A cold water distribution structure for the top mold point of a low-pressure casting mold

Abstract

This utility model relates to the field of wheel hub casting molds and discloses a top mold cooling and water distribution structure for low-pressure casting molds. It includes a diversion block detachably connected to the outside of the top mold. The diversion block has an inlet hole sealed and connected to the main water channel of the machine, and several water distribution holes communicating with the inlet hole. Each water distribution hole is sealed and connected to a corresponding cooling station on the top mold via a cooling branch pipe. This utility model addresses the problem of complex piping caused by traditional series-connected annular main cooling pipes. Through the design of the diversion block and water distribution holes outside the top mold, the piping structure is simplified, avoiding the space occupied by multiple annular main pipes. The freed-up back cavity space provides ample operating space for inspection and maintenance, avoiding a congested environment that affects timely maintenance and ensuring the stability of mold operation. Furthermore, the freed-up space can be used to add cooling stations to meet diverse cooling needs, reducing defects in castings caused by insufficient cooling. Different diversion block structures are adaptable to different cooling scenarios, demonstrating strong versatility.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub casting molds, and in particular to a cold water distribution structure at the top mold point of a low-pressure casting mold. Background Technology

[0002] Currently, water cooling systems for low-pressure casting molds for aluminum alloy wheels typically include annular water channels within the mold body and point cooling water channels located in the back cavity of the top mold. As casting technology continues to develop towards higher precision and efficiency, the market's requirements for mold cooling processes are becoming increasingly stringent.

[0003] For the top mold of low-pressure molds, the point cooling water channel system of fully water-cooled molds has significant technical defects: the traditional design adopts a structure of ring main pipes connected in series with point cooling pipes. In order to cover all point cooling stations, multiple sets of ring main pipes and branch pipes need to be set up. This not only makes the pipe system structure complex, but also easily causes uneven water flow resistance due to pipe intersections, affecting the uniformity of cooling. In addition, the space of the back cavity of the top mold is limited by the overall structure of the mold. The dense ring main pipes and branch pipes result in high precision requirements for interface docking during assembly, small operating space, low assembly efficiency, and even some pipes cannot be installed as designed. The installation of the mold in the wrong location directly delays the assembly and delivery schedule of the mold. At the same time, the crowded back cavity of the top mold makes it difficult to observe the status of the pipeline during daily inspections. Moreover, the disassembly and maintenance of the pipeline requires the removal of surrounding components first, which seriously affects the timeliness of inspection and maintenance, increases the risk of production line stoppage due to mold cooling failure, and damages the stability of mold operation. In addition, the limited back cavity space cannot accommodate a sufficient number of cooling channels and cooling stations, resulting in insufficient cooling in some areas of the top mold (such as the root of the wheel hub spokes and the inner side of the rim), which is prone to defects such as shrinkage porosity and deformation of the casting, and cannot fully meet the cooling requirements of high-precision casting. Therefore, there is an urgent need for a top mold water circuit design that can simplify the pipeline structure, optimize the utilization of the back cavity space, improve the convenience of assembly and maintenance, and at the same time meet the sufficient cooling requirements. Utility Model Content

[0004] The purpose of this utility model is to address the above-mentioned problems by providing a cold water distribution structure for the top mold point of a low-pressure casting mold. The technical solution adopted is as follows: A low-pressure casting mold top mold spot cooling water distribution structure includes a diversion block detachably connected to the outside of the top mold. The diversion block has a water inlet hole that is sealed and connected to the main water channel of the machine, and a number of water distribution holes that are connected to the water inlet hole. Each water distribution hole is sealed and connected to the corresponding spot cooling station on the top mold through a spot cooling branch pipe.

[0005] Preferably, the diversion block has a cuboid structure, with two horizontal holes parallel to each other in the horizontal direction. The water distribution holes are equally spaced along the length of the horizontal holes, and a vertical hole is vertically connected between the two horizontal holes. One end of the vertical hole is sealed and connected to the water inlet hole, and the other end is connected to the middle of the two horizontal holes respectively.

[0006] Preferably, multiple diversion blocks are connected in parallel with the main water channel of the machine to form a modular water distribution structure.

[0007] Preferably, the two sides of the diversion block are integrally formed with ear plates, and the ear plates are provided with waist-shaped holes, the long diameter of which is 12-16mm and the short diameter is 8-10mm.

