Inorganic sand core mold water cooling shooting plate

Abstract

An inorganic sand core mold water cooling shooting plate comprises a shooting plate and a plurality of sand shooting nozzles, the shooting plate is provided with a plurality of sand shooting openings, the sand shooting nozzles are installed at the bottom of the shooting plate, and sand shooting cavities of the sand shooting nozzles correspond to the sand shooting openings; the sand shooting nozzle comprises a shell and an inner core, the inner core penetrates in the axial direction to form a sand shooting cavity, the inner core is sleeved with the shell, a water cooling cavity is formed between the shell and the inner core, the shell is provided with a water inlet and a water outlet, and the water inlet and the water outlet are communicated with the water cooling cavity; the plurality of sand shooting nozzles are connected through hoses, and a water inlet of one sand shooting nozzle is connected with a water outlet of another sand shooting nozzle through a hose. The sand shooting nozzle is directly mounted at the bottom of the shooting plate, and the water cooling cavity is formed in the sand shooting nozzle, so that the complicated process that a water cooling channel needs to be milled on the shooting plate in a traditional mode can be avoided, the overall structure of the shooting plate mold is simplified, and the manufacturing cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of water-cooled injection plate technology, and in particular to a water-cooled injection plate for inorganic sand core molds. Background Technology

[0002] With increasingly stringent environmental protection requirements, sand cores made from inorganic resin (water glass) are characterized by being non-aerated and odorless, enabling environmentally friendly green casting. In inorganic processes, temperature control of the sand injection nozzle is a crucial parameter. The nozzle needs to be inserted into the mold to inject sand, and the mold temperature can reach over 150°C. The sand core solidifies by evaporating the water vapor in the water glass at high temperatures. However, if the overall temperature of the injection nozzle is too high, the sand will solidify inside the nozzle, causing blockage and preventing proper sand injection molding.

[0003] To ensure the efficient operation of the sand-shooting nozzle, a water-cooling channel is incorporated for cooling. Traditional sand-shooting plates consist of two flat plates, with water-cooling channels milled into the upper and / or lower plates. The sand-shooting nozzles are then connected in series within these channels for cooling. This type of sand-shooting plate mold is complex to manufacture, costly, and prone to leakage due to improper sealing. Utility Model Content

[0004] In response to the problems raised in the background technology, the purpose of this utility model is to propose a water-cooled shooting plate for inorganic sand core molds, which solves the problems of complex manufacturing, high cost and easy leakage of existing sand shooting plate molds.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A water-cooled injection plate for an inorganic sand core mold includes an injection plate and a plurality of injection nozzles. The injection plate is provided with a plurality of injection ports, and the plurality of injection nozzles are installed at the bottom of the injection plate. The injection chambers of the injection nozzles are correspondingly arranged with the injection ports.

[0007] The sand-shooting nozzle includes an outer shell and an inner core. The inner core extends axially to form the sand-shooting chamber. The outer shell is fitted over the outer shell of the inner core. A water-cooling chamber is provided between the outer shell and the inner core. The outer shell is provided with a water inlet and a water outlet. The water inlet and the water outlet are connected to the water-cooling chamber.

[0008] Several of the sand-jetting nozzles are connected by a hose, and the inlet of one sand-jetting nozzle is connected to the outlet of another sand-jetting nozzle by the hose.

[0009] Preferably, the inner core includes a mounting portion and a core shooter;

[0010] The mounting part is located on the top of the firing core and is used for mounting and connecting with the firing plate. The outer shell is sleeved on the outside of the firing core, and the top of the outer shell is welded to the bottom of the mounting part.

[0011] The area of ​​the horizontal cross-section of the mounting part is greater than the area of ​​the horizontal cross-section of the outer casing.

[0012] Preferably, the bottom of the injection plate is recessed upward to form a mounting cavity, which is used to accommodate the mounting part;

[0013] The mounting part is provided with a pair of mounting holes, and the sand-shooting nozzle is mounted and connected to the shooting plate through the mounting holes by fasteners.

[0014] Preferably, the depth of the upward recess of the mounting cavity is the same as the thickness of the mounting portion.

[0015] Preferably, the outer wall of the core is provided with connecting parts on opposite sides, and the connecting parts are used for welding to the inner wall of the outer shell;

[0016] The two connecting parts divide the water-cooling cavity into an inlet cavity and an outlet cavity. The inlet cavity is correspondingly arranged with the inlet, and the outlet cavity is correspondingly arranged with the outlet. The inlet and outlet are located at one end of the outer shell near the mounting part.

[0017] The end of the connecting part away from the mounting part is provided with an annular connecting part, which is connected to the water inlet chamber and the water outlet chamber respectively.

