An adjusting inner baffle 52 is slidably connected to the inner side of the adjusting groove 51. The edge of the adjusting inner baffle 52 is specially treated and fitted with wear-resistant rubber strips, which reduces friction with the adjusting groove 51 and improves sealing performance to prevent gas leakage. A connecting frame 53 is fixedly connected to the inner side of the adjusting inner baffle 52. Made of high-strength metal materials, its structural design fully considers mechanical properties, which can stably support the adjustable inner baffle 52 and transmit the force of the second electric lifting rod 54. The bottom of the connecting frame 53 is fixedly connected to the second electric lifting rod 54. There are four second electric lifting rods 54. The bottom ends of the four second electric lifting rods 54 are all fixedly connected to the bottom end of the inner wall of the lower core box body 1. The four second electric lifting rods 54 work synchronously. By precisely controlling the lifting height, the height of the adjustable inner baffle 52 can be accurately adjusted, thereby changing the size of the air passage and the gas flow direction.

[0036] Working Principle: During use, based on the required sand core size, the four first electric lifting rods 21 synchronously raise and lower the cavity adjustment base plate 22, flexibly adjusting the height of the internal cavity of the lower core box body 1 to accommodate sand cores of different specifications. During mold closing, the mold closing positioning rods 6 on the outer periphery of the lower core box body 1 precisely match the corresponding structure of the upper core box, quickly and accurately completing the positioning of the upper and lower core boxes. The sealing strip 7 on the upper surface forms a sealing structure after mold closing, preventing sand leakage and air loss, ensuring the quality of the sand core molding. During production, external ventilation equipment delivers gas to the ventilation slots 3 through the air blowing pipe 4. The four corresponding ventilation slots 3 and air blowing pipes 4 ensure uniform gas distribution. The welded seals and quick-connect designs at the joints ensure both transmission efficiency and ease of equipment disassembly and assembly. Gas flows through the ventilation slots 3 into the four... The circumferentially distributed and interconnected adjusting grooves 51 enter the lower core box. During cavity cleaning, high-speed gas blows out residual sand particles and impurities. During demolding, the gas forms an air cushion between the sand core and the lower core box, reducing friction and aiding demolding. When cooling the sand core, the gas carries away heat and accelerates cooling. At the same time, the air passage adjusting component 5 plays a core role. The electric outer baffle 56 slides along the mold closing positioning rod 6 in the limiting groove 55 via an electrically controlled slider, controlling the opening and closing of the ventilation groove 3 to facilitate cleaning of clogged sand cores and accelerate cooling. The four second electric lifting rods 54 work synchronously, driving the connecting frame 53 to precisely adjust the height of the inner baffle 52, changing the size of the air passage and the gas flow direction to adapt to the gas flow and direction requirements of different casting processes, enhancing the protection and process performance of the lower core box, ensuring efficient completion of each process step, and extending the service life of the lower core box.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A core box with good protection performance, comprising a core box main body (1), characterized in that: The lower core box body (1) is provided with a cavity adjustment component (2) inside. The outer surface of the lower core box body (1) is provided with a ventilation groove (3). An air blowing pipe (4) is fixedly connected to the outer surface of the lower core box body (1). A mold closing positioning rod (6) is fixedly connected to the outer periphery of the lower core box body (1). A sealing strip (7) is fixedly connected to the upper surface of the lower core box body (1). An air passage adjustment component (5) is provided between the lower core box body (1) and the mold closing positioning rod (6). The airway adjustment assembly (5) includes an adjustment slide (51), a limiting slide (55), and an electric outer baffle (56). The adjustment slide (51) is opened on the inner surface of the lower core box body (1), and the electric outer baffle (56) is opened on the outer surface of the lower core box body (1). The electric outer baffle (56) is movably sleeved on the outside of the mold closing positioning rod (6). An adjustment inner baffle (52) is slidably connected to the inner side of the adjustment slide (51), and a connecting frame (53) is fixedly connected to the inner side of the adjustment inner baffle (52). A second electric lifting rod (54) is fixedly connected to the bottom of the connecting frame (53).

2. The core box with good protection performance according to claim 1, characterized in that: The four adjustment grooves (51) are provided and are distributed around the inner surface of the lower core box body (1). The four adjustment grooves (51) are connected to the interior of the ventilation groove (3).

3. The core box with good protection performance according to claim 1, characterized in that: There are four second electric lifting rods (54), and the bottom ends of the four second electric lifting rods (54) are all fixedly connected to the bottom end of the inner wall of the lower core box body (1).

4. The core box with good protection performance according to claim 1, characterized in that: The electric outer baffle (56) is fixedly connected to an electric control slider on its inner side, and the outer side of the electric control slider is slidably connected to the inner wall of the limiting groove (55).

5. A lower core box with good protective performance according to claim 1, characterized in that: The cavity adjustment assembly (2) includes a first electric lifting rod (21), the bottom end of which is fixedly connected to the bottom end of the inner wall of the lower core box body (1). There are four first electric lifting rods (21), and the top ends of the four first electric lifting rods (21) are fixedly connected to a cavity adjustment base plate (22).

6. The core box with good protection performance according to claim 5, characterized in that: The outer side of the cavity adjustment base plate (22) is attached to the inner side of the lower core box body (1).

7. The core box with good protection performance according to claim 1, characterized in that: One end of the air blowing pipe (4) is connected through the inner wall of the ventilation groove (3), and the other end of the air blowing pipe (4) is fixedly connected to an external ventilation device.

8. The core box with good protection performance according to claim 7, characterized in that: The ventilation slots (3) and air blowing pipes (4) are provided in fours, and the four ventilation slots (3) and air blowing pipes (4) are set in a one-to-one correspondence.

Images