[0008] Preferably, the diversion block is a disc-shaped structure, the water inlet is opened at the center of the disc diversion block, the water inlets are distributed in a central radiating pattern and arranged at equal angles along the circumference of the disc, one end of each water inlet is connected to the central water inlet and the other end extends to the outer diameter edge of the disc block; the cooling branch pipe is connected to the outer diameter of the diversion block along the circumference. The beneficial effects of this utility model are as follows: Addressing the problem of complex piping caused by traditional series-connected annular main cooling pipes, this utility model simplifies the piping structure through the design of a diversion block and water distribution holes outside the top mold, avoiding the space occupied by multiple sets of annular main pipes; the freed-up back cavity space provides ample operating space for inspection and maintenance, avoiding a congested environment that affects timely maintenance and ensuring the stability of mold operation; furthermore, the freed-up space can be used to add a point cooling station, which, in conjunction with the diversion block, precisely distributes water to meet diverse cooling needs, reducing defects in castings caused by insufficient cooling. Simultaneously, different diversion blocks are adaptable to different cooling scenarios, exhibiting strong versatility and comprehensively solving the pain points of traditional cooling structures. Attached Figure Description

[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0010] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present invention.

[0011] Figure 2 for Figure 1 A schematic diagram of the planar structure.

[0012] Figure 3 for Figure 2 Top view.

[0013] Figure 4 This is a schematic diagram of the structure of the second embodiment of the present utility model.

[0014] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure.

[0015] In the diagram: 10--Diverter block; 11--Inlet hole; 12--Diverter hole; 13--Cold branch pipe; 14--Horizontal hole; 15--Vertical hole; 16--Ear plate; 17--Oval hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] like Figure 1-5 As shown, a low-pressure casting mold top mold spot cooling water distribution structure includes a diversion block 10 detachably connected to the outside of the top mold (such as the outer wall of the top mold or the machine support). The diversion block 10 has an inlet hole 11 sealed and connected to the main water channel of the machine, and several diversion holes 12 communicating with the inlet hole 11. Each diversion hole 12 is sealed and connected to a corresponding spot cooling station on the top mold via a spot cooling branch pipe 13. In use, the main water channel of the machine supplies cooling water to the inlet hole 11 of the diversion block 10. After entering the interior of the diversion block 10, the cooling water is evenly distributed to each spot cooling branch pipe 13 via the diversion holes 12, and finally precisely delivered to the corresponding spot cooling station through the spot cooling branch pipe 13, achieving point cooling of each area of ​​the top mold.

[0018] This embodiment, by placing the diversion block 10 outside the top mold, allows the assembly and connection of the point cooling pipeline to be completed in an open space, significantly reducing assembly difficulty, improving assembly efficiency, and avoiding assembly obstruction caused by the narrow back cavity space; the annular main pipe structure inside the back cavity of the top mold is eliminated, significantly freeing up back cavity space, providing ample operating space for daily inspection and pipeline maintenance, improving the timeliness of inspection and maintenance, and reducing the risk of mold downtime; the freed back cavity space can be used to add more point cooling stations, meeting the precise cooling needs of multiple areas of the top mold, and reducing defects in castings caused by insufficient cooling; the diversion block 10 is detachably connected to the top mold, facilitating the individual replacement or maintenance of the diversion block 10, reducing overall maintenance costs.

[0019] First embodiment: As the first implementation of the top mold cooling water distribution structure of low-pressure casting mold, the distribution block 10 adopts a cuboid structure. Two horizontal holes 14 are opened in parallel along the horizontal direction inside the distribution block 10. Water distribution holes 12 are opened at equal intervals along the length direction of the horizontal holes 14, and the diameter of each water distribution hole 12 matches the inner diameter of the cooling branch pipe 13. A vertical hole 15 is vertically connected between the two horizontal holes 14. One end of the vertical hole 15 is sealed and connected to the water inlet hole 11, and the other end is connected to the middle position of the two horizontal holes 14 respectively, forming a "one inlet and two horizontal" distribution structure.