[0018] Preferably, the inlet and the outlet are each provided with a connector, one end of the connector is welded to the outer shell, and the other end of the connector is installed and connected to the hose.

[0019] Preferably, a nozzle sleeve is provided below the inner core, and the nozzle sleeve is fitted over the outside of the inner core;

[0020] The lower part of the outer wall of the nozzle sleeve is inverted cone shape.

[0021] Preferably, the nozzle sleeve is made of high-temperature resistant rubber.

[0022] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0023] By directly installing the sand injection nozzle at the bottom of the injection plate and providing a water-cooling cavity inside the sand injection nozzle, the complex process of milling water-cooling channels into the injection plate in the traditional method can be avoided, thereby simplifying the overall structure of the injection plate mold and reducing manufacturing costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0025] Figure 2 This is a bottom view of one embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the sand-shooting nozzle of this utility model;

[0027] Figure 4 This is a top view of the sand-shooting nozzle of this utility model;

[0028] Figure 5 yes Figure 4 Sectional view of AA;

[0029] Figure 6 yes Figure 4 Sectional view of BB;

[0030] Figure 7 yes Figure 3 A sectional view of CC.

[0031] The components include: a jetting plate 1, a mounting cavity 11, a jetting nozzle 2, a jetting chamber 20, a housing 21, a water inlet 211, a water outlet 212, an inner core 22, a mounting part 221, a mounting hole 2211, a jetting core 222, a connecting part 2221, an annular connecting part 2222, a water-cooling chamber 23, a water inlet chamber 231, a water outlet chamber 232, a connector 24, a nozzle sleeve 25, and a hose 3. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," and "third" may explicitly or implicitly include one or more of that feature.

[0035] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The following is in conjunction with the appendix Figures 1 to 7 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0037] An inorganic sand core mold water-cooled injection plate includes an injection plate 1 and a plurality of injection nozzles 2. The injection plate 1 is provided with a plurality of injection ports, and the plurality of injection nozzles 2 are installed at the bottom of the injection plate 1. The injection chambers 20 of the injection nozzles 2 are correspondingly arranged with the injection ports.

[0038] The sand-shooting nozzle 2 includes an outer shell 21 and an inner core 22. The inner core 22 extends axially to form the sand-shooting chamber 20. The outer shell 21 is sleeved on the outside of the inner core 22. A water-cooling chamber 23 is provided between the outer shell 21 and the inner core 22. The outer shell 21 is provided with a water inlet 211 and a water outlet 212. The water inlet 211 and the water outlet 212 are connected to the water-cooling chamber 23.

[0039] Several of the sand-shooting nozzles 2 are connected by a hose 3, and the inlet 211 of one sand-shooting nozzle is connected to the outlet 212 of another sand-shooting nozzle by the hose 3.

[0040] By directly installing the sand injection nozzle 2 at the bottom of the injection plate 1, and providing a water-cooling cavity 23 inside the sand injection nozzle 2, the complex process of milling water-cooling channels on the injection plate in the traditional method can be avoided, thereby simplifying the overall structure of the injection plate mold and reducing manufacturing costs.

[0041] The water-cooling cavity 23 is formed between the outer shell 21 and the inner core 22, directly cooling the sand-shooting nozzle 2. This effectively prevents the sand from solidifying prematurely due to high temperatures inside the nozzle 2, ensuring unobstructed flow in the sand-shooting chamber 20 and improving sand-shooting efficiency and molding quality. The water-cooling cavity 23 is integrated inside the sand-shooting nozzle 2, with the inlet 211 and outlet 212 both located on the outer shell 21. The various sand-shooting nozzles 2 are connected in series via flexible hoses 3. This independent modular design makes maintenance and replacement of individual sand-shooting nozzles 2 more convenient, eliminating the need to disassemble the entire injection plate, thus improving maintenance efficiency and reducing maintenance costs. Simultaneously, the water-cooling channel formed by the sand-shooting nozzle 2 and the flexible hoses 3 is independent of the injection plate 1, making the water-cooling channel more reliable and preventing leakage problems caused by improper sealing inside the combined injection plate.

[0042] Furthermore, the inner core 22 includes a mounting portion 221 and a core ejector 222;

[0043] The mounting part 221 is disposed on the top of the shooting core 222, and the mounting part 221 is used for mounting and connecting with the shooting plate 1. The outer shell 21 is sleeved on the outside of the shooting core 222, and the top of the outer shell 21 is welded to the bottom of the mounting part 221.

[0044] The area of ​​the horizontal cross-section of the mounting part 221 is larger than the area of ​​the horizontal cross-section of the outer casing 21.