[0020] In this embodiment, the horizontal hole 14, vertical hole 15, and water inlet hole 11 can be manufactured by first machining through holes on the block and then sealing the two ends of the through holes. The manufacturing process is simple and the sealing reliability is high. In use, the cooling water of the main water channel of the machine enters the vertical hole 15 through the water inlet hole 11, and then is split from the vertical hole 15 to the two horizontal holes 14. Subsequently, it is evenly distributed to each point cooling branch pipe 13 through the water distribution holes 12 on the horizontal holes 14, and finally delivered to the corresponding point cooling station. In this embodiment, the cuboid structure is adapted to the installation space of the top mold side and the machine support, and the installation flexibility is high; the "one inlet and two horizontal" splitting path shortens the cooling water flow distance, reduces water flow resistance, ensures uniform flow of each water distribution hole 12, and improves cooling consistency; the sealing process effectively avoids the risk of mold corrosion or circuit short circuit caused by cooling water leakage.

[0021] Furthermore, to address the varying cooling requirements of different areas of the top mold (such as the rim area and spoke area), 2-4 cuboid distribution blocks 10 can be installed. Each distribution block 10 corresponds to a point cooling station in one area of ​​the top mold. Multiple distribution blocks 10 are connected in parallel to the main water channel of the machine, forming a modular water distribution structure. The modular design allows for the addition or reduction of the number of distribution blocks 10 according to the cooling requirements of the top mold, adapting to the cooling needs of top molds for different wheel hub specifications, thus offering strong versatility.

[0022] Furthermore, the diversion block 10 has ear plates 16 integrally formed on both sides, and the ear plates 16 have waist-shaped holes 17. Bolts are passed through the waist-shaped holes 17 and fastened to the threaded holes of the outer wall of the top mold or the machine support to achieve stable fixation of the diversion block 10. Preferably, the long diameter of the waist-shaped hole 17 is 12-16mm and the short diameter is 8-10mm, which can accommodate slight deviations in the installation position. Second Embodiment: As a second implementation method, the diversion block 10 has a disc-shaped structure. The water inlet 11 is located at the center of the disc diversion block 10 and is sealed to the main water channel of the machine. The water distribution holes 12 are distributed in a central radiating pattern and are arranged at equal angles along the circumference of the disc, preferably 4-12 in number. One end of each water distribution hole 12 is connected to the central water inlet 11, and the other end extends to the outer diameter edge of the disc block. The cooling branch pipes 13 are connected circumferentially to the outer diameter of the diversion block 10, so that the distance between each cooling branch pipe 13 and the water inlet 11 is consistent, thereby uniformly distributing the water flow of each cooling branch pipe 13, improving the cooling uniformity of each cooling branch pipe 13, and solving the problem of uneven cooling caused by the difference in pipe length in traditional ring main pipes. The above-disclosed embodiments are merely specific examples of this utility model, but this utility model is not limited thereto. For those skilled in the art, any modifications made without departing from the principle of this utility model should be considered as protected by this utility model.

Claims

1. A low pressure casting mold top die point cold water parting structure, characterized by: It includes a diversion block (10) that is detachably connected to the outside of the top mold. The diversion block (10) has a water inlet (11) that is sealed and connected to the main water channel of the machine, and a number of water distribution holes (12) that are connected to the water inlet (11). Each water distribution hole (12) is sealed and connected to the corresponding point cooling station on the top mold through a point cooling branch pipe (13).

2. A low pressure casting mold drag point chill water break structure according to claim 1, characterized in that: The diversion block (10) is a cuboid structure. Two horizontal holes (14) are opened in parallel along the horizontal direction inside the diversion block (10). Water diversion holes (12) are opened at equal intervals along the length of the horizontal holes (14). A vertical hole (15) is vertically connected between the two horizontal holes (14). One end of the vertical hole (15) is sealed and connected to the water inlet hole (11), and the other end is connected to the middle position of the two horizontal holes (14).

3. A low pressure casting mold drag point chill water break structure according to claim 2, characterized in that: Multiple diversion blocks (10) are connected in parallel with the main water channel of the machine to form a modular water distribution structure.

4. The low pressure casting mold drag point chill water break structure of claim 1, wherein: The diversion block (10) has ear plates (16) integrally formed on both sides, and the ear plates (16) have waist-shaped holes (17) with a long diameter of 12-16 mm and a short diameter of 8-10 mm.

5. The low pressure casting mold drag point chill water break structure of claim 1, wherein: The diversion block (10) is a disc-shaped structure. The water inlet (11) is located at the center of the disc diversion block (10). The water distribution holes (12) are distributed in a central radiating pattern and are arranged at equal angles along the circumference of the disc. One end of each water distribution hole (12) is connected to the central water inlet (11), and the other end extends to the outer diameter edge of the disc block. The cooling branch pipe (13) is connected to the outer diameter of the diversion block (10) along the circumference.

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