[0045] By dividing the inner core 22 into a mounting section 221 and an ejector core 222, and specifically designing the mounting section 221 for connection with the ejector plate 1, the structural strength and stability of the connection between the nozzle 2 and the ejector plate 1 can be ensured. This helps prevent performance degradation or failure due to loosening or damage during use.

[0046] The outer shell 21 is specifically fitted onto the outside of the ejector core 222, and the top of the outer shell 21 is welded to the bottom of the mounting part 221. This connection method is generally more robust and reliable than other connection methods (such as bolt connection, adhesive connection, etc.). Welding can provide stronger bonding force and better sealing, thereby extending the service life of the ejector nozzle 2.

[0047] To further explain, when the outer shell 21 is fitted over the outside of the ejector core 222, the horizontal cross-sectional area of ​​the mounting portion 221 is larger than that of the outer shell 21. This design can more effectively disperse and conduct heat. When the ejector core 222 generates heat during operation, the larger mounting portion 221 can provide a larger heat dissipation area, which helps the heat to dissipate through the outer shell 21 more quickly, thereby improving cooling efficiency. On the other hand, the larger mounting portion 221 is more convenient to install with the ejector plate 1.

[0048] Furthermore, the bottom of the shooting plate 1 is recessed upward to provide a mounting cavity 11, which is used to accommodate the mounting part 221;

[0049] The mounting part 221 is provided with a pair of mounting holes 2211, and the sand-shooting nozzle 2 is installed and connected to the shooting plate 1 by fasteners passing through the mounting holes 2211.

[0050] The mounting cavity 11 provides a precise positioning space for the mounting part 221, making it easier to align the sand-shooting nozzle 2 with the spray plate 1 during installation, thereby improving installation accuracy. At the same time, the presence of the mounting cavity 11 also increases the contact area between the sand-shooting nozzle 2 and the spray plate 1, further improving the stability of the connection.

[0051] The pre-set mounting cavity 11 allows the mounting part 221 to be directly embedded therein without any additional positioning or adjustment steps. In addition, the sand-shooting nozzle is fixedly connected to the shooting plate by fasteners passing through the mounting hole 2211. This installation method is simple and quick, reducing installation difficulty and labor time.

[0052] Furthermore, the depth of the upward recess of the mounting cavity 11 is the same as the thickness of the mounting portion 221.

[0053] When the depth of the mounting cavity 11 perfectly matches the thickness of the mounting part 221, it ensures that the mounting part 221 is fully embedded in the mounting cavity 11, achieving a tight fit. This tight fit helps reduce the gap between the jet nozzle 2 and the jet plate 1, improving overall stability and durability.

[0054] Furthermore, the outer wall of the core 222 is provided with connecting portions 2221 on opposite sides, and the connecting portions 2221 are used for welding connection with the inner wall of the outer shell 21;

[0055] The two connecting parts 2221 divide the water-cooling cavity 23 into a water inlet cavity 231 and a water outlet cavity 232. The water inlet cavity 231 is correspondingly arranged with the water inlet 211, and the water outlet cavity 232 is correspondingly arranged with the water outlet 212. The water inlet 211 and the water outlet 212 are located at one end of the outer shell 21 near the mounting part 221.

[0056] The end of the connecting part 2221 away from the mounting part 221 is provided with an annular connecting part 2222, which is connected to the water inlet chamber 231 and the water outlet chamber 232 respectively.

[0057] The connection between the connecting part 2221 and the inner wall of the outer shell 21 is welded together, which helps to enhance the connection strength between the core 222 and the outer shell 21 and improve the structural stability of the entire water-cooled firing plate.

[0058] By dividing the water-cooling chamber 23 into an inlet chamber 231 and an outlet chamber 232, corresponding to the inlet 211 and outlet 212 respectively, it can be ensured that cooling water enters from the inlet 211, flows through the inlet chamber 231, enters the outlet chamber 232 through the annular connecting portion 2222 located at the bottom, and finally flows out from the outlet 212. This helps optimize the water flow path and improve cooling efficiency. Since the inlet chamber 231 and the outlet chamber 232 are separated and correspond to the inlet 211 and outlet 212 respectively, the cooling water can flow more evenly over the outside of the core 222, reducing the risk of local overheating and improving the uniformity of cooling.

[0059] Furthermore, the inlet 211 and the outlet 212 are each provided with a connector 24. One end of the connector 24 is welded to the outer shell 21, and the other end of the connector 24 is installed and connected to the hose 3.

[0060] The design of connector 24 makes the connection between the inlet 211 and outlet 212 and the hose 3 more robust and reliable. Through welding, connector 24 forms a high-strength connection with the housing 21, which can withstand large water pressure and temperature changes, while preventing the leakage of cooling medium.

[0061] Furthermore, a nozzle sleeve 25 is provided below the inner core 22, and the nozzle sleeve 25 is fitted over the outside of the inner core 22;

[0062] The lower part of the outer wall of the nozzle sleeve 25 is inverted cone-shaped.

[0063] The inverted conical nozzle sleeve 25 design increases its contact area with the mold or other contact parts, making the joint tighter, thereby dispersing wear and impact forces, enhancing sealing performance, helping to prevent leakage of core material during sand injection, ensuring normal operation of the mold and quality of the casting.

[0064] Furthermore, the nozzle sleeve 25 is made of high-temperature resistant rubber.

[0065] High-temperature resistant rubber possesses excellent high-temperature resistance, enabling it to withstand prolonged operation in high-temperature environments. In water-cooled injection plates for inorganic sand core molds, the nozzle sleeve 25 frequently comes into contact with the high-temperature sand core material. Therefore, using high-temperature resistant rubber ensures that the nozzle sleeve will not deform, soften, or be damaged at high temperatures, thus maintaining its stable performance and lifespan.

[0066] High-temperature resistant rubber possesses excellent elasticity and sealing properties, enabling it to tightly conform to molds and other connecting components, preventing leakage of the core material during sandblasting. Simultaneously, its high wear resistance allows it to withstand the erosion and abrasion of the nozzle sleeve by the core material, extending the nozzle sleeve's service life.

[0067] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A water-cooled injection plate for an inorganic sand core mold, characterized in that: It includes a spray plate and several spray nozzles. The spray plate is provided with several spray ports, and several spray nozzles are installed at the bottom of the spray plate. The spray chambers of the spray nozzles are arranged corresponding to the spray ports. The sand-shooting nozzle includes an outer shell and an inner core. The inner core extends axially to form the sand-shooting chamber. The outer shell is fitted over the outer shell of the inner core. A water-cooling chamber is provided between the outer shell and the inner core. The outer shell is provided with a water inlet and a water outlet. The water inlet and the water outlet are connected to the water-cooling chamber. Several of the sand-jetting nozzles are connected by a hose, and the inlet of one sand-jetting nozzle is connected to the outlet of another sand-jetting nozzle by the hose.

2. The water-cooled injection plate for an inorganic sand core mold according to claim 1, characterized in that: The inner core includes a mounting part and a core ejector; The mounting part is located on the top of the firing core and is used for mounting and connecting with the firing plate. The outer shell is sleeved on the outside of the firing core, and the top of the outer shell is welded to the bottom of the mounting part. The area of ​​the horizontal cross-section of the mounting part is greater than the area of ​​the horizontal cross-section of the outer casing.

3. The water-cooled injection plate for an inorganic sand core mold according to claim 2, characterized in that: The bottom of the injection plate is recessed upward to form a mounting cavity, which is used to accommodate the mounting part; The mounting part is provided with a pair of mounting holes, and the sand-shooting nozzle is mounted and connected to the shooting plate through the mounting holes by fasteners.

4. The water-cooled injection plate for an inorganic sand core mold according to claim 3, characterized in that: The depth of the upward recess in the mounting cavity is the same as the thickness of the mounting portion.

5. The water-cooled injection plate for an inorganic sand core mold according to claim 4, characterized in that: The outer wall of the core is provided with connecting parts on opposite sides, and the connecting parts are used to weld to the inner wall of the outer shell; The two connecting parts divide the water-cooling cavity into an inlet cavity and an outlet cavity. The inlet cavity is correspondingly arranged with the inlet, and the outlet cavity is correspondingly arranged with the outlet. The inlet and outlet are located at one end of the outer shell near the mounting part. The end of the connecting part away from the mounting part is provided with an annular connecting part, which is connected to the water inlet chamber and the water outlet chamber respectively.

6. The water-cooled injection plate for an inorganic sand core mold according to claim 5, characterized in that: The inlet and outlet are each equipped with a connector. One end of the connector is welded to the outer shell, and the other end of the connector is installed and connected to the hose.

7. The water-cooled injection plate for an inorganic sand core mold according to claim 6, characterized in that: A nozzle sleeve is provided below the inner core, and the nozzle sleeve is fitted over the outside of the inner core; The lower part of the outer wall of the nozzle sleeve is inverted cone shape.

8. The water-cooled injection plate for an inorganic sand core mold according to claim 7, characterized in that: The nozzle sleeve is made of high-temperature resistant rubber.

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